M1224FX
User Guide
and Reference Manual
6122 S. Eastern Ave
Los Angeles, CA 90040
6/08
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M1224FX
ELECTRiCaL SaFETY PRECaUTiONS
The serial and model number for this unit is
located on the rear panel. Please write down
the numbers here and retain for future refer-
ence.
WARNINg: TO PREVENT FIRE OR ELECTRIC
SHOCk HAZARD, DO NOT EXPOSE THIS
UNIT TO RAIN, LIqUIDS, OR MOISTURE
Model No._____________________________
Serial No._____________________________
CAUTION: TO PREVENT ELECTRIC SHOCk
DO NOT USE THIS (POLARIZED) PLUg
WITH AN EXTENSION CORD, RECEPTACLE,
OR OTHER TYPE OF ELECTRICAL OUTLET
UNLESS THE WIDE bLADES CAN bE
CAREFULLY INSERTED INTO A MATCHINg
WIDE SLOT.
Purchase Notes:
Date of Purchase_______________________
Dealer Name__________________________
Dealer Address_________________________
ATTENTION: POUR PREVENIR LES CHOCS
ELECTRIqUES NE PAS UTILISER CETTE
FICHE POLARISEE AVEC UN PROLON-
gATEUR, UNE PRISE DE COURANT OU
UNE AUTRE SORTIE DE COURANT, SAUF
SI LES LAMES PEUVENT ETRE INSEREES A
FOND SANS EN LAISSER AUCUNE PARTIE A
DECOUVERT.
_____________________________________
_____________________________________
Dealer Phone__________________________
NOTE: This product satisfies FCC
regulations when shielded cables
and connectors are used to con-
nect the unit to other equipment.
To prevent electromagnetic inter-
ference with electrical appliances
such as radios and televisions, use
shielded cables and connectors
for connections.
©American Audio®
-
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M1224FX Instruction Manual Page 3
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M1224FX
ELECTRiCaL SaFETY PRECaUTiONS
ELECTRICAL PRECAUTIONS
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
The lightning flash with arrowhead symbol, within an
equilateral triangle, is intended to alert the user to the
presence of uninsulated "dangerous voltage" within the
product'senclosurethatmaybeofsufficientmagnitude
to constitute a risk of electric shock to persons.
The exclamation point within an equilateral triangle is
intended to alert the user to the presence of important
operating and maintenance (servicing) instructions in
the literature accompanying the appliance.
CAUTION: TO REDUCE THE RISK OF ELECTRIC
SHOCK, DO NOT REMOVE THE COVER (OR BACK).
THERE ARE NO USER SERVICEABLE PARTS
INSIDE REFER SERVICE TO YOUR AUTHORIZED
AMERICAN AUDIO® SERVICE TECHNICIAN.
IMPORTANT SAFETY INSTRUCTIONS
OBJECT aNd LiQUid ENTRY - Never push objects of
REad iNSTRUCTiONS — All the safety and operating
GROUNdiNG OR POLaRiZaTiON
instructions should be read before the product is
operated.
•
Ifthisproductisequippedwithapolarizedalternating
current line plug (a plug having one blade wider than
theother), itwillfitintotheoutlet onlyoneway. This
isasafetyfeature.Ifyouareunabletoinserttheplug
fullyintotheoutlet, tryreversingtheplug. Iftheplug
should still fail to fit, contact your electrician to
replace your obsolete outlet. Do not defeat the
safety purpose of the polarized plug.
any kind into this product through openings as they
may touch dangerous voltage points or short-out
parts that could result in a fire or electric shock.
Never spill liquid of any kind on the product.
RETaiN iNSTRUCTiONS — The safety and operating
instructionsshouldberetainedforfuturereference.
HEEd WaRNiNGS — All warnings on the product and
in the operating instructions should be adhered to.
FOLLOW iNSTRUCTiONS — All operating and use
instructions should be followed.
SERviCiNG — Do not attempt to service this product
yourself as opening or removing covers may expose
you to dangerous voltage or other hazards. Refer all
servicing to qualified service personnel.
CLEaNiNG — The product should be cleaned only with
a polishing cloth or a soft dry cloth. Never clean with
furniture wax, benzine, insecticides or other volatile
liquids since they may corrode the cabinet.
•
If this product is equipped with
a
three-wire
daMaGEREQUiRiNGSERviCE - Unplugthisproduct
from the wall outlet and refer servicing to qualified
service personnel under the following conditions:
groundingtypeplug,aplughavingathird(grounding)
pin, itwillonlyfitintoagroundingtypepoweroutlet.
Thisisasafetyfeature.Ifyouareunabletoinsertthe
plug into the outlet, contact your electrician to
replace your obsolete outlet. Do not defeat the
safety purpose of the grounding type plug.
•
•
When the power-supply cord or plug is damaged.
If liquid has been spilled, or objects have fallen into
the product.
aTTaCHMENTS
—
Do not use attachments not
recommendedbytheproductmanufacturerasthey
may cause hazards.
•
•
If the product has been exposed to rain or water.
Iftheproductdoesnotoperatenormallybyfollowing
theoperatinginstructions.Adjustonlythosecontrols
that are covered by the operating instructions as an
improper adjustment of other controls may result in
damage and will often require extensive work by a
qualified technician to restore the product to its
normal operation.
WaTER aNd MOiSTURE — Do not use this product
near water — for example, near a bathtub, wash
bowl,kitchensink,orlaundrytub;inawetbasement;
or near a swimming pool; and the like.
aCCESSORiES — Do not place this product on an
unstable cart, stand, tripod, bracket, or table. The
product may fall, causing serious injury to a child or
adult, and serious damage to the product. Use only
POWER-CORd PROTECTiON - Power-supply cords
should be routed so that they are not likely to be
walked on or pinched by items placed upon or
against them, paying particular attention to cords at
plugs,conveniencereceptacles,andthepointwhere
they exit from the product.
OUTdOOR aNTENNa GROUNdiNG — If an outside
antennaorcablesystemisconnectedtotheproduct,
be sure the antenna or cable system is grounded so
astoprovidesomeprotectionagainstvoltagesurges
andbuilt-upstaticcharges.Article810oftheNational
ElectricalCode,ANSI/NFPA70,providesinformation
with regard to proper grounding of the mast and
supporting structure, grounding of the lead-in wire
to an antenna discharge unit, size of grounding
conductors, location of antenna-discharge unit,
connection to grounding electrodes, and
requirementsforthegroundingelectrode.SeeFigure
A.
LiGHTNiNG — For added protection for this product
duringalightningstorm,orwhenitisleftunattended
and unused for long periods of time, unplug it from
the wall outlet and disconnect the antenna or cable
system. This will prevent damage to the product
due to lightning and power-line surges.
POWER LiNES —An outside antenna system should
notbelocatedinthevicinityofoverheadpowerlines
or other electric light or power circuits, or where it
can fall into such power lines or circuits. When
installing an outside antenna system, extreme care
should be taken to keep from touching such power
lines or circuits as contact with them might be fatal.
OvERLOadiNG — Do not overload wall outlets,
extensioncords,orintegralconveniencereceptacles
as this can result in a risk of fire or electric shock.
•
•
If the product has been dropped or damaged in any
way.
When the product exhibits a distinct change in
with
a
cart, stand, tripod, bracket, or table
recommended by the manufacturer, or sold with
the product. Any mounting of the product should
follow the manufacturer’s instructions, and should
use a mounting accessory recommended by the
manufacturer.
performance — this indicates a need for service.
REPLaCEMENT PaRTS -- When replacement parts
arerequired,besuretheservicetechnicianhasused
replacement parts specified by the manufacturer or
have the same characteristics as the original part.
Unauthorizedsubstitutionsmayresultinfire,electric
shock, or other hazards.
SaFETY CHECk - Upon completion of any service or
repairs to this product, ask the service technician to
performsafetycheckstodeterminethattheproduct
is in proper operating condition.
CaRT — A product and cart combination should be
moved with care. Quick stops, excessive force, and
uneven surfaces may cause the product and cart
combination to overturn.
WaLL OR CEiLiNG MOUNTiNG — The product should
not be mounted to a wall or ceiling.
HEaT —The product should be situated away from heat
sources such as radiators, heat registers, stoves, or
other products (including amplifiers) that produce
heat.
vENTiLaTiON — Slots and openings in the cabinet are
provided for ventilation and to ensure reliable
operation of the product and to protect it from
overheating, and these openings must not be
blocked or covered. The openings should never be
blocked by placing the product on a bed, sofa, rug,
or other similar surface. This product should not be
placed in a built-in installation such as a bookcase or
rack unless proper ventilation is provided or the
manufacturer’s instructions have been adhered to.
POWER SOURCES —This product should be operated
only from the type of power source indicated on the
marking label. If you are not sure of the type of
power supply to your home, consult your product
dealer or local power company.
ANTENNA
LEAD IN
WIRE
GROUND
CLAMP
ANTENNA
DISCHARGE UNIT
(NEC SECTION 810-20)
LOCaTiON – The appliance should be installed in a
stable location.
NONUSE PERiOdS – The power cord of the appliance
should be unplugged from the outlet when left un-
used for a long period of time.
ELECTRIC
SERVICE
EQUIPMENT
GROUNDING CONDUCTORS
(NEC SECTION 810-21)
GROUND CLAMPS
POWER SERVICE GROUNDING
ELECTRODE SYSTEM
(NEC ART 250, PART H)
Fig. A
NEC — NATIONAL ELECTRICAL CODE
©American Audio®
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M1224FX Instruction Manual Page 4
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M1224FX
SaFETY PRECaUTiONS
8. Never plug this mixer in to a dimmer pack.
1. For adult use only - keep out of the reach
of children.
9. Do not let insecticides, benzene, or thinner
come in contact with the surface of the
unit.
2. Water and Moisture - The player should not
be used near water - for example, near a bath
tub, kitchen sink, laundry tub, in a wet base-
ment or near a swimming pool, etc. Do not
spill water or other liquids in to or on to your
mixer.
10. This unit is intended for indoor use only, use
of this product outdoors voids all warranties.
11. Always mount this unit in safe and stable
matter.
3. Ventilation - The Mixer should be situated
so that its location or position does not inter-
fere with its proper ventilation. For example,
the Mixer should not be situated on a bed,
sofa, rug, or similar surface that may block the
ventilation openings; or, placed in a built-in
installation, such as a bookcase or cabinet that
may impede the flow of air through the ventila-
tion openings.
12. Disconnect from main power before making
any type of connection.
13. Cleaning - The mixer should be cleaned
only as recommended by the manufacturer.
Use a soft cloth to wipe down the outside of the
unit. For stubborn stains moisten a soft cloth
with glass cleaner or other mild detergent to
wipe away any stains. Use a soft cloth to wipe
any residual cleaner. Never use volatile clean-
ers such as benzene, solvent, or thinner to clean
your unit, these cleaners will damage the units
surface.
4. Heat - The Mixer should be situated away
from heat sources such as radiators, heat reg-
isters, stoves, or other appliances (including
amplifiers) that produce heat.
14. Handle the power supply cord carefully. Do
not damage or deform; it may cause electric
shock or malfunction when used. Hold plug
attachment when removing from wall outlet.
Do not pull on the cord.
5. Power Sources - The Mixer should be con-
nected to a power supply (wall outlet) only of
the type described in the operating instructions
or as marked on the Mixer.
6. Servicing -The user should not attempt to
service the Mixer beyond that described in the
operating instructions. There are no user ser-
viceable parts inside. All other servicing should
be referred to qualified service personnel. The
Player should be serviced by qualified service
personnel when:
15. To avoid electric shock, do not open the
top cover when the unit is plugged in. If prob-
lems occur with the unit, call American Audio®
customer support.
16. Do not place metal objects or spill any liq-
uids inside or on the mixer. Electric shock or
malfunction may occur.
A. The power-supply cord or the plug has
been damaged.
b. Objects have fallen, or liquid has been
spilled into the Mixer.
C. The Mixer has been exposed to rain
or water.
D. The Mixer does not appear to operate
normally or exhibits a marked change
in performance.
17. Power Cord Protection - Power supply
cords should be routed so that they are not
likely to be walked on or pinched by items
placed upon or against them, paying particular
attention to cords at plugs, convenience recep-
tacles, and the point where they exit from the
mixer. Route your power cord out of the way of
foot traffic.
7. Never disassemble or modify your unit in
any way, doing so will void your manufactures
warranty.
18. Always have the trim controls set to their
lowest level during initial power-up to prevent
speaker damage.
©American Audio®
-
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M1224FX Instruction Manual Page 5
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M1224FX
iNTROdUCTiON
Introductions: Congratulations and thank you for purchasing the American Audio® M1224FX mixing
console. This mixing console is a representation of American Audio’s continuing commitment to pro-
duce the best and highest quality audio products possible at an affordable price. Please read and
understand this manual completely before attempting to operate your new mixer. Please carefully read
and understand the instructions in this manual thoroughly before attempting to operate this unit. These
instructions contain important safety information regarding the use and maintenance of this unit. Take
special care to follow all warning symbols and labels both on the unit and printed in this manual. Also,
Please keep this manual with the unit, for future reference.
Customer Support:
American Audio® provides a toll free customer support line, to provide set up help and answer any
question should you encounter problems during your initial set up or operation. You may also visit us
through Friday 9:00 a.m. to 5:30 p.m. Pacific Standard Time.
Voice:
Fax:
(800) 322-6337
(323) 582-2941
E-mail:
Caution! There are no user serviceable parts inside this mixer. Do not attempt any repairs yourself,
without being instructed to do so by an authorized American Audio service technician. Doing so will
void your manufactures warranty. In the unlikely event your mixer may require service, please contact
American Audio® customer support.
Do not discard the packing carton in the trash. Please recycle when ever possible.
M1224FX
SET-UP PRECaUTiONS
Please be sure to make any connections before plugging the mixer in to an electrical outlet. All fader
and volume controls should be set to zero or minimum position, before the mixer is switched on. If the
mixer has been exposed to drastic temperature fluctuation (e.g. after transportation), do not switch on
the mixer immediately. The arising condensation of water might damage your device. Leave the device
switched off until it has reached room temperature.
Operating Determinations:
• When installing this mixer, please make sure that the device is not exposed or will not be
exposed to extreme heat, moisture or dust!
• Do not operate the mixer in extremely hot (more than 30°/100°F) or extremely cold (less than
5°C/40°F) surroundings.
• keep the unit out of direct sunlight and away from heaters.
• Operate the mixer only after becoming familiar with its functions. Do not permit operation by
persons not qualified for operating the mixer. Most damages are the result of unprofessional
operation!
• Do not attempt to operate this mixer if the power cord has been frayed or damaged.
• Disconnect from main power before making any type of connection.
• Do not attempt to operate this mixer, if it becomes damaged in any way.
• Never operate this mixer when it’s covers are removed.
• To reduce the risk of electrical shock or fire, do not expose this mixer to rain or moisture.
• This mixer is intended for indoor use only, use of this product outdoors voids all warranties.
• During long periods of non-use, disconnect the mixer’s main power.
©American Audio®
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M1224FX
UNPaCkiNG
Every M1224FX has been thoroughly tested and has been shipped in perfect operating condition.
Carefully check the shipping carton for damage that may have occurred during shipping. If the carton
appears to be damaged, carefully inspect your mixer for any damage and be sure all equipment neces-
sary to operate the mixer has arrived intact. In the event damage has been found or parts are missing,
please contact our toll free customer support number for further instructions. Please do not return the
mixer to your dealer without first contacting customer support.
M1224FX
FRONT & REaR PaNEL
©American Audio®
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M1224FX
CHaNNEL CONTROLS aNd FUNCTiONS
CHANNEL CONTROL SECTION
MONO
MONO/STEREO
COMbO
STEREO
1
2
3
4
5
6
7
8
9
10
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M1224FX
CHaNNEL CONTROLS aNd FUNCTiONS cont.
CHANNEL CONTROL SECTION:
1. PEAK LED INDICATORS & TRIm CONTROL -
PEAK INDICATORS - These LED indicators will “light” when the input signal reaches 5db below the
channel’s clipping point. If the LED “lights” more then usual, you should use the TRIM CONTROL to
decrease the input level of the channel. If this does not work, reduce the output level of the connected
source.
TRIm CONTROL - This adjustment is used to adjust the audio source signal input gain for a channel.
The best S/N and dynamic range balance will be reached if you adjust the TRIM CONTROL so that the
PEAk INDICATORS “light” occasionally.
Channel Sensitivity”
MIC input sensitivity is between +6db and -50db.
Line input sensitivity is between +14db and -30db.
The Mono/Stereo Combo input channel sensitivity is between +20db and -20db.
2. HPF (HIGH PASS FILTER) BUTTON - This button toggles the HPF (Hight Pass Filter) on or off. To
turn the HPF on press the button in. The HPF cuts frequencies below 75Hz.
3. EQUALIZER - Please see the chart below for the max. Boost/Cut for each control.
CHANNELHIGHCONTROL-Thisknobisusedtoadjustthehigh(treble)frequencylevelsofthechannel.
Turningtheknob inacounter-clockwisedirectionwilldecreasetheamountoftrebleappliedtoachannel
signal,turningtheknobinaclockwisedirectionwillincreasetheamountoftrebleappliedtoachannelsignal.
CHANNEL mID CONTROL - This knob is used to adjust the midrange levels of the channel. Turning
the knob in a counter-clockwise direction will decrease the amount of midrange applied to a channel
signal, turning the knob in a clockwise direction will increase the amount of midrange applied to a
channel signal.
CHANNEL LOw CONTROL - This knob is used to adjust the low frequency levels of the chan-
nel. Turning the knob in a counter-clockwise direction will decrease the amount of bass applied to a
channel signal, turning the knob in a clockwise direction will increase the amount of bass applied to a
channel signal.
MAX.
BOOST/CUT
CONTROL
FREQUENCY
TYPE
HIGH
MID
±15dB
12kHz
2.5kHz
80Hz
Shelving
Peaking
Shelving
±12dB
LOW
±15dB
4. AUX CONTROLS - The AUX knobs control the signal level that the channel sends to AUX bus.
5. PRE/POST BUTTON - This button determines if the AUX signal is Pre Fader (signal level is not
affected by fader position) or Post Fader (signnal level is affected by the fader position).
6. EFX CONTROL - These knobs control the signal levels sent to the EFX bus. The channel signals
mixed by this bus have their overall level set by the MASTER EFX SEND control to the EFX jack located
on the front top panel. Since the control is place after the channel fader, the signal level will be
affected by the channel fader’s setting.
NOTE: The Effect bus signal is also fed into the internal DSP (digital signal processor).
©American Audio®
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M1224FX
CHaNNEL CONTROLS aNd FUNCTiONS cont.
7. PAN/BALANCE CONTROL -
PAN (mono Control) - This control pans the channel signal across the master L and R buses, there-
fore determining the ideal position of the sound from that channel.
EXAmPLE: If the PAN control is set all the way to the left, the sound from that channel will only be
projected from the left speaker only. Same goes for the control being set all the way to the right, only
from the right speaker.
BALANCE (Stereo Control) - This control lets you adjust the balance of the L/R position, of the stereo
input signal. Turning this knob to the left moves the source signal towards the MAIN MIX L bus, turning
the knob to the right sends the signal towards the MAIN MIX R bus.
8. mUTE/ALT 3/4 BUTTON - When the corresponding channels MUTE/ALT 3/4 button is not active
(depressed) the channel output will be sent to the ALT 3/4 output, and not the MAIN L/R output. The
ALT 3/4 bus gives you a second independent stereo sub mix with its own sub master stereo fader.
9. PFL BUTTONS - This button allows you to monitor the PRE FADER LEVEL input signal through
headphones or the control room outputs. When the button is NOT pressed the channel signal will be
sent to the PFL bus.
10. CHANNEL FADERS - Thes faders are channel’s main level control. These fader’s control the
signal level sent from the channel to the master mixing, group outs, and effect buses. The settings of
the input channel faders affect the mix or the sound level balance between the instruments or other
sources connected to the inputs. When a channel is not being used, the fader should be set at the
minimum position to prevent any unwanted noise added to the main signal.
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M1224FX
MaiN CONTROLS aNd FUNCTiONS
MAIN CONTROL SECTION
11
12
21
22
13
14
23
15
Effects List
16
17
24
25
26
18
19
20
27
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M1224FX
MaiN CONTROLS aNd FUNCTiONS cont.
mAIN CONTROL SECTION:
11. DSP PROGRAm DISPLAY - This displays shows the number of the selected effect. Please see the
effect list located on the MAIN CONTROL SECTION of the mixing console.
12. DSP PROGRAm SELECT KNOB - The program knob wil allow you to select one of the 100 built-in
digital effects. This control board has a 24 bit digital high quality effect processor.
13. AUX PRE CONTROL - Use this control to adjust the signal level sent from the internal digital effect
.
to the AUX bus
14. STEREO RETURN CONTROL -
AUX RETURN - Use the corresponding control knobs to adjust the signal level of the mixed L/R signal
sent from the RETURN jack (L & R MONO) to the AUX bus.
MAIN CONTROL - Use the corresponding control knobs to adjust the signal level of the mixed L/R
signal sent from the RETURN jack (L & R MONO) to the MAIN L/R bus.
15. mASTER SEND CONTROLS -
AUX CONTROL kNObS - Use this control knob to adjust the signal level sent to the AUX output
jack.
MASTER EFFECT CONTROLS - Use this knob to adjust the signal level of the EFFECT bus sent to the
EFFECT output jack.
16. TAPE IN CONTROL - This knob controls the playback signal level from the component that is
connected to the TAPE IN RCA JACkS located on at the top panel of the mixing board.
17. DSP ON/OFF BUTTON - This button turns the internal effect program on/off.
18. PFL BUTTON - Pressing this button “In” will allow you to send the effect signal to the PFL bus.
19. EFX RTN FADER - With this fader you can adjust the signal level sent from the digital effect to
the MAIN bus.
20. ALT 3/4 FADER - With this fader you can adjust the final combined stereo signal level that is sent
to the ALT 3/4 output jacks.
21. POwER INDICATOR - This indicator will light when mixer power switch is turned on.
22. PHANTOm POwER BUTTON - When this button is pressed “In”, the mixer will supply power to
all channels the provide XLR MIC input jacks. Use this function when using one or more condensor
microphones.
Note: when this function is active, the mixer supplies DC +48V power to pins 2 and 3 of all XLR
type mIC input jacks.
• Leave this switch off if you do not need phantom power.
• When you turn this function on, make sure that only condenser MICs are connected to the XLR
input jacks. Devices other then condensor MICs may be damaged if connected to the phantom
power supply.
• The switch may be left on when connecting to balanced dynamic microphones.
• To avoid damage to speakers, be sure to turn off the amplifier (on powered speakers) before turn-
ing this function on or off. Also, to avoid loud noises that could cause hearing loss or device dam-
age, we recommend that you turn all out controls (MAIN, master fader, ALT 3/4 fader etc.) to the
minimum settings before activating this function.
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M1224FX
MaiN CONTROLS aNd FUNCTiONS cont.
23. LEVEL mETER - This LED displays the signal level of the selected LEVEL METER SIgNAL bUTTON.
When the meter lights up RED then the output is hitting the clipping level.
24. CONTROL ROOm/HEADPHONE CONTROL - This controls the signal level that is sent to the
CONTROL ROOM JACkS or HEADPHONE JACk.
25. LEVEL-mETER SIGNAL BUTTONS - Use these buttons to select the signal that is sent to the
CONTROL ROOM outputs and/or HEADPHONE output. The ouput level will be shown in the LEVEL
METER. Please see the illustration below to see how the button settings correspond to the signal
selection.
Switch
PFL
TAPE IN ALT3 / 4
Signal
ON
PFL
ON
TAPE IN
ALT3/4
MAIN
C-R OUT
&
PHONES
ON
OFF
OFF
OFF
26. TO mAIN BUTTON - When this button is pressed “In” (On), the mixer will send the signal from the
ALT 3/4 to the MAIN L/R outputs.
27. mAIN L/R FADERS - This fader adjusts the final signal level sent to the MAIN L/R output.
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M1224FX
iNPUT aNd OUTPUT CONNECTiONS
INPUT AND OUTPUT CONNECTIONS
28
29
30 31
32
33
34
40
39
38 37 36
35
INPUT AND OUTPUT CONNECTIONS:
28. CHANNEL INPUT JACKS -
mIC JACKS - These are balanced 3-pin XLR-type input jacks.
BALANCED LINE IN JACKS - These standard 1/4” TRS phone jack are used for balanced or
unbalanced line level signals. Some examples of line level equipment include most electronic key-
boards, synthesizers, turntables (with appropriate pre-amps), tape decks and line outputs from
other mixers.
29. CHANNEL STEREO INPUT JACKS - These are unbalanced stereo line input jacks. The two
jacks provided are 1/4” and RCA.
30. TAPE INPUT JACKS - These RCA jacks are used to connect a stereo sound source. Use these
jacks when you want to connect a CD, cassette, or DAT, directly to the mixer for monitoring. Use
the TAPE IN CONTROL to adjust the signal level.
31. REC OUT JACKS - These jacks send the PRE FADER signal from the master bus to a tape
deck for recording.
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M1224FX
iNPUT aNd OUTPUT CONNECTiONS cont.
32. FOOT SwITCH JACK - You can connect a foot switch to this jack, and use the foot jack to
toggle the digital effects on/off.
33. ALT 3/4 OUPUT JACKS - These unbalanced 1/4” phone type jacks output the ALT 3/4 signal
to the input of a MTR, external mixer, or other device.
34. CONTROL ROOm OUTPUT JACKS - These stereo 1/4” phone type output jacks send the
mixed signal to a monitoring system. Use the CONTROL ROOM/HEADPHONE CONTROL to adjust
the output signal level. The signal monitored by these jacks is select by the using the LEVEL METER
SIgNAL bUTTONS.
35. HEADPHONE JACK - Use this jack to connect headphones to the mixing board.
NOTE: The signal monitored by these jacks is select by the using the LEVEL METER SIgNAL
bUTTONS, the TAPE IN CONTROL and the PFL bUTTON on the input channels.
36. mAIN L/R OUTPUT JACKS - These jacks deliver a stereo output signal to a amplifier or pow-
ered speakers. You can also use these outputs to send a signal you wish to record. You can control
the signal level control using the MAIN FADER located in the MASTER CONTROL section.
37. AUX OUTPUT JACK - This 1/4” output jack send a signal from the AUX bus to a cue box, effec-
tor, or other monitoring system.
38. EFX OUTPUT JACK - This unbalanced phone output jack sends a signal to an external effect
machine.
39. STEREO RETURN L (mONO) - These are unbalanced 1/4” TRS phone-type line input jacks. The
signal received by these jacks is sent to the MAIN bus and AUX bus. These jacks are
typically used to receive a return signal from an external effector (reverb, delay, etc.)
40. CHANNEL INSERT I/O JACK - These are 1/4” TRS (tip, ring, sleeve) phone jacks that support
bi-directional operation. These input/output jacks are located between the head-amplifier and the
high pass filter. These jacks can be used to independently connect these channels to devices such
as graphic equalizers, compressors, and noise filters.
NOTE: Connection to an I/O jack requires a special separately-sold insertion cable. Please see the
illustration below.
INPUT/OUTPUT (I/O) JACk
Tip:Output(Send to external device)
Sleeve:Ground
Ring:Input(Return from external device)
©American Audio®
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M1224FX
CONNECTORS
- Always use good quality twin screened audio cable. Check for instability at the output.
- Always connect both conductors at both ends, and make sure that the screen is connected only at
one end.
- Do not disconnect the mains earth from each piece of equipment. This is needed to provided both
safety and screen returns to the system star point.
- Equipment which has balanced inputs and outputs may need to be electrically isolated from the
equipment rack and/or other equipment, to avoid earth loops.
It is important to remember that all equipment which is connected to the mains it a potential source
of hum and interference and may radiate both electrostatic or electromagnetic radiation. In addition,
the mains will also act as a carrier for many forms of RF interference generated by electric motors,
air-conditioning units, hyristor light dimmers etc. Unless the earth system is clean, all attempts to
improve hum noise levels will be ineffective. In extreme cases there will be no alternative but to pro-
vide a completely separate and independent ‘technical earth’ to replace the incoming ‘noisy earth’.
However, always consult your local electricity supply authority to ensure that safety regulations are
not being infringed.
American Audio products are manufactured and wired to accept wiring practices used throughout
the world.
balanced XLR connections are wired as described, please see the diagram shown below:
Pin #1 Shield
Pin #2 Positive
Pine #3 Negative
balanced 1/4” TRS connections are wired as described, please see the diagram shown below:
Tip is Positive
Hot (positive)
2
Ring is Negative
Sleeve is Shield
Hot (positive)
Cold (negative)
3
Screen
1
Cold (negative) Sleeve
Balanced Input
Screen
Return
Send
Sleeve
Ring
Insert Points
Tip
Sleeve Ring
Tip
Amp/Line Input
Headphones
3 Pole (Stereo) Jack
Hot (positive)
Cold (negative)
Screen
Sleeve Ring
Tip
Left Signal
Right Signal
Ground
Seeve
Tip
Unbalanced
Input/Output
AUX Send
2 Pole (Mono) Jack
Signal
Ground
©American Audio®
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M1224FX
CONNECTORS
Connector and Cable Configurations
REMOTE DEVICE
DESCRIPTION
REMOTE SIDE OF CABLE
(Connector Type)
CABLE
White(Red)/HIGH
Black/LOW
2
1
2
3
3
A. XLR**
Shield/GND
(XLR)
1
Floating or Balanced
low impedance: most
professional equipment
line in and line out,
microphones.
White(Red)/HIGH
Black/LOW
2
1
T
R
S
3
B.TRS PHONE
Shield/GND
(XLR)
White(Red)/HIGH
Black/LOW
2
1
T
S
Unbalanced
C. STANDARD
PHONE
3
Shield/GND
low impedance: some
professional equipment
and microphones.
(XLR)
White(Red)/HIGH
Black/LOW
2
1
T
S
D. STANDARD
PHONE
3
Shield/GND
Unbalanced
(XLR)
high impedance: most
hi-fi equipment.
White(Black)/HIGH
T
S
S
T
E. SHIELD/GND
PHONE
Unbalanced
Shield/GND
(Standard Phone)
high impedance: most
hi-fi equipment.
Connector and cable configurations are recommended for use with the M 4 bus series. These cables
are based on the use of auxillary equipment that is isolated from the AC power mains.
©American Audio®
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M1224FX
HOME STUdiO SET-UP
SETUP PROCEdURE:
1. before connecting to microphones and instruments, be sure that all devices are turned off. Also
be sure that all of the mixer’s channel fader and master control faders are set all the way down.
2. For each connection, connect one end of the cable to the relevant microphone or instrument and
connect the other end to the appropriate input jack on the mixer.
NOTE: Where an input channel provides both a MIC INPUT jack and a LINE INPUT jack, you
may use either one of these jack but you may not use both at the same time. Please
connect to only one of these jacks on each channel.
3. To avoid causing damage to speaker, power up the devices in the following order: Peripheral
devices mixer power amps (or powered speakers).
NOTE: When shutting the system down, turn off the power in the opposite order: Power amps
(powered speakers) mixer Peripheral devices.
Sound Source(CD,MD,DAT,
Cassette,Video etc.)
PROGRAM
EJECT
STOP
PLAY/PAUSE
LEVEL
POWER
REPEAT
REW
SKIP
FWD
COMPACT DISC PLAYER
MIN
MAX
Master Recorder(MD,DAT.)
PROGRAM
EJECT
STOP
PLAY/PAUSE
LEVEL
POWER
Synthesizer
REPEAT
REW
SKIP
FWD
COMPACT DISC PLAYER
MIN
MAX
MTR
Foot Switch
1
2
3
4
5/6
7/8
9/10
11/12
TAPE IN
REC OUT
MIC
MIC
MIC
MIC
MIC
MIC
LINE
9
LINE 11
FOOT SWITCH
ALT 3/4 OUTPUT
CONTROL ROOM
LINE 10
LINE 12
AUX
LINE
LINE
LINE
LINE
LINE
5
6
LINE
7
8
LINE
9
LINE 11
HEADPHONE
AUX
RETURN
MONO
MONO
MONO
MAIN OUTPUT
INSERT
OUT IN
INSERT
INSERT
INSERT
LINE
LINE
LINE 10
LINE 12
EFX
Microphone
Effector
Effector
Rhythm Machine
Guitar
Powered Monitor
Speakers
©American Audio®
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M1224FX
LivE PERFORMaNCE SET-UP
Monitor Speakers
(Internal)
CD Player
Guitar
CD,Cassette,or
DAT Recorder
Power Amp
Microphone
PRE
Foot Switch
1
2
3
4
5/6
7/8
9/10
11/12
TAPE IN
REC OUT
MIC
MIC
MIC
MIC
MIC
MIC
LINE 9
LINE 11
FOOT SWITCH
ALT 3/4 OUTPUT
CONTROL ROOM
LINE 10
LINE 12
AUX
LINE
LINE
LINE
LINE
LINE 5
LINE 6
LINE 7
LINE 8
LINE 9
LINE 11
HEADPHONE
AUX
RETURN
MONO
MONO
MONO
MAIN OUTPUT
INSERT
INSERT
INSERT
INSERT
LINE 10
LINE 12
EFX
OUT IN
Effector
Effector
Synthesizer
Power Amp
DI
Stage (Internal)
Bass
Main Speakers
(External)
AUX
(PRE
Audience(External)
)
ST
ST
©American Audio®
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M1224FX
EFFECTS LiST
Program
Room
Size
Effect Description
Effect Name
Efx Level
No.(Hex)
00h
01h
02h
03h
04h
05h
06h
07h
08h
09h
10h
11h
12h
13h
14h
15h
16h
17h
18h
19h
20h
21h
22h
23h
24h
25h
26h
27h
28h
29h
30h
31h
32h
33h
34h
35h
36h
37h
38h
39h
40h
41h
42h
43h
44h
45h
46h
47h
48h
Medium Bright Plate
Best Plate
Medium Dark Spring
Short Plate
78.00%
63.00%
13.00%
78.00%
13.00%
100.00%
91.00%
28.00%
100.00%
78.00%
44.00%
35.00%
35.00%
27.00%
21.00%
27.00%
13.00%
21.00%
27.00%
58.00%
78.00%
78.00%
78.00%
26.00%
78.00%
78.00%
78.00%
78.00%
52.00%
63.00%
13.00%
13.00%
13.00%
13.00%
13.00%
13.00%
13.00%
13.00%
13.00%
13.00%
100.00%
80.00%
100.00%
100.00%
100.00%
100.00%
100.00%
100.00%
100.00%
8.00mc
36.78mc
9.00mc
8.00mc
9.00mc
8.00mc
8.00mc
30.61mc
12.11mc
35.75mc
8.00mc
9.00mc
8.00mc
9.00mc
8.00mc
9.00mc
9.00mc
9.00mc
9.00mc
9.00mc
8.00mc
8.00mc
8.00mc
45.00mc
45.00mc
8.00mc
8.00mc
45.00mc
45.00mc
36.78mc
9.00mc
8.00mc
8.00mc
9.00mc
9.00mc
9.00mc
9.00mc
9.00mc
9.00mc
9.00mc
8.00mc
8.00mc
8.00mc
8.00mc
8.00mc
8.00mc
8.00mc
8.00mc
8.00mc
Long Bright Spring
Slapback 2
Slapback w verb
Echo-Verb echo long verb
Slow st chor
Performance
Hall best hall 2
Short Hall
Short Dark Hall
Short Bright Hall
Medium Hall
Medium Dark Hall
Medium Bright Hall
Long Hall
Hall
Long Dark Hall
Long Brigh Hall
Best Hall
Short Plate
Short Dark Plate
Short Bright Plate
Long Bright Plate
Medium Dark Plate
Medium Bright Plate
Medium Plate
Plate
Long Plate
Long Dark Plate
Best Plate
Short Spring
Short Dark Spring
Short Bright Spring
Medium Spring
Medium Dark Spring
Medium Bright Spring
Long Spring
Long Dark Spring
Long Bright Spring
Best Spring
Spring
Slapback 2
Short Echo
420ms Delay High Feedback
420ms Delay Low Feedback
550-275ms Delay cross Feedback
550ms Delay High Feedback
550ms Delay Low Feedback
650-375ms Delay cross Feedback
650ms Delay High Feedback
Echo
©American Audio®
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M1224FX
EFFECTS LiST Cont.
50h
Flanger Reverb
Flanger Short reverb
It Flanger Medium Reverb
Medium Flanger Medium Reverb
Slow Flanger Long Reverb
Flanger Long Reverb
Stereo Flanger Medium Reverb
Stereo Flanger Long Reverb
Whip Flanger Short Reverb
Whip Flanger Long Reverb
Slow Chorus Short Reverb
Slow Chorus Medium Reverb
Slow Chorus Long Reverb
Medium Chorus Medium Reverb
Medium Chorus Long Reverb
Fast Chorus Short Reverb
Fast Chorus Long Reverb
Trem Chorus Medium Reverb
Trem Chorus Long Reverb
Big Chorus Medium Reverb
Echo-Verb 1
100.00%
100.00%
99.00%
34.72mc
34.72mc
29.58mc
18.28mc
29.58mc
29.58mc
29.58mc
29.58mc
21.36mc
29.58mc
30.61mc
36.78mc
36.78mc
29.58mc
29.58mc
30.61mc
29.58mc
31.64mc
36.78mc
29.58mc
17.25mc
26.50mc
40.89mc
28.56mc
45.00mc
29.58mc
8.00mc
30.61mc
30.61mc
37.81mc
8.00mc
11.08mc
8.00mc
8.00mc
8.00mc
8.00mc
8.00mc
8.00mc
8.00mc
8.00mc
41.92mc
8.00mc
41.92mc
41.92mc
41.92mc
41.92mc
41.92mc
8.00mc
51h
52h
53h
54h
55h
56h
57h
58h
59h
60h
61h
62h
63h
64h
65h
66h
67h
68h
69h
70h
71h
72h
73h
74h
75h
76h
77h
78h
79h
80h
81h
82h
83h
84h
85h
86h
87h
88h
89h
90h
91h
92h
93h
94h
95h
96h
97h
98h
99h
100.00%
100.00%
100.00%
100.00%
100.00%
100.00%
100.00%
100.00%
100.00%
100.00%
79.00%
Flanger+Verb
79.00%
Chorus+Verb
100.00%
100.00%
100.00%
100.00%
100.00%
33.00%
32.00%
53.00%
37.00%
23.00%
Hard echo Medium verb
Echo-Verb 2
Echo-Verb 4
Echo-Verb 3
Pre delay serial
Cross echo
Echo long verb
Echo cross verb
Echo+Verb
48.00%
72.00%
28.00%
29.00%
Echoverb
Chorus 1
Chorus 2
Chorus fast
18.00%
100.00%
100.00%
100.00%
100.00%
72.00%
Deep slow chorus
Deep fast chorus
Medium slow chorus
Slow stereo chorus
Leslie
Chorus
100.00%
100.00%
100.00%
100.00%
100.00%
100.00%
100.00%
100.00%
100.00%
100.00%
100.00%
100.00%
100.00%
100.00%
100.00%
Medium leslie
Stereo chorus
Slow It Flange
It Flanger
Deep slow flanger
Deep It flanger
Deep lazer flanger
Jet flanger 1
Jet flanger 2
Medium flanger
Medium lazer flanger
Strong flanger
Flanger
41.92mc
41.92mc
©American Audio®
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M1224FX
CLEaNiNG
Dust will settle in the fader track overtime dust can cause a popping noise on the fader. To prevent
this cover you mixer. If the mixer has been unused for over a month or more move you faders up and
down a couple of times this will move most of the settle dust from the fader track. Do not eat, drink,
or smoke over you over or near the mixer.
Don’t use spray cleaners. Use compressed air or a vacuum with a brush accessory.
Cleaning frequency depends on the environment in which the mixer operates (i.e. smoke, fog residue,
dust, dew).
M1224FX
TROUBLESHOOTiNG
Trouble Shooting: Listed below are common problems you may encounter, and solutions.
I can’t hear the source from a channel thru the main mix
Check the trim knob, fader, and output volume on your source.
Check the Mute button, or make sure your sub groups are assigned to the mains.
Check you connection from the source to the mixer.
Try the same connection on a different channel with the same settings.
I hear noise in mix
Check your power a 60Hz hum, could come from ungrounded equipment.
Turn all the faders down one at a time and the stereo return knob. If the noise goes away
it’s that channel or the source. Disconnect the source from the mixer bring up that fader if
the noise is gone it your source, If it is the source try bringing down its out put volume.
I have no power
Make sure your power supply is properly hooked up to the unit.
I can’t hear the mix on my headphones or my control room monitors
Check the phones / control room knob, Select the proper source.
©American Audio®
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M1224FX
WaRRaNTY
The M1224FX carries a one year limited warranty. We recommend you fill out the enclosed warranty
card to validate your purchase. All returned service items whether under warranty or not, must be freight
pre-paid and accompany a R.A. (return authorization) number. If the mixer is under warranty, you must
provide a proof of purchase invoice. You may obtain a R.A. number by contacting our customer support
team on our toll free number. Please contact American Audio® customer support at (800) 322-6337
for a R.A. number. All package not displaying a R.A. number on the outside of the package will
be returned to the shipper.
1-YEAR LImITED wARRANTY
A. American Audio® hereby warrants, to the original purchaser, American Audio® products to be free
of manufacturing defects in material and workmanship for a period of 1 Year (365 days) from the date
of purchase. This warranty shall be valid only if the product is purchased within the United States of
America, including possessions and territories. It is the owner’s responsibility to establish the date and
place of purchase by acceptable evidence, at the time service is sought.
b. For warranty service, send the product only to the American Audio® factory. All shipping charges
must be pre-paid. If the requested repairs or service (including parts replacement) are within the terms
of this warranty, American Audio® will pay return shipping charges only to a designated point within
the United States. If the entire instrument is sent, it must be shipped in its original package. No acces-
sories should be shipped with the product. If any accessories are shipped with the product, American
Audio® shall have no liability whatsoever for loss of or damage to any such accessories, nor for the
safe return thereof.
C. This warranty is void if the serial number has been altered or removed; if the product is modified in
any manner which American Audio® concludes, after inspection, affects the reliability of the product;
if the product has been repaired or serviced by anyone other than the American Audio® factory unless
prior written authorization was issued to purchaser by American Audio®; if the product is damaged
because not properly maintained as set forth in the instruction manual.
D. This is not a service contract, and this warranty does not include maintenance, cleaning or peri-
odic check-up. During the period specified above, American Audio® will replace defective parts at
its expense, and will absorb all expenses for warranty service and repair labor by reason of defects
in material or workmanship. The sole responsibility of American Audio® under this warranty shall be
limited to the repair of the product, or replacement thereof, including parts, at the sole discretion of
American Audio®. All products covered by this warranty were manufactured after January 1, 1990, and
bear identifying marks to that effect.
E. American Audio® reserves the right to make changes in design and/or improvements upon its prod-
ucts without any obligation to include these changes in any products theretofore manufactured.
F. No warranty, whether expressed or implied, is given or made with respect to any accessory sup-
plied with products described above. Except to the extent prohibited by applicable law, all implied
warranties made by American Audio® in connection with this product, including warranties of mer-
chantability or fitness, are limited in duration to the warranty period set forth above. And no warran-
ties, whether expressed or implied, including warranties of merchantability or fitness, shall apply to
this product after said period has expired. The consumer’s and or Dealer’s sole remedy shall be such
repair or replacement as is expressly provided above; and under no circumstances shall American
Audio® be liable for any loss or damage, direct or consequential, arising out of the use of, or inability
to use, this product.
g. This warranty is the only written warranty applicable to American Audio® Products and supersedes
all prior warranties and written descriptions of warranty terms and conditions heretofore published.
©American Audio®
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M1224FX
Model: M1224FX
POwER SUPPLY:
SPECiFiCaTiONS
AC 115v~60Hz/230v~50Hz
Single Voltage:
AC 100V, 50/60Hz (Japan);
AC 110V, 60Hz (Colombia)
AC 120V, 60Hz (U.S.A. and Canada);
AC 220V, 50Hz (Chile and Argentina);
AC 220V, 60Hz (Philippines and korea)
AC 127V, 60Hz (Mexico)
AC 240V, 50Hz (Australia)
AC 230V, 50Hz (Europe, U.k., New Zealand, South Africa, and Singapore)
DImENSIONS:
420mm (W) x 328mm (D) x 90mm (H)
16.5” (W) x 12.9” (D) x 3.54” (H)
7.49 Lbs. / 3.4 kgs.
wEIGHT:
POwER CONSUmPTION:
36W
OPERATING TEmPERATURE:
5 to 35 deg. C; Humidity: 25 to 85% RH
(non-condensing); Storage Temperature: -20 to 60 deg. C
mAXImUm OUTPUT LEVEL (0.5% T.H.D. AT 1kHz):
FREQUENCY RESPONSE:
+26db (Main L/R), +20db (ALT 3/4, Aux/EFX, & Control Room)
+20dB (Insert), More than 100mW (Headphones) @ 33Ω
20Hz ~ 20kHz, +1/-2db (Mix L/R, ALT 3/4, Aux/EFX Send, &
Control Room)
T.H.D. (Total Harmonic Distortion):
<0.1% @ +14db 20Hz ~ 20kHz (Mix L/R, ALT 3/4, Aux/EFX
Send, & Control Room)
mAXImUm VOLTAGE GAIN:
MiC iN to MaiN L/R:
MiC iN to aLT 3/4:
MiC iN to aUX (PRE):
MiC iN to aUX (POST):
MiC iN to EFX (REv):
MiC iN to CONTROL ROOM L/R:
MiC iN to REC L/R:
74db
74db
66db
76db
76db
80db
52.2db
54db
54db
46db
56db
56db
60db
44db
44db
16db
20db
LiNE iN to MaiN L/R:
LiNE iN to aLT 3/4:
LiNE iN to aUX (PRE):
LiNE iN to aUX (POST):
LiNE iN to EFX (REv):
LiNE iN to CONTROL ROOM L/R:
STEREO iN to MaiN L/R:
STEREO iN to aLT 3/4:
aUX RETURN iN to MaiN L/R:
TaPE iN to MaiN L/R:
HUM AND NOISE [(AVERAGE RS = 150Ω) (Master Fader At Nominal Level & All Channel Faders At Minimum)]:
MiX L/R, aLT 3/4, aUX/EFX SENd, CONTROL ROOM OUT:
MiX L/R, aLT 3/4, aUX/EFX SENd, CONTROL ROOM OUT:
-127db Equivalent Input Noise, -95db Residual Noise
-88db
CHANNEL INDICATORS:
PEak: An indicator for each channel turns on when the pre-channel fader signal is 5db below clipping.
INTERNAL DIGITAL EFFECT:
LED mETERS:
100 Selectable Presets/Foot Switch Controlable
10-Segment LEDx2, Main L/R, ALT 3/4, PFL, & Tape IN
©American Audio®
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M1224FX
SPECiFiCaTiONS
INPUT CHANNEL EQ:
HiGH:
Mid:
LOW:
12kHz Shelving
2.5kHz Peeking
80Hz Shelving
TURNOvER/ROLL OFF FREQUENCiES:
Located 3db below Maximum boost/Cut
GAIN CONTROL (mONO/STEREO COmBINATION INPUT CHANNEL):
40db Variable (-20db ~ +20db)
GAIN CONTROL (mONO INPUT CHANNEL):
CROSSTALK (at 1kHz):
44db Variable (-50db ~ +6db), (-30db ~ +14db)
-70db between Input Channels,
-70db between Input/Output Channels
-INPUT
Input
Impedance
Nominal
Impedance
Rated
Input Level
Input Connector
Connector Type
CH Mic
4kΩ
50 ~ 600Ω
600Ω
-50dB
-30dB
-44dB
-20dB
0dB
XLR 3-31 Type Balanced
Phone Jack (TRS) T = Hot
R = Cold S = GND
CH Line
10kΩ
3kΩ
Stereo Input Mic
Stereo Input
600Ω
XLR 3-31 Type Balanced
Unbalanced Phone Jack
5kΩ
600Ω
Phone Jack (TRS) T = Out
R = In S = GND
Mono Channel Insert Input
10kΩ
10kΩ
600Ω
Tape In
600Ω
-10dBV
RCA pin Jack
-OUTPUT
Output
Impedance
Nominal
Impedance
Rated Output
Level
Output Connector
MIX Out L/R
Connector type
Balanced Phone Jack
Unbalanced Phone Jack
Unbalanced Phone Jack
Unbalanced Phone Jack
240Ω
75Ω
20KΩ
10KΩ
10KΩ
600Ω
10kΩ
10kΩ
+4dB
+4dB
+4dB
+4dB
0dB
ALT 3/4
CTRL Room Out
Aux Send
75Ω
75Ω
Phone Jack (TRS)T = Out
R = In S = GND
Mono Channel Insert Input
Rec Out
600Ω
600Ω
-10dBV
RCA pin Jack
Phones Out
100Ω
33Ω
3mW
Stereo Phone Jack
©American Audio®
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M1224FX Instruction Manual Page 25
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Junostraat 2
6468 EW kerkrade
Netherlands
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