INDUSTRIAL SERIES
OPERATING INSTRUCTIONS
MM-10 Miniature Subwoofer
MPS-488HP Power Supply
Keep these important operating instructions.
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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
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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
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CONTENTS
v
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CONTENTS
vi
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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
Email: [email protected]
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
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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
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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
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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
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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
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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
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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
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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
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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
and Cable Requirements” on page 11. For informa-
tion on cables and cable accessories available from
Meyer Sound, see Appendix A, “MM-10 Accesso-
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
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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
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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
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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
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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
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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
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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 (+)
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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
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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
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CHAPTER 4: THE MM-10AC SUBWOOFER
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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
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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
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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
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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
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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-
ries available from Meyer Sound, see Appendix A, “MM-10
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
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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
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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
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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
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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.
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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APPENDIX D: SPECIFICATIONS
52
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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
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