Meyer Sound Car Speaker MM 10 User Manual

INDUSTRIAL SERIES  
OPERATING INSTRUCTIONS  
MM-10 Miniature Subwoofer  
MPS-488HP Power Supply  
Keep these important operating instructions.  
Download from Www.Somanuals.com. All Manuals Search And Download.  
SYMBOLS USED  
These symbols indicate important safety or operating features in this booklet and on the chassis:  
!
Dangerous voltages: risk of  
electric shock  
Important operating instructions  
Frame or chassis  
Masse, châssis  
Protective earth ground  
Terre de protection  
Masse Schutzleiter  
Tierra proteccionista  
Pour indiquer les risques  
résultant de tensions dangereuses  
Pour indequer important  
instructions  
Wichtige Betriebsanweisung oder  
Gebrauchsanleitung  
Warnung vor gefährlicher  
elektrischer Spannung  
Rahmen oder Gehäuse  
Armadura o chassis  
Para indicar voltajes peligrosos  
Instrucciones importantes de  
funcionamiento y/o manteniento  
IMPORTANT SAFETY INSTRUCTIONS  
1. Read these instructions.  
2. Keep these instructions.  
3. Heed all warnings.  
11.Only use attachments/accessories specified by Meyer  
Sound.  
12.If applicable, use only with the caster rails or rigging  
specified by Meyer Sound, or sold with the loudspeaker.  
Handles are for carrying only.  
4. Follow all instructions.  
5. Do not use this loudspeaker near water.  
6. Clean only with dry cloth.  
CAUTION: Rigging should only be done by  
experienced professionals.  
!
7. Do not block any ventilation openings. Install in accor-  
dance with Meyer Sound’s installation instructions.  
13.Unplug this loudspeaker during lightning storms or when  
unused for long periods of time.  
8. Do not install near any heat sources such as radiators,  
heat registers, stoves, or other apparatus that produce  
heat.  
14.Disconnect the mains plug before disconnecting the  
power cord from the loudspeaker.  
15.Refer all servicing to qualified service personnel. Servic-  
ing is required when the loudspeaker has been damaged  
in any way, such as when the power-supply cord or plug  
has been damaged; liquid has been spilled or objects  
have fallen into the loudspeaker; rain or moisture has  
entered the loudspeaker; the loudspeaker has been  
dropped; or when for undetermined reasons the loud-  
speaker does not operate normally.  
9. Do not defeat the safety purpose of the grounding-type  
plug. A grounding type plug has two blades and a third  
grounding prong. The third prong is provided for your  
safety. If the provided plug does not fit into your outlet,  
consult an electrician for replacement of the obsolete  
outlet.  
10.Protect the power cord from being walked on or pinched,  
particularly at plugs, convenience receptacles, and the  
point where they exit from the loudspeaker. The AC  
mains plug or appliance coupler shall remain readily  
accessible for operation.  
CAUTION: To reduce the risk of electric shock,  
do not expose this loudspeaker to rain or mois-  
!
ture. Do not install the loudspeaker in wet or humid  
locations without using weather protection equip-  
ment from Meyer Sound.  
iii  
Download from Www.Somanuals.com. All Manuals Search And Download.  
SAFETY SUMMARY  
English  
Ne pas installer l’haut-parleur dans un  
endroit où il y a de l’eau ou une humid-  
ité excessive.  
Um ein Überhitzen dem Lautsprecher  
zu verhindern, das Gerät vor direkter  
Sonneneinstrahlung fernhalten und  
nicht in der Nähe von wärmeabstrahl-  
enden  
To reduce the risk of electric shock, dis-  
connect the loudspeaker from the AC  
mains before installing audio cable.  
Reconnect the power cord only after  
making all signal connections.  
Ne pas laisser de l’eau ou tout objet  
pénétrer dans l’haut-parleur. Ne pas  
placer de r´cipients contenant un liquide  
sur cet appareil, ni à proximité de celui-  
ci.  
Haushaltsgeräten (z.B. Heizgerät oder  
Herd) aufstellen.  
Connect the loudspeaker to a two-pole,  
three-wire grounding mains receptacle.  
The receptacle must be connected to a  
fuse or circuit breaker. Connection to  
any other type of receptacle poses a  
shock hazard and may violate local  
electrical codes.  
Im Inneren diesem Lautsprecher herr-  
schen potentiell gefährliche Spannun-  
gen. Nicht versuchen, das Gerät zu  
öffnen. Es enthält keine vom Benutzer  
reparierbaren Teile. Reparaturen dürfen  
nur von ausgebildetem Kundenienst-  
personal durchgeführt werden.  
Pour éviter une surchauffe de l’haut-  
parleur, conserver-la à l’abri du soleil.  
Ne pas installer à proximité d’appareils  
dégageant de la chaleur tels que radia-  
teurs ou appareils de chauffage.  
Ce haut-parleur contient des circuits  
haute tension présentant un danger. Ne  
jamais essayer de le démonter. Il n’y a  
aucun composant qui puisse être  
réparé par l’utilisateur. Toutes les répa-  
rations doivent être effectuées par du  
personnel qualifié et agréé par le con-  
structeur.  
Do not install the loudspeaker in wet or  
humid locations without using weather  
protection equipment from Meyer  
Sound.  
Español  
Para reducir el riesgo de descarga eléc-  
Do not allow water or any foreign object  
to get inside the loudspeaker. Do not  
put objects containing liquid on or near  
the unit.  
trica, desconecte de la red de voltaje el  
altoparlante antes de instalar el cable  
de señal de audio. Vuelva a conectar la  
alimentacion de voltaje una vez efectu-  
adas todas las interconexiones de  
señalizacion de audio.  
To reduce the risk of overheating the  
loudspeaker, avoid exposing it to direct  
sunlight. Do not install the unit near  
heat-emitting appliances, such as a  
room heater or stove.  
Deutsch  
Um die Gefahr eines elektrischen  
Schlages auf ein Minimum zu  
Conecte el altoparlante a un tomacorri-  
ente bipolar y trifilar con neutro de  
puesta a tierra. El tomacorriente debe  
estar conectado a la protección de deri-  
vación apropiada (ya sea un fusible o un  
disyuntor). La conexión a cualquier otro  
tipo de tomacorriente puede constituir  
peligro de descarga eléctrica y violar los  
códigos eléctricos locales.  
reduzieren, den Lautsprecher vom  
Stromnetz trennen, bevor ggf. ein  
Audio-Schnittstellensignalkabel ange-  
schlossen wird. Das Netzkabel erst  
nach Herstellung aller Signalverbindun-  
gen wieder einstecken.  
This loudspeaker contains potentially  
hazardous voltages. Do not attempt to  
disassemble the unit. The unit contains  
no user-serviceable parts. Repairs  
should be performed only by factory-  
trained service personnel.  
Der Lautsprecher an eine geerdete  
zweipolige Dreiphasen-Netzsteckdose  
anschließen. Die Steckdose muß mit  
einem geeigneten Abzweigschutz  
(Sicherung oder Leistungsschalter) ver-  
bunden sein. Der Anschluß der unter-  
brechungsfreien Stromversorgung an  
einen anderen Steckdosentyp kann zu  
Stromschlägen führen und gegen die  
örtlichen Vorschriften verstoßen.  
No instale el altoparlante en lugares  
donde haya agua o humedad excesiva.  
Français  
No deje que en el altoparlante entre  
agua ni ningún objeto extraño. No  
ponga objetos con líquidos encima de  
la unidad ni cerca de ella.  
Pour réduire le risque d’électrocution,  
débrancher la prise principale de l’haut-  
parleur, avant d’installer le câble d’inter-  
face allant à l’audio. Ne rebrancher le  
bloc d’alimentation qu’après avoir  
effectué toutes les connections.  
Para reducir el riesgo de sobrecalen-  
tamiento, no exponga la unidad a los  
rayos directos del sol ni la instale cerca  
de artefactos que emiten calor, como  
estufas o cocinas.  
Branchez l’haut-parleur dans une prise  
de courant à 3 dérivations (deux pôles  
et la terre). Cette prise doit être munie  
d’une protection adéquate (fusible ou  
coupe-circuit). Le branchement dans  
tout autre genre de prise pourrait  
entraîner un risque d’électrocution et  
peut constituer une infraction à la régle-  
mentation locale concernant les instal-  
lations électriques.  
Der Lautsprecher nicht an einem Ort  
aufstellen, an dem sie mit Wasser oder  
übermäßig hoher Luftfeuchtigkeit in  
Berührung kommen könnte.  
Este altoparlante contiene niveles de  
voltaje peligrosos en potencia. No  
intente desarmar la unidad, pues no  
contiene piezas que puedan ser repar-  
das por el usuario. Las reparaciones  
deben efectuarse únicamente por parte  
del personal de mantenimiento capaci-  
tado en la fábrica.  
Darauf achten, daß weder Wasser noch  
Fremdkörper in das Innere den  
Lautsprecher eindringen. Keine  
Objekte, die Flüssigkeit enthalten, auf  
oder neben die unterbrechungsfreie  
Stromversorgung stellen.  
iv  
Download from Www.Somanuals.com. All Manuals Search And Download.  
CONTENTS  
v
Download from Www.Somanuals.com. All Manuals Search And Download.  
CHAPTER 1: INTRODUCTION  
HOW TO USE THIS MANUAL  
THE MM-10 MINIATURE SUBWOOFER  
Make sure to read these operating instructions in their  
entirety before configuring a loudspeaker system with  
MM-10s. In particular, pay close attention to material related  
to safety issues.  
The MM-10 miniature subwoofer delivers low frequency for  
applications that require excellent audio quality from a com-  
pact system. Designed primarily as a companion to Meyer  
Sound's MM-4XP miniature loudspeaker, as well as the  
UP-4XP ultracompact loudspeaker, the MM-10 allows sys-  
tem designers to create full-range systems where space lim-  
itations are a concern.  
As you read these operating instructions, you will encounter  
the following icons for notes, tips, and cautions:  
NOTE: A note identifies an important or useful  
piece of information relating to the topic under  
discussion.  
TIP: A tip offers a helpful tip relevant to the  
topic at hand.  
CAUTION: A caution gives notice that an  
action may have serious consequences and  
!
could cause harm to equipment or personnel, or  
could cause delays or other problems.  
MM-10 Miniature Subwoofer  
Information and specifications are subject to change.  
Updates and supplementary information are available on the  
Meyer Sound® website:  
The MM-10 features an operating frequency range of 33 Hz  
to 228 Hz with a conservatively rated maximum peak SPL of  
123 dB. The MM-10 bass reflex cabinet houses a single 10-  
inch driver and a single-channel power amplifier complete  
with onboard processing, including a crossover, driver pro-  
tection, and frequency and phase correction. The built-in  
crossover accepts full-range signals, facilitating basic daisy-  
chaining for signal distribution, eliminating the need for  
external crossovers in small setups.  
Meyer Sound Technical Support is available at:  
Tel: +1 510 486.1166  
Fax: +1 510 486.8356  
The MM-10 subwoofer is available from the factory in three  
models — the MM-10XP, MM-10AC, and MM-10ACX —  
each offering different internal configurations and audio and  
power connectors (which cannot be upgraded).  
7
Download from Www.Somanuals.com. All Manuals Search And Download.  
     
CHAPTER 1: INTRODUCTION  
The MM-10XP Subwoofer  
The MM-10ACX Subwoofer  
The MM-10XP is powered by an external 48 V DC power  
supply, eliminating the need for wiring conduits while still  
preserving the advantages of self-powered loudspeaker  
systems. The unit's onboard amplifier and signal-processing  
circuits were designed to store DC power and tolerate volt-  
age drops, thereby accommodating light-gauge cables and  
lengthy cable runs. The MM-10XP is available with either a  
Phoenix™ 5-pin male or sealed SwitchCraft® EN3™ male  
connector for receiving balanced audio and DC power. The  
EN3 connector is ideal for outdoor, all-weather use.  
The MM-10ACX model includes onboard DC power and  
audio routing for driving a pair of MM-4XP miniature loud-  
speakers, or a single UP-4XP ultracompact loudspeaker,  
effectively placing the MM-10ACX at the heart of an  
extremely capable compact, full-range loudspeaker system.  
Three XLR female inputs are included for receiving audio for  
the subwoofer and two satellite loudspeakers. The  
MM-10ACX is available with either Phoenix 5-Pin male or EN3  
5-pin female satellite outputs. A two-channel stereo signal  
canbepatchedtothesatelliteinputsandsummedandrouted  
to the subwoofer if necessary.  
The MPS-488HP External Power Supply  
MM-10XPs require an MPS-488HP external power supply.  
The single-space 19-inch rack unit receives balanced audio  
from its XLR female inputs and routes the audio, along with  
48 V of DC power, to its channel outputs. The channel out-  
puts — equipped with either Phoenix 5-pin male connectors  
or EN3 5-pin female connectors — can deliver DC power to  
up to eight MM-10XP subwoofers.  
MM-10 OPTIONS  
Additional options for the MM-10 include the MUB-MM10  
U-bracket for mounting the subwoofer on ceilings and walls;  
weather protection, complete with a rain hood, for outdoor  
all-weather use; and custom color finishes for installations  
and applications with specific cosmetic requirements.  
MPS-488HP Power Supply  
Cable lengths up to 150 feet for DC power are possible  
when using 18-AWG wire, with just 1 dB of loss in peak  
SPL. Longer cable runs are possible for moderate applica-  
tions that don't drive the subwoofers to maximum output, or  
for installations with heavier wire gauges.  
The use of composite multiconductor cables (such as  
Belden® 1502) allows a single cable to carry both DC power  
and balanced audio to the MM-10XPs.  
The MM-10AC Subwoofer  
MM-10 with MUB-MM10 U-Bracket  
The MM-10AC is ideal for fixed installations and portable  
applications where AC power is readily available to power  
the unit. The MM-10AC includes an internal power supply  
and locking PowerCon connectors for AC input and AC loop  
output (for powering additional MM-10AC subwoofers). The  
MM-10AC receives audio from an XLR female input, and  
also includes an XLR male loop output for daisy-chaining  
audio signals.  
8
Download from Www.Somanuals.com. All Manuals Search And Download.  
 
CHAPTER 2: THE MM-10XP SUBWOOFER  
The MM-10XP is powered by an external 48 V DC power  
THE MM-10XP INPUT CONNECTOR  
supply, eliminating the need for wiring conduits while still  
preserving the advantages of self-powered loudspeaker  
systems. The unit's onboard amplifier and signal-processing  
circuits were designed to store DC power and tolerate volt-  
age drops, thereby accommodating light-gauge cables and  
lengthy cable runs.  
The MM-10XP subwoofer is available with either a Phoenix  
5-pin male or SwitchCraft EN3 5-pin male connector for  
receiving DC power and balanced audio. The EN3 connec-  
tor is ideal for outdoor, all-weather use. The connector’s five  
pins include two for DC power (negative and positive) and  
three for balanced audio (shield, negative, and positive).  
These pins are clearly labeled on the MM-10XP rear panel.  
To function properly, the MM-10XP requires 48 V of DC  
power.  
MM-10XP with Phoenix 5-Pin Male Connector  
MM-10XP Rear Panel, Shown with Phoenix Connector  
MM-10XP with EN3 5-Pin Male Connector  
Depending on the subwoofer’s connector, the MM-10XP  
ships with either a single Phoenix cable connector or an  
EN3-to-pigtail cable for constructing loudspeaker cables.  
NOTE: The pin outputs for the MM-10XP EN3  
connector is identical to that of the MM-4XP.  
However, the MM-10XP EN3 connector has been  
rotated to accommodate the unit’s internal connec-  
tions.  
9
Download from Www.Somanuals.com. All Manuals Search And Download.  
   
CHAPTER 2: THE MM-10XP SUBWOOFER  
CAUTION: If the Limit LED turns red and stays  
solid red after powering up and the audio is  
THE MM-10XP INPUT POLARITY SWITCH  
!
The Input Polarity switch swaps the polarity of the audio  
source signal, which is sometimes necessary to acoustically  
align the subwoofer with other loudspeakers in the system.  
When the switch is in the up (non-inverting) position, the  
positive audio pin (+) is hot relative to the negative audio  
pin (–), resulting in a positive pressure wave when a positive  
signal is applied to the positive pin. When the switch is in the  
down (inverting) position, the negative audio pin (–) is hot  
relative to the positive audio pin (+), resulting in a positive  
pressure wave when a positive signal is applied to the nega-  
tive pin.  
muted, the subwoofer has encountered a failure and  
may need to be serviced. Contact Meyer Sound  
Technical Support.  
CAUTION: If the Limit LED turns solid red and  
the MM-10XP continues to output audio,  
!
though at reduced levels, the subwoofer’s voltage  
may have dropped below 25 V DC. When these con-  
ditions are encountered, operation of the subwoofer  
should cease and its power supply and cabling  
should be verified.  
Limiting (Yellow)  
Limiting activity is indicated when the Limit LED turns yel-  
low. When engaged, the limiter protects the subwoofer’s  
driver and prevents signal peaks from causing excessive  
distortion in the subwoofer’s amplifier, thereby preserving  
headroom and maintaining smooth frequency responses at  
high levels. When the level returns to normal, below the lim-  
iter’s threshold, the LED turns green and limiting ceases.  
MM-10XP Input Polarity Switch  
NOTE: The text for the Input Polarity switch on  
the MM-10XP rear panel shows Pin 2 and  
Pin 3, which is the convention used for the MM-10AC  
and MM-10ACX models. However, the MM-10XP  
Input Polarity switch actually reverses the polarity for  
Pin 4 and Pin 5 of its input connector.  
The MM-10XP performs within its acoustical specifications  
at normal temperatures when the Limit LED is green, or if the  
LED turns yellow for two seconds or less and then returns to  
green for at least one second. If the LED remains yellow for  
longer than three seconds, the subwoofer enters hard limit-  
ing where:  
Increases to the input level have no effect.  
THE MM-10XP LIMIT LED  
The MM-10XP has a three-color Limit LED on its rear panel  
that changes color to indicate the subwoofer’s status.  
Distortion increases due to clipping and nonlinear driver  
operation.  
The drivers are subjected to excessive heat and excur-  
sion, which will compromise their life span and may  
eventually lead to damage over time.  
CAUTION: The Limit LED turns yellow when  
the subwoofer’s signal rises 2 dB above the  
!
limiting threshold, and indicates a safe, optimum level  
has been exceeded. If the MM-10XP subwoofers in a  
system begin to limit before reaching the desired  
SPL, consider adding more subwoofers to the sys-  
tem to achieve the desired SPL without exposing the  
subwoofers to excessive levels and possible over-  
heating.  
MM-10XP Limit LED  
Powering On (Green)  
When powering up the MM-10XP subwoofer, the following  
startup events occur and are indicated by the Limit LED:  
1. The LED flashes green and then yellow during power up.  
2. The LED turns solid green indicating the subwoofer is  
ready to reproduce audio.  
10  
Download from Www.Somanuals.com. All Manuals Search And Download.  
   
MM-10 OPERATING INSTRUCTIONS  
MM-10XP Temperature and Limiting  
Cable Lengths and Cable Gauges for  
MM-10XPs  
The Limit LED turns solid yellow when its heat sink tempera-  
ture reaches 65° C (145° F), indicating the unit is reaching its  
maximum heat dissipation and a reduction in SPL is recom-  
mended. While the MM-10XP will continue to operate while  
the LED is yellow, the limiter threshold is lowered to a safe  
level (causing the output level to be lowered by 6 dB) to pre-  
vent the subwoofer from overheating. When the temperature  
of the heat sink cools to 50°C (122°F), the LED changes  
from yellow to green and the limiter threshold returns to nor-  
mal.  
When connecting an MM-10XP to an MPS-488HP channel  
output, you can use cable lengths of up to 150 feet with only  
1 dB of peak SPL loss using 18 AWG wire. Longer cable  
lengths are possible with heavier wire gauges (see Table 1  
and Table 2).  
Table 1: MM-10XP Loudspeaker Cable Lengths (AWG)  
Cable Gauge  
Resistance  
Approximate  
Max. Length  
(Ω/ft)  
12 AWG  
14 AWG  
16 AWG  
18 AWG  
20 AWG  
0.0016  
0.00253  
0.00402  
0.00636  
0.01008  
600 ft  
375 ft  
237 ft  
150 ft  
87 ft  
Clipping (Red)  
The Limit LED flashes red when its input signal causes the  
amplifier to overload. If the LED flashes red continuously, the  
subwoofer is severely overloaded and a reduction in the  
input level is recommended.  
Table 2: MM-10XP Loudspeaker Cable Lengths (European)  
CAUTION: If the Limit LED turns solid red and  
the subwoofer continues to output audio,  
Cable Gauge  
Resistance  
Approximate  
Max. Length  
!
(Ω/m)  
though at reduced levels, the subwoofer’s voltage  
may have dropped below 25 V DC. When these con-  
ditions are encountered, operation of the subwoofer  
should cease and its power supply and cabling  
should be verified.  
2
2.50 mm  
0.0052  
0.01076  
0.02087  
0.03307  
157 m  
87 m  
45 m  
27 m  
2
1.50 mm  
2
1.00 mm  
2
0.75 mm  
NOTE: When connecting an MM-10XP to an  
MPS-488HP channel output, the total cable  
resistance should not exceed 2 ohms.  
MM-10XP CURRENT DRAW AND CABLE  
REQUIREMENTS  
Each MM-10XP subwoofer draws a maximum current of  
3.31 A average and 3.45 A peak from the 48 V DC output of  
the MPS-488HP. The current draw for the MM-10XP is  
dynamic and fluctuates as operating levels change. The  
cabling between the MM-10XP and the MPS-488HP adds  
resistance and hence causes a voltage drop at the sub-  
woofer. Because lower DC voltages compromise amplifier  
performance (peak SPL), and in some cases frequency  
response, cable resistance should be kept to a minimum.  
Calculating the Maximum Cable Length  
The maximum cable length for an MM-10XP can be calcu-  
lated with the following formula:  
maximum length = 2 ohms / 2 * cable resistance  
For example, the maximum length of an 18 AWG cable with  
a resistance of 0.00636 is 157.2 feet (2 / 2 * 0.00636).  
NOTE: For long cable runs, you can use a large  
cable gauge for DC power and a separate bal-  
anced audio cable for audio.  
11  
Download from Www.Somanuals.com. All Manuals Search And Download.  
     
CHAPTER 2: THE MM-10XP SUBWOOFER  
WIRING MM-10XP LOUDSPEAKER CABLES  
WITH BELDEN 1502 CABLE  
When wiring MM-10XP loudspeaker cables with Belden  
1502 or an equivalent cable, use the conventions in Table 3.  
The red and black wires in the Belden 1502 cable have a  
thicker gauge than the other three wires and should be used  
for DC power. The blue, white, and shield wires are shielded  
together and should be used for audio.  
Red: DC power (+)  
Black: DC power (–)  
White: audio (+)  
Blue: audio (–)  
Audio shield  
Belden 1502 Composite Cable  
Table 3: Wiring MM-10XP Loudspeaker Cables with Belden 1502  
Wire  
Red  
Gauge  
Gauge  
18 AWG  
18 AWG  
22 AWG  
22 AWG  
24 AWG  
DC power, positive (+)  
DC power, negative (–)  
Balanced audio, positive (+)  
Balanced audio, negative (–)  
Balanced audio, shield  
Black  
White  
Blue  
Shield  
Both ends of the loudspeaker cable should be wired so that  
the pins in the MM-10XP input connector align with those in  
the MPS-488HP channel output connector (see “Channel  
Wiring EN3-to-Pigtail Cables  
MM-10XPs equipped with EN3 connectors are shipped with  
one 10-foot EN3 5-pin female-to-pigtail cable. The EN3 end  
of the cable connects directly to the MM-10XP input con-  
nector. The pigtail end of the cable can be equipped with  
either an EN3 5-pin male connector for connecting to the  
MPS-488HPe power supply, or a Phoenix 5-pin female con-  
nector for connecting to the MPS-488HPp power supply.  
The pigtail can also be spliced to a longer loudspeaker cable  
or to a junction box. The included EN3-to-pigtail cable uses  
a multiconductor cable, which can be wired for both DC  
power and balanced audio. The EN3-to-pigtail cable is avail-  
able in plenum or regular (non-plenum) versions.  
NOTE: For a complete list of cables and cable  
connectors available from Meyer Sound that  
can be used with the MM-10XP subwoofer and  
MPS-488HP power supply, see Appendix A, “MM-10  
12  
Download from Www.Somanuals.com. All Manuals Search And Download.  
 
CHAPTER 3: POWERING MM-10XP SUBWOOFERS WITH THE MPS-488HP  
The MPS-488HP power supply delivers DC power and bal-  
THE MPS-488HP FRONT PANEL  
anced audio to Meyer Sound loudspeakers that require a  
The MPS-488HP front panel includes a power switch and  
48 V DC external power supply. The MPS-488HP is a multi-  
LEDs for monitoring each loudspeaker channel.  
channel, switched-mode, regulated power supply that occu-  
pies one space in a standard 19-inch rack. The MPS-488HP  
can power up to eight MM-10XP subwoofers.  
MPS-488HPp Power Supply Front Panel  
AC Power  
The MPS-488HP is powered on and off with the AC Power  
switch.  
Voltage and Load Current LEDs (1–8)  
The Voltage and Load Current LEDs are useful for verifying  
whether each channel output has voltage and whether the  
connected loudspeakers are receiving DC power and audio.  
MPS-488HP Channel LEDs  
Voltage LEDs (1–8)  
The blue Voltage LEDs indicate whether voltage is present  
for each channel output. These LEDs should be lit when the  
MPS-488HP is powered on. The MPS-488HP’s intelligent  
circuit protection shields connected loudspeakers from  
surges and shorts. The blue Voltage LEDs flash on and off  
when a surge or short is encountered. If a channel’s Voltage  
LED flashes on and off, you should power down the  
MPS-488HP and inspect the cabling for that channel.  
MPS-488HPp with Eight MM-10XPs  
NOTE: The MPS-488HP power supply is avail-  
Load Current LEDs (1–8)  
able in two models: the MPS-488HPp, which is  
The green Load Current LEDs indicate whether a loud-  
equipped with Phoenix 5-pin male output connec-  
speaker is connected to the channel and receiving power.  
tors, and the MPS-488HPe, which is equipped with  
As a channel’s audio signal increases, its LED glows  
EN3 5-pin female output connectors.  
brighter. If an LED is not lit, check that the channel’s Voltage  
LED is lit and verify the cable connection to the loudspeaker.  
13  
Download from Www.Somanuals.com. All Manuals Search And Download.  
     
CHAPTER 3: POWERING MM-10XP SUBWOOFERS WITH THE MPS-488HP  
THE MPS-488HP REAR PANEL  
Link Switches  
The MPS-488HP rear panel includes an AC Input connector,  
Link switches determine how Channel Inputs are routed to  
eight Channel Inputs for receiving source audio, eight Chan- Channel Outputs. When a Channel Input’s Link switch is  
nel Outputs for delivering DC power and balanced audio,  
and seven Link switches for routing audio from inputs to  
outputs.  
OFF (set to the down position), the input is only routed to its  
corresponding output: for example, Channel Input 1 routed  
to Channel Output 1. When a Link switch is ON (set to the  
up position), the input is routed to its corresponding output  
and the next adjacent output: for example, Channel Input 1  
routed to Channel Output 1 and Channel Output 2. If multi-  
ple, adjacent Link switches are enabled, the input is routed  
to each adjacent output: for example, Channel Input 1  
routed to Channel Outputs 1, 2, and 3.  
MPS-488HPp Power Supply Rear Panel  
MPS-488HPe Power Supply Rear Panel  
AC Input  
MPS-488HP Link Switches  
The MPS-488HP has a PowerCon twist-lock AC Input con-  
nector (line, neutral/line, earth). The connector can accept  
different power cord types for outlets used throughout the  
world. Make sure to use the correct power cord for the AC  
power in your area. The MPS-488HP operates at an AC volt-  
age range of 100–240 V at 50–60 Hz.  
NOTE: Channel Inputs are inactive when the  
Link switch for their preceding Channel Input is  
enabled. Connections should not be made to inactive  
Channel Inputs.  
Routing Audio Inputs with the Link Switches  
Channel Inputs  
The following examples illustrate several common routing  
applications for the MPS-488HPp.  
Up to eight channels of balanced audio are received from the  
MPS-488HP’s eight Channel Inputs. The inputs are equipped  
with XLR female connectors (pin 1, ground; pin 2, signal pos-  
itive; pin 3, signal negative). Make sure to use standard bal-  
anced XLR cables with all three pins connected on both ends.  
Routing One Input to Eight Outputs  
To route one Channel Input to eight Channel Outputs:  
Set all Link switches to ON.  
Link 1 Link 2 Link 3 Link 4 Link 5 Link 6 Link 7  
On  
On  
On  
On  
On  
On  
On  
MPS-488HP Channel Inputs  
Channel Inputs default to being routed to their correspond-  
ing Channel Outputs but can also be routed to adjacent out-  
puts with the Link switches, though this affects their input  
1
2
3
4
5
6
7
8
1
1
1
1
1
1
1
1
14  
Download from Www.Somanuals.com. All Manuals Search And Download.  
     
MM-10 OPERATING INSTRUCTIONS  
Routing Two Inputs to Four Outputs Each  
To avoid distortion when linking Channel Inputs, make sure  
the source device can drive the total load impedance of the  
linked MM-10XP subwoofers. The source device must be  
capable of delivering a minimum of 16 dBV (6.3 V rms into  
600 ohms) to yield the maximum peak SPL over the operat-  
ing bandwidth of the subwoofer.  
To route two Channel Inputs to four Channel Outputs each:  
1. Set the Link 4 switch to OFF and all other Link switches  
to ON.  
Link 1 Link 2 Link 3 Link 4 Link 5 Link 6 Link 7  
On  
On  
On  
Off  
On  
On  
On  
NOTE: Most source devices are capable of  
driving loads no smaller than 10 times their  
output impedance. To drive eight MM-10XPs linked  
from a single Channel Input, the source device  
should have an output impedance of approximately  
100 ohms or less.  
1
2
3
4
5
6
7
8
1
1
1
1
5
5
5
5
Channel Outputs  
The MPS-488HP’s eight Channel Outputs deliver DC power  
(48 V DC) and balanced audio to up to eight MM-10XPs. The  
channel outputs can be equipped with either Phoenix 5-pin  
male connectors (on the MPS-488HPp model) or EN3 5-pin  
male connectors (on the MPS-488HPe model).  
Routing Eight Inputs to Eight Separate Outputs  
To route eight Channel Inputs to eight separate Channel  
Outputs:  
Set all Link switches to OFF.  
NOTE: For information on MM-10XP cable  
Link 1 Link 2 Link 3 Link 4 Link 5 Link 6 Link 7  
Off  
Off  
Off  
Off  
Off  
Off  
Off  
tion on cables and cable accessories available from  
ries.” For information on cable assembly, see  
TIP: A single composite cable (such as Belden  
1502) wired for both DC power and balanced  
audio can be used to connect MM-10XPs to Channel  
Outputs.  
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
CAUTION: When wiring cable connections for  
the MPS-488HP channel outputs, it is  
Input Impedance for Linked Channel Inputs  
!
When a Link switch is enabled, the Channel Input’s unbuf-  
fered source signal is transmitted in parallel to each linked  
Channel Output. This causes the Channel Input’s imped-  
ance (normally 10 kOhms for one MM-10XP) to be reduced  
for each linked output. For example:  
extremely important that each pin in the connector is  
wired correctly. Make sure the 48 V DC from the  
MPS-488HP is wired directly (and only) to the 48 V  
DC pins on the MM-10XP connector, and that the  
polarity is observed (negative to negative, positive to  
positive) to avoid damage to the subwoofer. In addi-  
tion, make sure the audio pins are wired correctly;  
polarity reversals for audio signals will affect system  
performance.  
1 Channel Output, 10 kOhm input impedance  
2 Channel Outputs, 5 kOhm input impedance  
4 Channel Outputs, 2500 ohms input impedance  
8 Channel Outputs, 1250 ohms input impedance  
15  
Download from Www.Somanuals.com. All Manuals Search And Download.  
 
CHAPTER 3: POWERING MM-10XP SUBWOOFERS WITH THE MPS-488HP  
Idle Current — The maximum rms current during idle  
periods.  
MPS-488HPp Channel Outputs  
The MPS-488HPp Channel Outputs use Phoenix 5-pin male  
connectors with three pins for balanced audio (positive, neg-  
ative, and shield) and two for DC Power (positive and nega-  
tive). These pins are clearly labeled on the MPS-488HPp rear  
panel.  
Maximum Long-Term Continuous Current — The  
maximum rms current during a period of at least 10 sec-  
onds. The Maximum Long-Term Continuous Current is  
used to calculate temperature increases for cables, to  
ensure that cable sizes and gauges conform to electrical  
code standards. This current rating is also used as a rat-  
ing for slow-reacting thermal breakers.  
Burst Current — The maximum rms current during a  
period of around one second. The Burst Current is used  
as a rating for magnetic breakers. It is also used for cal-  
culating the peak voltage drop in long AC cable runs  
according to the following formula:  
MPS-488HPp Channel Outputs  
Each MPS-488HPp comes with eight Phoenix 5-pin female  
cable connectors for assembling loudspeaker cables.  
V pk (drop) = I pk x R (cable total)  
Ultimate Short-Term Peak Current — A rating for fast-  
reacting magnetic breakers.  
MPS-488HPe Channel Outputs  
Inrush Current — The spike of initial current encoun-  
tered when powering on.  
The MPS-488HPe Channel Outputs use EN3 5-pin female  
connectors with three pins for balanced audio (positive,  
negative, and shield) and two for DC Power (positive and  
negative). These pins are clearly labeled on the  
MPS-488HPe rear panel.  
You can use the following table as a guide for selecting  
cable gauges and circuit breaker ratings for the system’s  
operating voltage.  
Current Draw for MPS-488HP with Eight MM-10XPs  
Current Draw  
115  
230  
100  
(Eight MM-10XPs)  
V AC  
V AC  
V AC  
Idle Current  
0.74 A rms  
3.08 A rms  
0.54 A rms  
1.49 A rms  
0.81 A rms  
3.46 A rms  
Maximum Long-Term  
Continuous Current  
Burst Current  
5.48 A rms  
3.21 A rms  
5.57 A rms  
MPS-488HPe Channel Outputs  
Ultimate Short-Term  
Peak Current  
9.56 A peak  
4.96 A peak 10.28 A peak  
Each MPS-488HPe comes with eight EN3 5-pin male cable  
connectors for assembling loudspeaker cables.  
Inrush Current  
20.0 A peak  
20.0 A peak  
20.0 A peak  
The minimum electrical service amperage required by an  
MPS-488HP is the sum of the Maximum Long-Term Contin-  
uousCurrentforallMM-10XPsconnectedtotheMPS-488HP.  
An additional30 percentabovetheminimumamperageisrec-  
ommended to prevent peak voltage drops at the service entry.  
MPS-488HP CURRENT DRAW  
The current draw for the MPS-488HP and its connected  
loudspeakers is dynamic and fluctuates as operating levels  
change. Since different cables and circuit breakers heat up  
at varying rates, it is important to understand the following  
types of current ratings and how they affect circuit breaker  
and cable specifications.  
NOTE: For best performance, the AC cable  
voltage drop should not exceed 10 V, or  
10 percent at 115 V and 5 percent at 230 V. Make  
sure that even with AC voltage drops that the AC  
voltage always remains within the operating window.  
16  
Download from Www.Somanuals.com. All Manuals Search And Download.  
 
MM-10 OPERATING INSTRUCTIONS  
SAFETY ISSUES  
Pay close attention to these important electrical and safety  
issues.  
CONNECTING MM-10XP SUBWOOFERS TO  
THE MPS-488HP  
To connect MM-10XP subwoofers to the MPS-488HP:  
1. Power off the MPS-488HP.  
The MPS-488HP requires a grounded outlet.  
2. Connect audio sources (from a mixer or processor) to  
the MPS-488HP Channel Inputs. Use balanced XLR  
cables.  
Earth ground  
3. Use the MPS-488HP Link switches to route Channel  
Inputs to the desired Channel Outputs (see “Link  
4. Connect the MM-10XP subwoofers to the MPS-488HP  
Channel Outputs. Use composite cables (such as  
Belden 1502) wired for both DC power and balanced  
audio and outfitted with the appropriate connectors.  
Chassis ground  
When connecting MM-10XP subwoofers equipped with  
Phoenix connectors to the MPS-488HPp power supply,  
use Phoenix 5-pin male to Phoenix 5-pin female cables.  
Do not use a ground-lifting adapter or cut the AC cable  
ground pin.  
Keep all liquids away from the MPS-488HP to avoid haz-  
ards from electrical shock.  
Do not operate the unit if the power cables are frayed or  
broken.  
TIP: You can use two separate cables for  
MM-10XP subwoofer connections: a 2-conduc-  
tor cable for DC power and a 3-conductor cable for  
balanced audio, both attached to a single Phoenix  
connector on each cable end. This allows you to use  
17  
Download from Www.Somanuals.com. All Manuals Search And Download.  
   
CHAPTER 3: POWERING MM-10XP SUBWOOFERS WITH THE MPS-488HP  
a larger gauge for the DC cable so you can achieve  
longer cable runs (see “Cable Lengths and Cable  
5. Power on the MPS-488HP and monitor the LEDs on its  
front panel to verify the connections (see “Voltage and  
6. Check the LEDs on the MM-10XP rear panels and verify  
they are green (ready to reproduce audio).  
When connecting MM-10XP subwoofers equipped with  
EN3 connectors to the MPS-488HPe power supply, use  
EN3 5-pin male to EN3 5-pin female cables.  
7. Enable output from the audio sources (from the mixer or  
processor) connected to the MPS-488HP.  
POWERING MM-10XP SUBWOOFERS WITH  
THE ORIGINAL MPS-488  
The original MPS-488 was designed for use with the  
MM-4XP miniature loudspeaker. While the MPS-488 can  
power up to eight MM-4XPs, it can only power up to four  
MM-10XPs (due to the MM-10XP’s higher power require-  
ments and current draw).  
X
X
X
X
X X X X  
MPS-488P Power Supply  
X X X X  
X X X X  
MPS-488E Power Supply  
Because the MPS-488 can power a maximum of four  
MM-10XPs, the MM-10XPs should only be connected to  
channel outputs 1, 3, 5, and 7. Do not use the even-num-  
bered channel outputs.  
To join two EN3 cables, one with an EN3 5-pin male  
cable mount connector to one with an EN3 5-pin female  
cable mount connector, use an EN3 5-pin female-to-  
male cable coupler (PN 28.163.033.01).  
CAUTION: Make sure MM-10XP loudspeaker  
cables are wired correctly. For details on  
!
assembling loudspeaker cables, see Appendix C,  
18  
Download from Www.Somanuals.com. All Manuals Search And Download.  
 
CHAPTER 4: THE MM-10AC SUBWOOFER  
The MM-10AC subwoofer includes an internal power supply  
AC Input Connector (Blue)  
and locking AC PowerCon connectors. The MM-10AC  
receives audio from an XLR female Audio In connector, and  
also includes an XLR male Audio Loop Out connector for  
daisy-chaining audio signals.  
The blue AC Input connector supplies power to the  
MM-10AC. The input is rated at 20 amps and uses a  
PowerCon3 AC mains locking connector that prevents acci-  
dental disconnections. A 10-foot AC power cable, rated at  
15 amps, is included with each MM-10AC. If you replace the  
included AC power cable, make sure to use a cable with the  
appropriate power plug (on the other end) for the region in  
which you will operate the unit.  
The AC Input connector also supplies power to any addi-  
tional subwoofers connected to the MM-10AC’s gray AC  
Loop Output connector. Each MM-10AC requires approxi-  
mately 0.9 A rms maximum at 115 V AC and 0.4 A rms max-  
imum at 230 V AC.  
CAUTION: When using the included AC power  
cable, do not loop more than 15 additional  
!
MM-10ACs from the AC Loop Output connector at  
115 V (16 total for the circuit), and not more than 36  
at 230 V (37 total for the circuit).  
AC Loop Output Connector (Gray)  
The gray AC Loop Output connector allows multiple  
MM-10AC subwoofers to be looped and powered from a  
single power source. Connect the AC Loop Output of the  
first MM-10AC to the AC Input of the second MM-10AC,  
and so forth. The AC Loop Output uses a PowerCon3 AC  
mains locking connector that prevents accidental discon-  
nections.  
MM-10AC Rear Panel  
THE MM-10AC AC CONNECTORS  
The MM-10AC subwoofer combines advanced loudspeaker  
technology with equally advanced power capabilities.  
Understanding voltage and current requirements, as well as  
electrical safety issues, is critical to the safe operation of the  
MM-10AC. The MM-10AC rear user panel includes the fol-  
lowing PowerCon AC connectors:  
The maximum number of subwoofers that can be looped  
from the AC Loop Output connector is determined by the  
voltage of the power source, the current draw of the looped  
subwoofers, the circuit breaker rating, and the rating of the  
AC power cable connected to the MM-10AC.  
Table 4: Number of MM-10ACs that Can Be Looped  
Circuit Breaker/  
115 V AC  
230 V AC  
100 V AC  
Connector Rating  
15 amps  
15 looped  
(16 total)  
36 looped  
(37 total)  
12 looped  
(13 total)  
NOTE: The current draw for the MM-10AC is  
dynamic and fluctuates as operating levels  
change. The numbers in Table 4 assume that operat-  
ing levels are normal and not such that the subwoof-  
ers are constantly limiting.  
MM-10AC AC Input (Left) and AC Loop Output (Right) Connectors  
19  
Download from Www.Somanuals.com. All Manuals Search And Download.  
   
CHAPTER 4: THE MM-10AC SUBWOOFER  
Each MM-10AC ships with one AC looping connector for  
making AC looping cables. Assembled AC looping cables  
are available from Meyer Sound.  
MM-10AC VOLTAGE REQUIREMENTS  
The MM-10AC operates safely and continuously when the  
AC voltage stays within 100–240 V AC at 50 or 60 Hz. The  
subwoofer allows any combination of voltage to GND (neu-  
tral-line-ground or line-line-ground).  
CAUTION: Do not exceed the current capabil-  
!
ity of the 20-amp Input connector for the  
If the voltage drops below 90 V (brownout), the MM-10AC  
uses stored power to continue operating temporarily; the  
subwoofer will shut down if the voltage does not rise above  
the low boundary before the stored power is used.  
MM-10AC. When looping MM-10ACs, consider the  
total current draw for all units on the circuit, including  
the first.  
If the voltage rises above 264 V, the power supply could  
become damaged.  
POWER CONNECTOR WIRING  
The MM-10AC requires a grounded outlet. To operate safely  
and effectively, it is extremely important that the entire sys-  
tem be properly grounded.  
CAUTION: The power source for the  
MM-10AC should always operate within the  
!
required voltage range, at least a few volts from the  
upper and lower ranges. This will ensure that AC volt-  
age variations from the service entry — or peak volt-  
age drops due to cable runs — will not cause the  
subwoofer’s amplifiers to cycle on and off or cause  
damage to the power supply.  
Blue = neutral  
Brown = hot  
MM-10AC CURRENT DRAW REQUIREMENTS  
Yellow/green =  
earth ground  
(chassis  
The current draw for the MM-10AC is dynamic and fluctu-  
ates as operating levels change. Since different cables and  
circuit breakers heat up at varying rates, it is important to  
understand the following types of current ratings and how  
they affect circuit breaker and cable specifications.  
AC Cable Wiring Scheme  
When wiring international or special-purpose power con-  
nectors:  
Idle Current — The maximum rms current during idle  
Connect the blue wire to the black terminal, or the termi-  
nal marked with an N.  
periods.  
Maximum Long-Term Continuous Current — The  
maximum rms current during a period of at least 10 sec-  
onds. The Maximum Long-Term Continuous Current is  
used to calculate temperature increases for cables, to  
ensure that cable sizes and gauges conform to electrical  
code standards. The current rating is also used as a rat-  
ing for slow-reacting thermal breakers.  
Connect the brown wire to the red terminal, or the termi-  
nal marked with an L.  
Connect the yellow and green wire to the green (or green  
and yellow) terminal, or the terminal marked with an E.  
CAUTION: When creating AC power cables, it  
is important to preserve AC line polarity and  
!
Burst Current — The maximum rms current during a  
period of around one second. The Burst Current is used  
as a rating for magnetic breakers. It is also used for cal-  
culating the peak voltage drop in long AC cable runs  
according to the following formula:  
connect the earth ground on both ends of the cable.  
The MM-10AC requires a grounded connection.  
Always use a grounded outlet and plug. It is  
extremely important that the system be properly  
grounded to operate safely and properly. Do not  
ground-lift the AC cable.  
V pk (drop) = I pk x R (cable total)  
The Burst Current can also be used to calculate the AC  
looping capability of the MM-10AC.  
20  
Download from Www.Somanuals.com. All Manuals Search And Download.  
     
MM-10 OPERATING INSTRUCTIONS  
Ultimate Short-Term Peak Current — A rating for fast-  
reacting magnetic breakers.  
Do not use a ground-lifting adapter or cut the AC cable  
ground pin.  
Inrush Current — The spike of initial current encoun-  
tered when powering on.  
You can use the following table as a guide for selecting  
cable gauges and circuit breaker ratings for the system’s  
operating voltage.  
MM-10AC Current Draw  
Current Draw  
115 V AC  
0.13 A rms  
0.40 A rms  
230 V AC  
0.13 A rms  
0.25 A rms  
100 V AC  
0.14 A rms  
0.46 A rms  
Idle Current  
Do not exceed the current capability of the 20-amp AC  
Input connector for the MM-10AC. When looping  
MM-10ACs, consider the total current draw for all units  
on the circuit, including the first.  
Maximum Long-Term  
Continuous Current  
Burst Current  
0.9 A rms  
0.4 A rms  
1.1 A rms  
Make sure the AC power cable for the MM-10AC has the  
appropriate power plug (on the other end) for the area in  
which you will operate the unit. In addition, the AC power  
cable must be rated for the total current draw of all  
MM-10ACs looped from the power source.  
Ultimate Short-Term  
Peak Current  
2.0 A peak  
1.4 A peak  
2.3 A peak  
Inrush Current  
4.0 A peak  
2.4 A peak  
4.0 A peak  
The minimum electrical service amperage required by an  
MM-10AC subwoofer system is the sum of the Maximum  
Long-Term Continuous Current for each unit. An additional  
30 percent above the minimum amperage is recommended  
to prevent peak voltage drops at the service entry.  
Do not operate the unit if the power cable is frayed or  
broken.  
Keep all liquids away from the MM-10AC to avoid haz-  
ards from electrical shock.  
NOTE: For the best performance, the AC cable  
voltage drop should not exceed 10 V, or  
10 percent at 115 V and 5 percent at 230 V. Make  
sure that even with AC voltage drops that the AC  
voltage always remains within the operating window.  
THE MM-10AC AUDIO CONNECTORS  
The MM-10AC includes an XLR female Audio In connector  
and XLR male Audio Loop Out connector.  
ELECTRICAL SAFETY ISSUES  
Pay close attention to these important electrical and safety  
issues.  
The MM-10AC requires a grounded outlet. Always use a  
grounded outlet and plug.  
MM-10AC Audio In and Audio Loop Out Connectors  
Earth ground  
Audio In Connector  
The XLR female Audio In connector accepts balanced audio  
signals with an input impedance of 10 kOhm. The connector  
uses the following wiring:  
Chassis ground  
Pin 1 — 220 kOhm to chassis and earth ground (ESD  
clamped)  
Pin 2 — Signal (+)  
21  
Download from Www.Somanuals.com. All Manuals Search And Download.  
   
CHAPTER 4: THE MM-10AC SUBWOOFER  
Pin 3 — Signal (–)  
NOTE: Most source devices are capable of  
driving loads no smaller than 10 times their  
output impedance.  
Case — Earth (AC) ground and chassis  
Pins 2 and 3 carry the input as a differential signal. Pin 1 is  
connected to earth through a 220 kOhm, 1000 pF, 15 V  
clamped network. This circuitry provides virtual ground lift  
for audio frequencies while allowing unwanted signals to  
bleed to ground. Make sure to use standard, balanced XLR  
audio cables with all three pins connected on both ends.  
Telescopic grounding is not recommended, and shorting an  
input connector pin to the case may cause a ground loop,  
resulting in hum.  
CAUTION: Make sure that all cabling for  
looped subwoofers is wired correctly (Pin 1 to  
!
Pin 1, Pin 2 to Pin 2, and so forth) to prevent the  
polarity from being reversed. If one or more subwoof-  
ers in a system have reversed polarity, frequency  
response and coverage will be significantly  
degraded.  
TIP: If unwanted noise or hiss is produced by  
the subwoofer, disconnect its input cable. If the  
noise stops, there is most likely nothing wrong with  
the subwoofer. To locate the source of the noise,  
check the audio cable, source audio, and AC power.  
THE MM-10AC INPUT POLARITY SWITCH  
The Input Polarity switch swaps the polarity of the audio  
source signal, which is sometimes necessary to acoustically  
align the subwoofer with other loudspeakers in the system.  
When the switch is in the up (+), non-inverting position, pin 2  
is hot relative to pin 3, resulting in a positive pressure wave  
when a positive signal is applied to pin 2. When the switch is  
in the down (–), inverting position, pin 3 is hot relative to  
pin 2, resulting in a positive pressure wave when a positive  
signal is applied to pin 3.  
Audio Loop Out Connector  
The XLR male Audio Loop Out connector allows multiple  
MM-10AC subwoofers to be looped from a single audio  
source. For applications that require multiple MM-10ACs,  
connect the Audio Loop Out of the first unit to the Audio In  
of the second, and so forth.  
NOTE: The order in which subwoofers are con-  
nected when looping audio signals is unimpor-  
tant. The Audio Loop Out connector is wired in  
parallel to the Audio In connector and transmits the  
unbuffered source signal even when the MM-10AC is  
powered off.  
MM-10AC Input Polarity Switch  
NOTE: The Input Polarity switch only affects  
the subwoofer signal. It has no effect on the  
Audio Loop Out signal.  
To avoid distortion when looping multiple MM-10ACs, make  
sure the source device can drive the total load impedance of  
the looped subwoofers. In addition, the source device must  
be capable of delivering approximately 20 dBV (10 V rms  
into 600 ohms) to yield the maximum peak SPL over the  
entire operating bandwidth of the subwoofers. Most profes-  
sional audio equipment can transmit these source levels.  
THE MM-10AC LIMIT LED  
The MM-10AC has a three-color Limit LED on its rear panel  
that changes color to indicate the subwoofer’s status.  
To calculate the load impedance for the looped subwoofers,  
divide 10 kOhms (the input impedance for a single  
MM-10AC) by the number of looped subwoofers. For exam-  
ple, the load impedance for 10 MM-10AC subwoofers is  
1000 ohms (10 kOhms / 10). To drive this number of looped  
subwoofers, the source device should have an output  
impedance of 100 ohms or less. This same rule applies  
when looping MM-10AC subwoofers with other self-pow-  
ered Meyer Sound loudspeakers.  
MM-10AC Limit LED  
22  
Download from Www.Somanuals.com. All Manuals Search And Download.  
   
MM-10 OPERATING INSTRUCTIONS  
tem to achieve the desired SPL without exposing the  
subwoofers to excessive levels and possible over-  
heating.  
Powering On (Green)  
When powering up the MM-10AC subwoofer, the following  
startup events occur and are indicated by the Limit LED:  
1. The LED flashes green and then yellow during power up.  
MM-10AC Temperature and Limiting  
2. The LED turns solid green indicating the subwoofer is  
ready to reproduce audio.  
The Limit LED turns solid yellow when its heat sink tempera-  
ture reaches 65° C (145° F), indicating the unit is reaching its  
maximum heat dissipation and a reduction in SPL is recom-  
mended. While the MM-10AC will continue to operate while  
the LED is yellow, the limiter threshold is lowered to a safe  
level (causing the output level to be lowered by 6 dB) to pre-  
vent the subwoofer from overheating. When the temperature  
of the heat sink cools to 50°C (122°F), the LED changes  
from yellow to green and the limiter threshold returns to nor-  
mal.  
CAUTION: If the Limit LED turns red and stays  
solid red after powering up and the audio is  
!
muted, the subwoofer has encountered a failure and  
may need to be serviced. Contact Meyer Sound  
Technical Support.  
CAUTION: If the Limit LED turns solid red and  
the MM-10AC continues to output audio,  
!
though at reduced levels, the subwoofer’s voltage  
may have dropped below 90 V AC. When these con-  
ditions are encountered, operation of the subwoofer  
should cease and its power supply and cabling  
should be verified.  
Clipping (Red)  
The Limit LED flashes red when its input signal causes the  
amplifier to overload. If the LED flashes red continuously, the  
subwoofer is severely overloaded and a reduction in the  
input level is recommended.  
Limiting (Yellow)  
CAUTION: If the Limit LED turns solid red and  
the subwoofer continues to output audio,  
Limiting activity is indicated when the Limit LED turns yel-  
low. When engaged, the limiter protects the subwoofer’s  
driver and prevents signal peaks from causing excessive  
distortion in the subwoofer’s amplifier, thereby preserving  
headroom and maintaining smooth frequency responses at  
high levels. When the level returns to normal, below the lim-  
iter’s threshold, the LED turns green and limiting ceases.  
!
though at reduced levels, the subwoofer’s voltage  
may have dropped below 90 V AC. When these con-  
ditions are encountered, operation of the subwoofer  
should cease and its power supply and cabling  
should be verified.  
The MM-10AC performs within its acoustical specifications  
at normal temperatures when the Limit LED is green, or if the  
LED turns yellow for two seconds or less and then returns to  
green for at least one second. If the LED remains yellow for  
longer than three seconds, the subwoofer enters hard limit-  
ing where:  
Increases to the input level have no effect.  
Distortion increases due to clipping and nonlinear driver  
operation.  
The drivers are subjected to excessive heat and excur-  
sion, which will compromise their life span and may  
eventually lead to damage over time.  
CAUTION: The Limit LED turns yellow when  
the subwoofer’s signal rises 2 dB above the  
!
limiting threshold, and indicates a safe, optimum level  
has been exceeded. If the MM-10AC subwoofers in a  
system begin to limit before reaching the desired  
SPL, consider adding more subwoofers to the sys-  
23  
Download from Www.Somanuals.com. All Manuals Search And Download.  
CHAPTER 4: THE MM-10AC SUBWOOFER  
24  
Download from Www.Somanuals.com. All Manuals Search And Download.  
CHAPTER 5: THE MM-10ACX SUBWOOFER  
The MM-10ACX subwoofer includes onboard DC power and  
THE MM-10ACX AC CONNECTORS  
audio routing for driving satellite loudspeakers: up to two  
MM-4XPs, or a single UP-4XP (due to its higher power  
requirements and current draw). Three independent XLR  
female Audio In connectors are provided for the subwoofer  
and satellite loudspeakers. Satellite Out connectors are  
available as either Phoenix 5-pin male or EN3 5-pin female.  
The MM-10ACX also includes locking AC PowerCon con-  
nectors.  
The MM-10ACX subwoofer combines advanced loud-  
speaker technology with equally advanced power capabili-  
ties. Understanding voltage and current requirements, as  
well as electrical safety issues, is critical to the safe opera-  
tion of the MM-10ACX. The MM-10ACX rear user panel  
includes the following PowerCon AC connectors:  
MM-10ACX AC Input (Left) and AC Loop Output (Right) Connectors  
AC Input Connector (Blue)  
The blue AC Input connector supplies power to the  
MM-10ACX. The input is rated at 20 amps and uses a  
PowerCon3 AC mains locking connector that prevents acci-  
dental disconnections. A 10-foot AC power cable, rated at  
15 amps, is included with each MM-10ACX. If you replace  
the included AC power cable, make sure to use a cable with  
the appropriate power plug (on the other end) for the region  
in which you will operate the unit.  
The AC Input connector also supplies power to any addi-  
tional subwoofers connected to the MM-10ACX’s gray AC  
Loop Output connector, as well as any loudspeakers con-  
nected to the Satellite Out connectors. Each MM-10ACX  
requires approximately 3 A rms maximum at 115 V AC and  
1.5 A rms maximum at 230 V AC.  
MM-10ACX Rear Panel, Shown with Phoenix Satellite Connectors  
The MM-10ACX is extremely versatile. It can be used as a  
standalone subwoofer or it can be connected to and used  
with satellite loudspeakers in several different configura-  
tions. For more information, see “MM-10ACX Satellite Con-  
CAUTION: When using the included AC power  
!
cable, do not loop more than five additional  
MM-10ACXs from the AC Loop Output connector at  
115 V (six total for the circuit), and not more than 10  
at 230 V (11 total for the circuit).  
25  
Download from Www.Somanuals.com. All Manuals Search And Download.  
   
CHAPTER 5: THE MM-10ACX SUBWOOFER  
AC Loop Output Connector (Gray)  
POWER CONNECTOR WIRING  
The gray AC Loop Output connector allows multiple  
MM-10ACX subwoofers to be looped and powered from a  
single power source. Connect the AC Loop Output of the  
first MM-10ACX to the AC Input of the second MM-10ACX,  
and so forth. The AC Loop Output uses a PowerCon3 AC  
mains locking connector that prevents accidental discon-  
nections.  
The MM-10ACX requires a grounded outlet. To operate  
safely and effectively, it is extremely important that the  
entire system be properly grounded.  
Blue = neutral  
Brown = hot  
The maximum number of subwoofers that can be looped  
from the AC Loop Output connector is determined by the  
voltage of the power source, the current draw of the looped  
subwoofers and any connected satellite loudspeakers, the  
circuit breaker rating, and the rating of the AC power cable  
connected to the MM-10ACX.  
Yellow/green =  
earth ground  
(chassis  
Table 5: Number of MM-10ACXs that Can Be Looped (with Two  
MM-4XP Satellite Loudspeakers Attached to Each MM-10ACX)  
AC Cable Wiring Scheme  
Circuit Breaker/  
Connector Rating  
115 V AC  
230 V AC  
100 V AC  
When wiring international or special-purpose power connec-  
tors:  
15 amps  
5 looped  
(6 total)  
10 looped  
(11 total)  
4 looped  
(5 total)  
Connect the blue wire to the black terminal, or the termi-  
nal marked with an N.  
NOTE: The current draw for the MM-10ACX is  
dynamic and fluctuates as operating levels  
change. The numbers in Table 5 assume that operat-  
ing levels are normal and not such that the subwoof-  
ers and satellite loudspeakers are constantly limiting.  
Connect the brown wire to the red terminal, or the termi-  
nal marked with an L.  
Connect the yellow and green wire to the green (or green  
and yellow) terminal, or the terminal marked with an E.  
CAUTION: When creating AC power cables, it  
is important to preserve AC line polarity and  
Each MM-10ACX ships with one AC looping connector for  
making AC looping cables. Assembled AC looping cables  
are available from Meyer Sound.  
!
connect the earth ground on both ends of the cable.  
The MM-10ACX requires a grounded connection.  
Always use a grounded outlet and plug. It is  
extremely important that the system be properly  
grounded to operate safely and properly. Do not  
ground-lift the AC cable.  
CAUTION: Do not exceed the current capabil-  
ity of the 20-amp Input connector for the  
!
MM-10ACX. When looping MM-10ACXs, consider  
the total current draw for all subwoofers and satellite  
loudspeakers on the circuit.  
MM-10ACX VOLTAGE REQUIREMENTS  
The MM-10ACX operates safely and continuously when the  
AC voltage stays within 100–240 V AC at 50 or 60 Hz. The  
subwoofer allows any combination of voltage to GND (neu-  
tral-line-ground or line-line-ground).  
If the voltage drops below 90 V (brownout), the MM-10ACX  
uses stored power to continue operating temporarily; the  
subwoofer will shut down if the voltage does not rise above  
the low boundary before the stored power is used.  
If the voltage rises above 264 V, the power supply could  
become damaged.  
26  
Download from Www.Somanuals.com. All Manuals Search And Download.  
   
MM-10 OPERATING INSTRUCTIONS  
CAUTION: The power source for the  
MM-10ACX should always operate within the  
You can use the following tables as a guide for selecting  
cable gauges and circuit breaker ratings for the system’s  
operating voltage.  
!
required voltage range, at least a few volts from the  
upper and lower ranges. This will ensure that AC volt-  
age variations from the service entry — or peak volt-  
age drops due to cable runs — will not cause the  
subwoofer’s amplifiers to cycle on and off or cause  
damage to the power supply.  
MM-10ACX Current Draw with No Satellite Loudspeakers  
Current Draw  
115 V AC  
0.21 A rms  
0.48 A rms  
230 V AC  
0.20 A rms  
0.31 A rms  
100 V AC  
0.23 A rms  
0.55 A rms  
Idle Current  
Maximum Long-Term  
Continuous Current  
Burst Current  
1.1 A rms  
0.6 A rms  
1.3 A rms  
MM-10ACX CURRENT DRAW  
REQUIREMENTS  
Ultimate Short-Term  
Peak Current  
2.2 A peak  
1.6 A peak  
2.5 A peak  
The current draw for the MM-10ACX is dynamic and fluctu-  
ates as operating levels change. Since different cables and  
circuit breakers heat up at varying rates, it is important to  
understand the following types of current ratings and how  
they affect circuit breaker and cable specifications.  
Inrush Current  
6.6 A peak  
3.7 A peak  
7.2 A peak  
MM-10ACX Current Draw with Two MM-4XP Satellite  
Loudspeakers Attached  
Current Draw  
115 V AC  
0.32 A rms  
0.90 A rms  
230 V AC  
0.26 A rms  
0.51 A rms  
100 V AC  
0.36 A rms  
1.02 A rms  
Idle Current — The maximum rms current during idle  
Idle Current  
periods.  
Maximum Long-Term  
Continuous Current  
Maximum Long-Term Continuous Current — The  
maximum rms current during a period of at least 10 sec-  
onds. The Maximum Long-Term Continuous Current is  
used to calculate temperature increases for cables, to  
ensure that cable sizes and gauges conform to electrical  
code standards. The current rating is also used as a rat-  
ing for slow-reacting thermal breakers. In addition, the  
Maximum Long-Term Continuous Current can be used  
to calculate the AC looping capability of the MM-10ACX.  
Burst Current  
2.5 A rms  
1.3 A rms  
3.0 A rms  
Ultimate Short-Term  
Peak Current  
4.5 A peak  
2.8 A peak  
5.0 A peak  
Inrush Current  
7.6 A peak  
4.4 A peak  
8.4 A peak  
The minimum electrical service amperage required by an  
MM-10ACX subwoofer system is the sum of the Maximum  
Long-Term Continuous Current for each unit. An additional  
30 percent above the minimum amperage is recommended  
to prevent peak voltage drops at the service entry.  
Burst Current — The maximum rms current during a  
period of around one second. The Burst Current is used  
as a rating for magnetic breakers. It is also used for cal-  
culating the peak voltage drop in long AC cable runs  
according to the following formula:  
NOTE: For the best performance, the AC cable  
voltage drop should not exceed 10 V, or  
10 percent at 115 V and 5 percent at 230 V. Make  
sure that even with AC voltage drops that the AC  
voltage always remains within the operating window.  
V pk (drop) = I pk x R (cable total)  
The Burst Current can also be used to calculate the AC  
looping capability of the MM-10ACX.  
Ultimate Short-Term Peak Current — A rating for fast-  
reacting magnetic breakers.  
Inrush Current — The spike of initial current encoun-  
tered when powering on.  
27  
Download from Www.Somanuals.com. All Manuals Search And Download.  
 
CHAPTER 5: THE MM-10ACX SUBWOOFER  
ELECTRICAL SAFETY ISSUES  
THE MM-10ACX AUDIO IN CONNECTORS  
Pay close attention to these important electrical and safety  
issues.  
The MM-10ACX includes three XLR female Audio In connec-  
tors for Satellite 1, Satellite 2, and Subwoofer.  
The MM-10ACX requires a grounded outlet. Always use  
a grounded outlet and plug.  
Earth ground  
MM-10ACX Audio In Connectors: Satellite 1, Satellite 2, and Subwoofer  
The XLR female Audio In connectors accept balanced audio  
signals with an input impedance of 10 kOhm. The connec-  
tors use the following wiring:  
Chassis ground  
Pin 1 — 220 kOhm to chassis and earth ground (ESD  
clamped)  
Pin 2 — Signal (+)  
Do not use a ground-lifting adapter or cut the AC cable  
ground pin.  
Pin 3 — Signal (–)  
Case — Earth (AC) ground and chassis  
Pins 2 and 3 carry the input as a differential signal. Pin 1 is  
connected to earth through a 220 kOhm, 1000 pF, 15 V  
clamped network. This circuitry provides virtual ground lift  
for audio frequencies while allowing unwanted signals to  
bleed to ground. Make sure to use standard, balanced XLR  
audio cables with all three pins connected on both ends.  
Telescopic grounding is not recommended, and shorting an  
input connector pin to the case may cause a ground loop,  
resulting in hum.  
Do not exceed the current capability of the 20-amp AC  
Input connector for the MM-10ACX. When looping  
MM-10ACXs, consider the total current draw for all units  
on the circuit, including the first.  
TIP: If unwanted noise or hiss is produced by  
the subwoofer, disconnect its input cable. If the  
noise stops, there is most likely nothing wrong with  
the subwoofer. To locate the source of the noise,  
check the audio cable, source audio, and AC power.  
Make sure the AC power cable for the MM-10ACX has  
the appropriate power plug (on the other end) for the  
area in which you will operate the unit. In addition, the  
AC power cable must be rated for the total current draw  
of all MM-10ACXs looped from the power source.  
Do not operate the unit if the power cable is frayed or  
broken.  
Keep all liquids away from the MM-10ACX to avoid haz-  
ards from electrical shock.  
28  
Download from Www.Somanuals.com. All Manuals Search And Download.  
   
MM-10 OPERATING INSTRUCTIONS  
THE MM-10ACX SATELLITE OUT  
CONNECTORS  
EN3 Outputs  
The MM-10ACX Satellite Outs are available as EN3 5-pin  
female connectors with three pins for balanced audio (posi-  
tive, negative, and shield) and two pins for DC Power (posi-  
tive and negative). These pins are clearly labeled on the  
MM-10ACX rear panel. A single composite cable (such as  
Belden 1502) wired for both DC power and balanced audio  
can be used to connect to each satellite loudspeaker.  
The Satellite Out connectors deliver DC power (48 V DC)  
and balanced audio to satellite loudspeakers: up to two  
MM-4XPs, or a single UP-4XP (due to its higher power  
requirements and current draw). The source audio for the  
satellite loudspeakers is received from the MM-10ACX’s  
Audio 1 In and Audio 2 In connectors. The DC power for the  
satellite loudspeakers is generated by the MM-10ACX’s  
onboard DC power capabilities.  
The Satellite Outs can be equipped with either Phoenix 5-  
pin male connectors or EN3 5-pin female connectors.  
CAUTION: When wiring cable connections for  
the Satellite Outs, it is extremely important that  
!
each pin in the connector is wired correctly. Make  
sure the 48 V DC from the MM-10ACX is wired  
directly (and only) to the 48 V DC pins on the connec-  
tor for the satellite loudspeaker, and that the polarity  
is observed (negative to negative, positive to positive)  
to avoid damage to the loudspeaker. In addition,  
make sure the audio pins are wired correctly; polarity  
reversals for audio signals can affect system perfor-  
mance.  
MM-10ACX Satellite Outs, EN3  
When equipped with EN3 Satellite Outs, the MM-10ACX  
comes with EN3 5-pin male cable connectors for assem-  
bling loudspeaker cables. For information on cable require-  
ments for the satellite loudspeaker, refer to its operating  
instructions. For information on cables and cable accesso-  
Accessories.” For information on cable assembly, see  
Phoenix Outputs  
The MM-10ACX Satellite Outs are available as Phoenix 5-  
pin male connectors with three pins for balanced audio  
(positive, negative, and shield) and two pins for DC Power  
(positive and negative). These pins are clearly labeled on the  
MM-10ACX rear panel. A single composite cable (such as  
Belden 1502) wired for both DC power and balanced audio  
can be used to connect to each satellite loudspeaker.  
THE MM-10ACX INPUT SELECT SWITCH  
The Input Select switch determines the audio source signal  
for the subwoofer. When the switch is in the down position  
(SUB CH), the source signal is received from the Subwoofer  
Audio In connector. When the switch is in the up position  
(SUM CH 1 + 2), the source signal is received from the  
Satellite 1 and Satellite 2 Audio In connectors and is  
summed.  
MM-10ACX Satellite Outs, Phoenix  
When equipped with Phoenix Satellite Outs, the MM-10ACX  
comes with Phoenix 5-pin female cable connectors for  
assembling loudspeaker cables. For information on cable  
requirements for the satellite loudspeaker, refer to its oper-  
ating instructions. For information on cables and cable  
accessories available from Meyer Sound, see Appendix A,  
“MM-10 Accessories.” For information on cable assembly,  
MM-10ACX Input Select Switch  
29  
Download from Www.Somanuals.com. All Manuals Search And Download.  
   
CHAPTER 5: THE MM-10ACX SUBWOOFER  
NOTE: The Input Select switch is only included  
THE MM-10ACX INPUT POLARITY SWITCH  
on the MM-10ACX model. The switch only  
affects the subwoofer signal and has no effect on the  
Satellite Outs.  
The Input Polarity switch swaps the polarity of the audio  
source signal, which is sometimes necessary to acoustically  
align the subwoofer with other loudspeakers in the system.  
When the switch is in the up (+) position, pin 2 is hot relative  
to pin 3, resulting in a positive pressure wave when a posi-  
tive signal is applied to pin 2. When the switch is in the  
down (–) position, pin 3 is hot relative to pin 2, resulting in a  
positive pressure wave when a positive signal is applied to  
pin 3.  
The Input Select Switch and Summing  
When the Input Select switch is in the up position (SUM  
CH 1 + 2), the source signal that is routed to the subwoofer  
from the Satellite Audio Ins is attenuated.  
If audio signals are present at both Satellite Audio Ins,  
the signal is summed and attenuated by 6 dB, resulting  
in a net gain of 0 dB.  
If only a single audio signal is present at one of the Satel-  
lite Audio Ins, the signal is also attenuated by 6 dB. But  
this time the result is a net gain of -6 dB.  
MM-10ACX Input Polarity Switch  
THE MM-10ACX GAIN KNOB  
NOTE: The Input Polarity switch only affects  
the subwoofer signal. It has no effect on the  
Satellite Outs.  
The Gain knob adjust the subwoofer signal from completely  
attenuated to +10 dB and can be used to the balanced the  
subwoofer output with that of the satellite loudspeakers.  
The Gain knob is always active, regardless of the Input  
Select switch setting.  
THE MM-10ACX LIMIT LED  
The MM-10ACX has a three-color Limit LED on its rear panel  
that changes color to indicate the subwoofer’s status.  
MM-10ACX Gain Knob  
NOTE: The Gain knob is only included on the  
MM-10ACX model. The knob only affects the  
subwoofer signal and has no effect on the Satellite  
Outs.  
MM-10ACX Limit LED  
Powering On (Green)  
When powering up the MM-10ACX subwoofer, the following  
startup events occur and are indicated by the Limit LED:  
1. The LED flashes green and then yellow during power up.  
2. The LED turns solid green indicating the subwoofer is  
ready to reproduce audio.  
30  
Download from Www.Somanuals.com. All Manuals Search And Download.  
     
MM-10 OPERATING INSTRUCTIONS  
CAUTION: If the Limit LED turns red and stays  
solid red after powering up and the audio is  
MM-10ACX Temperature and Limiting  
!
The Limit LED turns solid yellow when its heat sink tempera-  
ture reaches 65° C (145° F), indicating the unit is reaching its  
maximum heat dissipation and a reduction in SPL is recom-  
mended. While the MM-10ACX will continue to operate  
while the LED is yellow, the limiter threshold is lowered to a  
safe level (causing the output level to be lowered by 6 dB) to  
prevent the subwoofer from overheating. When the temper-  
ature of the heat sink cools to 50°C (122°F), the LED  
changes from yellow to green and the limiter threshold  
returns to normal.  
muted, the subwoofer has encountered a failure and  
may need to be serviced. Contact Meyer Sound  
Technical Support.  
CAUTION: If the Limit LED turns solid red and  
the MM-10ACX continues to output audio,  
!
though at reduced levels, the subwoofer’s voltage  
may have dropped below 90 V AC. When these con-  
ditions are encountered, operation of the subwoofer  
should cease and its power supply and cabling  
should be verified.  
Clipping (Red)  
The Limit LED flashes red when its input signal causes the  
amplifier to overload. If the LED flashes red continuously, the  
subwoofer is severely overloaded and a reduction in the  
input level is recommended.  
Limiting (Yellow)  
Limiting activity is indicated when the Limit LED turns yel-  
low. When engaged, the limiter protects the subwoofer’s  
driver and prevents signal peaks from causing excessive  
distortion in the subwoofer’s amplifier, thereby preserving  
headroom and maintaining smooth frequency responses at  
high levels. When the level returns to normal, below the lim-  
iter’s threshold, the LED turns green and limiting ceases.  
CAUTION: If the Limit LED turns solid red and  
the subwoofer continues to output audio,  
!
though at reduced levels, the subwoofer’s voltage  
may have dropped below 90 V AC. When these con-  
ditions are encountered, operation of the subwoofer  
should cease and its power supply and cabling  
should be verified.  
The MM-10ACX performs within its acoustical specifications  
at normal temperatures when the Limit LED is green, or if the  
LED turns yellow for two seconds or less and then returns to  
green for at least one second. If the LED remains yellow for  
longer than three seconds, the subwoofer enters hard limit-  
ing where:  
Increases to the input level have no effect.  
Distortion increases due to clipping and nonlinear driver  
operation.  
The drivers are subjected to excessive heat and excur-  
sion, which will compromise their life span and may  
eventually lead to damage over time.  
CAUTION: The Limit LED turns yellow when  
the subwoofer’s signal rises 2 dB above the  
!
limiting threshold, and indicates a safe, optimum level  
has been exceeded. If the MM-10ACX subwoofers in  
a system begin to limit before reaching the desired  
SPL, consider adding more subwoofers to the sys-  
tem to achieve the desired SPL without exposing the  
subwoofers to excessive levels and possible over-  
heating.  
31  
Download from Www.Somanuals.com. All Manuals Search And Download.  
CHAPTER 5: THE MM-10ACX SUBWOOFER  
MM-10ACX SATELLITE CONFIGURATIONS  
Single Channel  
Satellite 1 Out to MM-4XP (or UP-4XP)  
(Balanced audio, 48 V DC)  
Balanced audio,  
single channel, to  
Audio In Satellite 1  
AC power  
to AC Input  
MM-10ACX Single-Channel Satellite System (Shown with EN3 Connectors)  
To configure a single-channel satellite system with one  
MM-10ACX and either one MM-4XP or one UP-4XP:  
4. If necessary, to accommodate for the placement of the  
subwoofer and satellite loudspeaker, adjust the Input  
Polarity switch and Gain knob on the MM-10ACX.  
1. Connect a single audio signal to Audio In for Satellite 1  
on the MM-10ACX.  
NOTE: The MM-10ACX can power up to two  
MM-4XPs, or a single UP-4XP (due to its  
higher power requirements and current draw).  
2. Connect Satellite 1 Out from the MM-10ACX to the loud-  
speaker input of the MM-4XP or UP-4XP.  
3. Set the Input Select switch on the MM-10ACX to  
SUM CH 1+2 (up).  
32  
Download from Www.Somanuals.com. All Manuals Search And Download.  
 
MM-10 OPERATING INSTRUCTIONS  
Dual Channel  
Satellite 1 Out and  
Satellite 2 Out to MM-4XPs  
(Balanced audio, 48 V DC)  
Balanced audio,  
dual channels, to  
Satellite 1 Audio In  
and Satellite 2 Audio In  
AC power  
to AC Input  
MM-10ACX Dual-Channel Satellite System (Shown with EN3 Connectors)  
To configure a dual-channel satellite system with one  
MM-10ACX and two MM-4XPs:  
4. Connect the Satellite 2 Out from the MM-10ACX to the  
loudspeaker input of the right MM-4XP.  
1. Connect the left audio signal to Audio In for Satellite 1 on  
the MM-10ACX.  
5. Set the Input Select switch on the MM-10ACX to  
SUM CH 1+2 (up).  
2. Connect the right audio signal to Audio In for Satellite 2  
on the MM-10ACX.  
6. If necessary, to accommodate for the placement of the  
subwoofer and satellite loudspeakers, adjust the Input  
Polarity switch and Gain knob on the MM-10ACX.  
3. Connect the Satellite 1 Out from the MM-10ACX to the  
loudspeaker input of left MM-4XP.  
33  
Download from Www.Somanuals.com. All Manuals Search And Download.  
CHAPTER 5: THE MM-10ACX SUBWOOFER  
Dual Channel + Sub Channel (2.1)  
Satellite 1 Out and  
Satellite 2 Out to MM-4XPs  
(Balanced audio, 48 V DC)  
Balanced audio,  
dual channels, to  
Satellite 1 Audio In  
and Satellite 2 Audio In  
Balancedaudio,  
single channel,  
to Subwoofer  
Audio In  
AC power  
to AC Input  
MM-10ACX Dual Channel + Sub Channel System (Shown with EN3 Connectors)  
To configure a 2.1 satellite system with one MM-10ACX and  
two MM-4XPs:  
4. Connect the Satellite Out 1 from the MM-10ACX to the  
loudspeaker input of left MM-4XP.  
1. Connect the left audio signal to Audio In for Satellite 1 on  
the MM-10ACX.  
5. Connect the Satellite Out 2 from the MM-10ACX to the  
loudspeaker input of the right MM-4XP.  
2. Connect the right audio signal to Audio In for Satellite 2  
on the MM-10ACX.  
6. Set the Input Select switch on the MM-10ACX to  
SUB CH (down).  
3. Connect the subwoofer audio signal to the Subwoofer  
Audio In on the MM-10ACX.  
7. If necessary, to accommodate for the placement of the  
subwoofer and satellite loudspeakers, adjust the Input  
Polarity switch and Gain knob on the MM-10ACX.  
34  
Download from Www.Somanuals.com. All Manuals Search And Download.  
CHAPTER 6: MOUNTING THE MM-10  
The MM-10 is available with top and side nut plates with  
either 3/8"-16 or metric M10 threaded nuts. The optional  
MUB-MM10 u-bracket mounts the MM-10 on ceilings and  
walls at adjustable angles.  
THE MUB-MM10 U-BRACKET  
The MUB-MM10 U-bracket mounts the MM-10 on ceilings  
and walls at adjustable angles. The U-bracket’s adjustment  
slot lets you adjust how close the MM-10 is located to the  
mounting surface and at what angle the subwoofer will be  
positioned. The MUB-MM10 is available in two kits with  
either 3/8"-16 hardware (PN 40.199.060.01) or M10 hard-  
ware (PN 40.199.060.02).  
IMPORTANT SAFETY CONSIDERATIONS  
When installing Meyer Sound loudspeakers, the following  
precautions should always be observed:  
All Meyer Sound products must be used in accordance  
with local, state, federal, and industry regulations. It is  
the owner’s and user’s responsibility to evaluate the reli-  
ability of any rigging or mounting method for their appli-  
cation. Rigging should only be carried out by  
experienced professionals.  
Use mounting and rigging hardware that has been rated  
to meet or exceed the weight being hung.  
Make sure to attach mounting hardware to the building's  
structural components (studs or joists), and not just to  
the wall surface. Verify that the building's structure and  
the anchors used for the installation will safely support  
the total weight of the mounted loudspeakers.  
MUB-MM10 U-Bracket  
Use mounting hardware appropriate for the surface  
where the loudspeaker will be installed.  
Ceiling-Mounting with the MUB-MM10  
The MM-10 can be mounted on a ceiling or underbalcony  
area with the MUB-MM10 U-bracket.  
Make sure bolts are tightened securely. Meyer Sound  
recommends using Loctite® on bolt threads and safety  
cables.  
Inspect mounting and rigging hardware regularly. Imme-  
diately replace any worn or damaged components.  
MUB-MM10, Ceiling-Mounted  
35  
Download from Www.Somanuals.com. All Manuals Search And Download.  
     
CHAPTER 6: MOUNTING THE MM-10  
Wall-Mounting with the MUB-MM10  
The MUB-MM10 U-bracket lets you mount the MM-10  
either vertically or horizontally on a wall.  
MUB-MM10, Horizontal Wall Mount  
36  
Download from Www.Somanuals.com. All Manuals Search And Download.  
APPENDIX A: MM-10 ACCESSORIES  
MM-10 ACCESSORIES  
The following MM-10 accessories are available from Meyer Sound.  
MM-10 Accessories  
Part Number  
Accessory  
Notes  
09.183.001.01  
Channel Outputs equipped with Phoenix  
5-pin male connectors; use with MM-10XPs  
equipped with Phoenix connectors  
MPS-488HPp external power supply  
(with US power cord)  
09.183.001.02  
09.183.001.03  
09.183.001.04  
MPS-488HPp external power supply  
(with CE power cord)  
Channel Outputs equipped with EN3 5-pin  
female connectors; use with MM-10XPs  
equipped with EN3 connectors  
MPS-488HPe external power supply  
(with US power cord)  
MPS-488HPe external power supply  
(with CE power cord)  
40.199.060.01  
40.199.060.02  
40.174.015.01  
40.174.015.02  
MUB-MM10 U-bracket  
MUB-MM10 U-bracket  
Horizontal rain hood kit  
Vertical rain hood kit  
With 3/8”-16 hardware.  
With M10 hardware.  
Included with weather-protected MM-10s.  
Only recommended for use with  
weather-protected MM-10s.  
PHOENIX AND EN3 CABLE CONNECTORS AND ADAPTERS  
The following Phoenix and EN3 cable connectors and adapters are available from Meyer Sound.  
Phoenix and EN3 Cable Connectors and Adapters  
Part Number  
Connector/Adapter  
Use  
484.065  
Phoenix 5-pin female cable mount connec- Connects to MM-10XPs equipped with Phoe-  
tor  
nix connectors, and MPS-488HPp Channel  
Outputs  
468.069  
468.071  
EN3 5-pin female cable mount connector  
EN3 5-pin male cable mount connector  
Connects to MM-10XPs equipped with EN3  
connectors  
Connects to MPS-488HPe Channel Out-  
puts  
468.072  
EN3 5-pin female inline cable adapter  
EN3 5-pin male inline cable adapter  
Cable coupler EN3 5-pin female-to-male  
Connects to EN3 5-pin male cable mount  
connectors  
468.073  
Connects to EN3 5-pin female cable mount  
connectors  
28.163.033.01  
Joins two cables: one with an EN3 5-pin male  
cable mount connector to one with an EN3  
5-pin female cable mount connector  
37  
Download from Www.Somanuals.com. All Manuals Search And Download.  
   
APPENDIX A: MM-10 ACCESSORIES  
PHOENIX AND EN3 LOUDSPEAKER CABLES  
The following Phoenix and EN3 cables are available from Meyer Sound and can be used to connect MM-10XPs to  
MPS-488HPs, as well as to connect MM-10ACXs to satellite loudspeakers.  
NOTE: Phoenix and EN3 loudspeaker cables and bulk cable use Belden 1502R (regular) or Belden 1502P (ple-  
num) cable. Belden 1502 is a composite cable comprised of two 18 AWG wires for DC power, two 22 AWG  
wires for balanced audio, and one 24 AWG wire for audio shield.  
Phoenix and EN3 Loudspeaker Cables  
Part Number  
524.014  
Cable  
Color  
Black  
White  
Black  
White  
Black  
Coating  
Regular  
Plenum  
Regular  
Plenum  
Regular  
Length  
500 ft spool  
500 ft spool  
10 ft  
Bulk (no connectors)  
524.015  
Bulk (no connectors)  
28.163.009.01  
28.163.009.11  
28.163.009.21  
28.163.009.22  
28.163.009.23  
28.163.009.24  
28.163.009.25  
28.163.009.26  
28.163.009.31  
28.163.009.32  
28.163.009.33  
28.163.009.34  
28.163.009.35  
28.163.009.36  
28.163.033.01  
EN3 5-pin female to pigtail  
EN3 5-pin female to pigtail  
EN3 5-pin female to EN3 5-pin male  
10 ft  
10 ft  
20 ft  
30 ft  
50 ft  
100 ft  
150 ft  
10 ft  
EN3 5-pin female to EN3 5-pin male  
White  
Plenum  
20 ft  
30 ft  
50 ft  
100 ft  
150 ft  
Cable coupler EN3 5-pin female-to-male (joins two cables: one with an EN3 5-pin male  
cable mount connector to one with an EN3 5-pin female cable mount connector)  
28.163.009.41  
28.163.009.42  
28.163.009.43  
28.163.009.44  
28.163.009.45  
28.163.009.46  
28.163.009.51  
28.163.009.52  
28.163.009.53  
28.163.009.54  
28.163.009.55  
28.163.033.01  
EN3 5-pin female to Phoenix 5-pin female  
Black  
Regular  
10 ft  
20 ft  
30 ft  
50 ft  
100 ft  
150 ft  
10 ft  
EN3 5-pin female to Phoenix 5-pin female  
White  
Plenum  
20 ft  
30 ft  
50 ft  
100 ft  
150 ft  
38  
Download from Www.Somanuals.com. All Manuals Search And Download.  
APPENDIX B: OPTIONAL RAIN HOODS  
A weather-protected version of the MM-10 subwoofer is avail-  
able with rain hood kits that safeguard the subwoofer’s elec-  
tronics from the elements in fixed, outdoor installations. The  
rain hood is available in both horizontal (PN 40.174.015.01)  
and vertical (PN 40.174.015.02) versions. The rain hood is  
made of a durable, high-impact polycarbonate that is also  
transparent, allowing the subwoofer's connections and LEDs  
to be visible.  
INSTALLING THE HORIZONTAL RAIN HOOD  
To install the MM-10 horizontal rain hood:  
1. Orient the MM-10 horizontally with its user panel to the  
left.  
1. Attach any required cables to the subwoofer.  
2. If the rain hood’s gasket material is not attached, firmly  
attach it to the rain hood’s inner edges. Do not attach the  
gasket directly to the user panel.  
2.50  
[63.5mm]  
3. Attach the rain hood by slipping it under the flange at the  
top of the loudspeaker, placing it flush against the user  
panel. Align the rain hood’s holes with those in the panel.  
4.15  
[105.4mm]  
6.25  
[158.8mm]  
6.22  
[157.9mm]  
5.51  
[140.0mm]  
4.68  
[118.8mm]  
MM-10 Horizontal Rain Hood Dimensions  
4. Secure the rain hood to the user panel by inserting the  
lock pins in the two bottom holes. Insert the pins all the  
way so they lock.  
5.13  
[130 mm]  
INSTALLING THE VERTICAL RAIN HOOD  
To install the MM-10 vertical rain hood:  
4.22  
[107 mm]  
1. Orient the MM-10 vertically with its user panel at the top.  
2. Attach any required cables to the subwoofer.  
6.25  
[159 mm]  
3. If the rain hood’s gasket material is not attached, firmly  
attach it to the rain hood’s inner edges. Do not attach the  
gasket directly to the user panel.  
2.50  
[64 mm]  
6.06  
[154 mm]  
5.57  
[141 mm]  
MM-10 Vertical Rain Hood Dimensions  
39  
Download from Www.Somanuals.com. All Manuals Search And Download.  
 
APPENDIX B: OPTIONAL RAIN HOODS  
4. Attach the rain hood by slipping it under the flange on  
the right side of the subwoofer, placing it flush against  
the user panel. Align the rain hood’s holes with those in  
the panel.  
5. Secure the rain hood to the user panel by inserting the  
lock pins in the two left holes. Insert the pins all the way  
so they lock.  
Tilt for Vertically-Oriented, Weather-Protected  
MM-10s  
When installing vertically-oriented, weather-protected  
MM-10s, the units must be mounted at a 0-degree, or  
downward, tilt. This ensures that water will not accumulate  
in the front of loudspeaker.  
40  
Download from Www.Somanuals.com. All Manuals Search And Download.  
APPENDIX C: PHOENIX AND EN3 CABLE ASSEMBLY  
ASSEMBLING EN3-TO-EN3 LOUDSPEAKER CABLES  
When connecting MM-10XP loudspeakers equipped with EN3 connectors to the MPS-488HPe power supply, you need an  
EN3 5-pin female to EN3 5-pin male cable. The following procedure documents how to assemble this cable. If you are start-  
ing with an EN3-to-pigtail cable (included with the MM-10XP), you can skip step 5 in this procedure.  
NOTE: Cable mount connectors cannot connect to other cable mount connectors. Cable mount connectors  
can only connect to panel mount connectors (like those on the MM-10XP and MPS-488HPe) or inline connec-  
tors. To extend cables with EN3 connectors on both ends you can use an EN3 5-pin female-to-male cable coupler.  
Assembled EN3-to-EN3 Cable  
To assemble an EN3-to-EN3 loudspeaker cable:  
1. Disassemble the EN3 5-pin male connector and feed one end of the cable through the boot, cable clamp housing, and  
coupling ring.  
Boot  
Coupling ring  
Cable clamp  
housing  
Cord connector  
Disassembled EN3 5-Pin Male Cable Mount Connector  
41  
Download from Www.Somanuals.com. All Manuals Search And Download.  
   
APPENDIX C: PHOENIX AND EN3 CABLE ASSEMBLY  
2. If the cable has not been stripped, strip the outer shielding 1” and then strip the black, red, blue, and white wires .275”.  
1”  
0.275”  
3. Solder the five exposed conductors to the five pins on the EN3 cord connector using the following wiring scheme.  
Dimple identifies Pin #1  
Pin #5, White,  
audio (+)  
Pin #5, White,  
audio (+)  
Pin #1, Black,  
48 V DC (–)  
Pin #2, Red,  
48 V DC (+)  
Pin #4, Blue,  
audio (–)  
Pin #4, Blue,  
audio (–)  
REAR  
FRONT  
Pin #3, Unshielded,  
audio shield  
Pin Destinations for EN3 5-Pin Male Cable Mount Connector  
4. Reassemble the EN3 5-pin male connector:  
Align the coupling ring’s side notches with the cord connector’s side notches and slide the couple ring onto the cord  
connector.  
Carefully insert the end of the cable clamp housing into the cord connector until it locks into place. Snap the cable  
clamps in the cable clamp housing into their compartments.  
Slide the boot forward so it covers the cable clamp housing completely.  
42  
Download from Www.Somanuals.com. All Manuals Search And Download.  
MM-10 OPERATING INSTRUCTIONS  
5. Repeat the previous steps to attach the EN3 5-pin female connector to the other end of the cable.  
Dimple identifies Pin #1  
Pin #5, White,  
audio (+)  
Pin #5, White,  
audio (+)  
Pin #1, Black,  
48 V DC (–)  
Pin #2, Red,  
48 V DC (+)  
Pin #4, Blue,  
audio (–)  
Pin #4, Blue,  
audio (–)  
REAR  
FRONT  
Pin #3, Unshielded,  
audio shield  
Pin Destinations for EN3 5-Pin Female Cable Mount Connector  
ASSEMBLING EN3-TO-PHOENIX LOUDSPEAKER CABLES  
When connecting MM-10XP loudspeakers equipped with EN3 connectors to the MPS-488HPp power supply, you need an  
EN3 5-pin female to Phoenix 5-pin female cable. The following procedure documents how to assemble this cable. If you are  
starting with an EN3-to-pigtail cable (included with the MM-10XP), you can skip steps 4–7 in this procedure.  
Assembled EN3-to-Phoenix Cable  
To assemble an EN3-to-Phoenix cable:  
1. If cable has not been stripped, strip the outer shielding 1” and then strip the black, red, blue, and white wires .275”.  
1”  
0.275”  
43  
Download from Www.Somanuals.com. All Manuals Search And Download.  
APPENDIX C: PHOENIX AND EN3 CABLE ASSEMBLY  
2. Insert the five exposed conductors into the five cable holes in the Phoenix connector using the following wiring scheme.  
Pin #1 Black  
Pin #2 Red  
48 V DC (–)  
48 V DC (+)  
Pin #3 Unshielded Audio shield  
Pin #4 Blue  
Pin #5 White  
Audio (–)  
Audio (+)  
Side (cable attached)  
Connector side up  
Phoenix 5-Pin Female Cable Mount Connector  
3. Secure the conductors by tightening the five screws in the Phoenix conductor.  
Tighten screws  
4. Disassemble the EN3 5-pin female connector and feed one end of the cable through the boot, cable clamp housing, and  
coupling ring.  
Boot  
Coupling ring  
Cable clamp  
housing  
Cord connector  
Disassembled EN3 5-Pin Female Cable Mount Connector  
5. If the EN3 end of the cable has not been stripped, strip the outer shielding 1” and then strip the black, red, blue, and  
white wires .275”.  
44  
Download from Www.Somanuals.com. All Manuals Search And Download.  
MM-10 OPERATING INSTRUCTIONS  
6. Solder the five exposed conductors to the five pins on the EN3 cord connector using the following wiring scheme.  
Dimple identifies Pin #1  
Pin #5, White,  
audio (+)  
Pin #5, White,  
audio (+)  
Pin #1, Black,  
48 V DC (–)  
Pin #2, Red,  
48 V DC (+)  
Pin #4, Blue,  
audio (–)  
Pin #4, Blue,  
audio (–)  
REAR  
FRONT  
Pin #3, Unshielded,  
audio shield  
Pin Destinations for EN3 5-Pin Female Cable Mount Connector  
7. Reassemble the EN3 5-pin female connector:  
Align the coupling ring’s side notches with the cord connector’s side notches and slide the couple ring onto the cord  
connector.  
Carefully insert the end of the cable clamp housing into the cord connector until it locks into place. Snap the cable  
clamps in the cable clamp housing into their compartments.  
Slide the boot forward so it covers the cable clamp housing completely.  
ASSEMBLING PHOENIX-TO-PHOENIX LOUDSPEAKER CABLES  
When connecting MM-10XP loudspeakers equipped with Phoenix connectors to the MPS-488HPp power supply, you need  
a Phoenix 5-pin female to Phoenix 5-pin female cable. The following procedure documents how to assemble this cable.  
Assembled Phoenix-to-Phoenix Cable  
To assemble a Phoenix-to-Phoenix cable:  
1. If the cable has not yet been stripped, strip one end of the cable. Strip the outer shielding by 1” and then strip the black,  
red, blue, and white wires by .275”.  
1”  
0.275”  
45  
Download from Www.Somanuals.com. All Manuals Search And Download.  
APPENDIX C: PHOENIX AND EN3 CABLE ASSEMBLY  
2. Insert the five exposed conductors, from one end of the cable, into the five cable holes in one of the Phoenix connectors.  
Use the following wiring scheme.  
Pin #1 Black  
Pin #2 Red  
Pin #3 Shield  
Pin #4 Blue  
Pin #5 White  
48 V DC (–)  
48 V DC (+)  
Audio shield  
Audio (–)  
Audio (+)  
Side (cable attached)  
Connector side up  
Phoenix 5-Pin Female Cable Mount Connector  
3. Secure the conductors by tightening the five screws in the Phoenix connector.  
Tighten screws  
4. Repeat the previous steps and attach the other end of the cable to the other Phoenix connector.  
5. Verify the wiring polarity is correct for both connectors.  
46  
Download from Www.Somanuals.com. All Manuals Search And Download.  
APPENDIX D: SPECIFICATIONS  
MM-10 SPECIFICATIONS (ALL MODELS)  
MM-10 Specifications (All Models)  
ACOUSTICAL  
Operating Frequency Range  
33 Hz – 228 Hz  
Note: Recommended maximum operating frequency range. Response depends on loading condi-  
tions and room acoustics.  
Frequency Response  
35 Hz – 208 Hz 4 dB  
Note: Free-field, measured with 1/3rd octave resolution at 4 meters.  
Phase Response  
38 Hz – 138 Hz 45°  
Maximum Peak SPL  
123 dB  
Note: Measured with music referred to 1 meter.  
Dynamic Range  
Coverage  
< 100 dB  
360°  
TRANSDUCER  
Type  
10" cone driver with neodymium magnet  
Nominal Impedance  
Voice Coil Size  
Power Handling  
4 Ω  
2”  
400 W (AES)  
Note: Measured under AES standards: transducer driven continuously for two hours with a band-  
limited noise signal having a 6 dB peak-average ratio.  
AUDIO INPUT  
Type  
Differential, electronically balanced  
5 V DC  
Maximum Common Mode Range  
Input Impedance  
DC Blocking  
10 kΩ electronically balanced  
4.8 Hz high pass  
CMRR  
< –60 dB, typically < –72 dB (200 Hz – 3 kHz)  
RF Filter  
Common mode: 616 kHz  
Differential mode: 616 kHz  
Nominal Input Sensitivity  
Input Level  
–2.0 dBV (0.8 V rms, 1.1 V peak) continuous is typically the onset of limiting for noise and music  
Audio source must be capable of producing +16 dBV (6.3 V rms, 9.0 V peak) into 600 Ω to produce  
the maximum peak SPL over the operating bandwidth of the loudspeaker  
AMPLIFIER  
Amplifier Type  
Output Power  
Class D  
220 W  
Note: Wattage rating based on the maximum unclipped burst sine-wave rms voltage the amplifier  
will produce into the nominal load impedance: 30 V rms (42 V peak) into 4 ohms.  
Total Output  
THD, IM TIM  
Load Capacity  
Cooling  
440 W peak  
< .02%  
4 Ω  
Convection  
47  
Download from Www.Somanuals.com. All Manuals Search And Download.  
 
APPENDIX D: SPECIFICATIONS  
MM-10 Specifications (All Models)  
PHYSICAL  
Enclosure  
Finish  
Multi-ply hardwood  
Black textured  
Protective Grille  
Mounting  
Hex-stamped steel with black mesh screen  
Top and side nut plates available with 3/8”or M10 threads. MUB-MM10 U-bracket mounts the sub-  
woofer on walls and ceilings at adjustable angles.  
Dimensions  
19” W x 11” H x 12” D  
(483 mm x 279 mm x 305 mm)  
Weight  
27 lbs (12.25 kg)  
ENVIRONMENTAL  
Operating Temperature  
Non Operating Temperature  
Humidity  
0° C to +45° C  
<–40° C or >+75° C  
To 95% at 35° C  
Operating Altitude  
Non operating Altitude  
Shock  
To 4600 m (15,000 ft)  
To 95% at 35° C  
30 g 11 msec half-sine on each of 6 sides  
10 Hz – 55 Hz (0.010 m peak-to-peak excursion)  
Vibration  
MM-10XP Specifications  
MM-10XP Specifications  
MM-10XP REAR PANEL  
Audio/Power Connector  
Phoenix 5-pin male or EN3 5-pin male  
(two pins for DC power, three pins for balanced audio)  
Wiring  
Pin 1: DC power negative (–)  
Pin 2: DC power positive (+)  
Pin 3: Balanced audio shield, chassis/earth  
Pin 4: Balanced audio (–)  
Pin 5: Balanced audio (+)  
Input Polarity Switch  
LED  
Reverses audio input polarity between pins 4 and 5  
Displays loudspeaker status  
MM-10XP DC POWER  
Safety Agency Rated  
Operating Range  
48 V DC  
Note: Tolerates voltage drops up to 30% with long cable runs.  
MM-10XP Current Draw  
Note: At 48 V DC.  
0.16 A rms  
Idle Current  
Maximum Long-Term  
Continuous Current  
0.90 A rms  
Burst Current  
2.5 A rms  
Ultimate Short-Term  
Peak Current  
3.0 A peak  
Inrush Current  
< 7.0 A peak  
48  
Download from Www.Somanuals.com. All Manuals Search And Download.  
MM-10 OPERATING INSTRUCTIONS  
MM-10AC Specifications  
MM-10AC Specifications  
MM-10AC REAR PANEL  
Audio Connectors  
XLR female input with XLR male loop output  
Pin 1: Chassis/earth through 220 kΩ, 1000 pF, 15 V clamp network to provide virtual ground lift at  
audio frequencies  
Pin 2: Signal +  
Pin 3: Signal –  
Case: Earth ground and chassis  
Input Polarity Switch  
AC Power Connectors  
LED  
Reverses audio input polarity between pins 2 and 3  
PowerCon with loop output  
Displays loudspeaker status  
MM-10AC AC POWER  
Voltage Selection  
Automatic  
Safety Agency Rated Operating  
Range  
100–240 V AC; 50/60 Hz  
Turn On/Turn Off Points  
90–264 V AC; 50/60 Hz  
Note: No automatic turn-off voltages. Voltages above 265 V AC are fuse protected but may cause permanent damage to the power sup-  
ply. Voltages below 90 V AC may result in intermittent operation.  
MM-10AC Current Draw  
Idle Current  
0.13 A rms (115 V AC); 0.13 A rms (230 V AC); 0.14 A rms (100 V AC)  
0.40 A rms (115 V AC); 0.25 A rms (230 V AC); 0.46 A rms (100 V AC)  
Maximum Long-Term Continuous  
Current  
Burst Current  
0.9 A rms (115 V AC); 0.4 A rms (230 V AC); 1.1 A rms (100 V AC)  
2.0 A peak (115 V AC); 1.4 A peak (230 V AC); 2.3 A peak (100 V AC)  
4.0 A peak (115 V AC); 2.4 A peak (230 V AC); 4.0 A peak (100 V AC)  
Ultimate Short-Term Peak Current  
Inrush Current  
Note: Current draw values for a single MM-10AC. AC Loop Output not used.  
MM-10ACX Specifications  
MM-10ACX Specifications  
MM-10ACX REAR PANEL  
Subwoofer Audio Connector  
XLR female input  
Pin 1: Chassis/earth through 220 kΩ, 1000 pF, 15 V clamp network to provide virtual ground lift at  
audio frequencies  
Pin 2: Signal +  
Pin 3: Signal –  
Case: Earth ground and chassis  
Input Polarity Switch  
Input Select Switch  
Reverses audio input polarity between pins 2 and 3 (subwoofer only)  
Determines whether the subwoofer receives its source signal from the subwoofer input or satellite  
inputs (summed)  
Note: Input Select switch only included on the MM-10ACX model.  
Gain Knob  
Adjusts the subwoofer signal from completely attenuated to +10 dB  
Note: Gain knob only included on the MM-10ACX model.  
AC Power Connectors  
PowerCon with loop output  
49  
Download from Www.Somanuals.com. All Manuals Search And Download.  
APPENDIX D: SPECIFICATIONS  
MM-10ACX Specifications  
Satellite Loudspeaker Connectors  
Two XLR female inputs  
Two Phoenix 5-pin male or EN3 5-pin female outputs  
(two pins for DC power, there pins for balanced audio)  
Note: Satellite loudspeaker connectors only included on the MM-10ACX model.  
LED  
Displays loudspeaker status  
MM-10ACX AC POWER  
Voltage Selection  
Automatic  
Safety Agency Rated Operating  
Range  
100–240 V AC; 50/60 Hz  
Turn On/Turn Off Points  
90–264 V AC; 50/60 Hz  
Note: No automatic turn-off voltages. Voltages above 265 V AC are fuse protected but may cause permanent damage to the power sup-  
ply. Voltages below 90 V AC may result in intermittent operation.  
MM-10ACX Current Draw (Subwoofer Only)  
Idle Current  
0.21 A rms (115 V AC); 0.20 A rms (230 V AC); 0.23 A rms (100 V AC)  
0.48 A rms (115 V AC); 0.31 A rms (230 V AC); 0.55 A rms (100 V AC)  
Maximum Long-Term Continuous  
Current  
Burst Current  
1.1 A rms (115 V AC); 0.6 A rms (230 V AC); 1.3 A rms (100 V AC)  
2.2 A peak (115 V AC); 1.6 A peak (230 V AC); 2.5 A peak (100 V AC)  
6.6 A peak (115 V AC); 3.7 A peak (230 V AC); 7.2 A peak (100 V AC)  
Ultimate Short-Term Peak Current  
Inrush Current  
Note: Current draw values for one MM-10ACX with no satellite loudspeakers connected. AC Loop Output not used.  
MM-10ACX Current Draw (with Two MM-4XPs)  
Idle Current  
0.32 A rms (115 V AC); 0.26 A rms (230 V AC); 0.36 A rms (100 V AC)  
0.90 A rms (115 V AC); 0.51 A rms (230 V AC); 1.02 A rms (100 V AC)  
Maximum Long-Term Continuous  
Current  
Burst Current  
2.5 A rms (115 V AC); 1.3 A rms (230 V AC); 3.0 A rms (100 V AC)  
4.5 A peak (115 V AC); 2.8 A peak (230 V AC); 5.0 A peak (100 V AC)  
7.6 A peak (115 V AC); 4.4 A peak (230 V AC); 8.4 A peak (100 V AC)  
Ultimate Short-Term Peak Current  
Inrush Current  
Note: Current draw values for one MM-10ACX with two MM-4XP satellite loudspeakers connected. AC Loop Output not used.  
MM-10 COMPLIANCE  
C
US  
(Pending)  
(Pending)  
50  
Download from Www.Somanuals.com. All Manuals Search And Download.  
MM-10 OPERATING INSTRUCTIONS  
MM-10 DIMENSIONS  
6.50  
[165 mm]  
5.00  
[127 mm]  
12.00  
[305 mm]  
19.00  
[483 mm]  
11.00  
[279 mm]  
MM-10 Dimensions  
51  
Download from Www.Somanuals.com. All Manuals Search And Download.  
APPENDIX D: SPECIFICATIONS  
52  
Download from Www.Somanuals.com. All Manuals Search And Download.  
Download from Www.Somanuals.com. All Manuals Search And Download.  
Meyer Sound Laboratories Inc.  
2832 San Pablo Avenue  
Berkeley, CA 94702  
T: +1 510 486.1166  
F: +1 510 486.8356  
© 2010  
Meyer Sound. All rights reserved.  
MM-10 Operating Instructions, PN 05.199.005.01 A  
Download from Www.Somanuals.com. All Manuals Search And Download.  

Land Pride Lawn Mower LR2584 User Manual
Mackie Music Mixer 1220I User Manual
Magnavox VCR MVR650 User Manual
Makita Cordless Saw 5620D User Manual
Manitowoc Ice Ice Maker 7625573 User Manual
Manley Labs Car Amplifier 300B User Manual
Maytag Dishwasher MDB8859AWB2 User Manual
Meade Telescope LX80 User Manual
Melissa Microwave Oven 753 097 User Manual
Metrologic Instruments Scanner IS4920 User Manual