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Cover for MMA™800T
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FEATURES:
• 9 channel mixing system
• Contour switch (special equalization)
• Bass and treble controls
• 20-20 kHz frequency response
• Bridging input/output
• Plug in module capability
• Dedicated program input
• Rack-mountable or stand along package
GENERAL DESCRIPTION
The Architectural Acoustics MMA™ 800T is a high quality mixer/preamp with nine input channels. Each
channel provides a level control, and the master output section features bass and treble EQ controls (defeatable),
and special equalization contour.
The MMA™ 800T provides unmatched application flexibility with an array of optional plug-in modules,
allowing each system to be tailor-made for specialized installations. Input modules may be loaded in, as required,
for varying sound reinforcement applications, number of input channels, special functions, etc.
The program input includes a level control and is totally separate from the other eight channels. External
signals may be patched in at this point as a system auxiliary input or the ninth input channel. Signals appearing at
this input are routed directly to the master summing amplifier stage and are mixed with signals from the other
eight channels. Systems requiring a single input may use the program input--making the purchase of an input
module unnecessary. The program level control regulates the level of this input and the signal is routed through
the system bass and treble controls.
The MMA 800T is packaged as a stand-alone unit but will also rack-mount into a standard 19" rack with
an optional rack-mount kit.
FRONT PANEL:
CHANNEL LEVEL CONTROL (1):
Controls the signal level at the channel input.
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3
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2
1
5
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LOW EQ CONTROL (BASS) (2):
Active equalization control that adjusts the low frequency response. Clockwise rotation boosts lows while coun-
terclockwise rotation provides a cut (reduction) of the low frequencies (±10 dB).
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HIGH EQ CONTROL (TREBLE) (3):
Active equalization control that adjusts the high frequency response. Clockwise rotation boosts highs while
counterclockwise rotation provides a cut (reduction) of the high frequencies (±10 dB).
MASTER (4):
Controls the overall volume level of the system.
PROGRAM LEVEL CONTROL (5):
Controls the signal level of the program input.
CONTOUR SWITCH (6):
The "in" position of this switch provides a 6 dB boost at 100 Hz and 6 dB boost at 10 kHz. The "out" position
removes boost from the system.
EQ BYPASS (7):
The "in" position of this switch bypasses bass and treble equalization. The "out" position allows operation of the
equalization.
POWER ON LED (8):
Indicates when AC power is being supplied to the unit.
ACTIVITY LED (9):
Indicates output level from the master mixing stage. The LED illuminates when signal level is approximately
25 dB below rated output.
POWER SWITCH (10):
Depress to "on" position to turn on.
REAR PANEL:
AC OUTLET (unswitched)(11):
Provides AC power for auxiliary equipment with a power consumption of no more than 300 watts. Using this
outlet for equipment with total power consumption ratings of more than 300 watts can create a fire or shock
hazard.
MAINS POWER CORD (12):
Connect to 120V AC power source. This cord is fitted with a standard two prong power plug with an integral large
ground pin. For your safety, we have incorporated a 3-wire line (mains) cable with proper grounding facilities. It
is not advisable to remove the ground pin under any circumstances. If it is necessary to use the equipment without
proper grounding facilities, suitable grounding adaptors should be used. Less noise and greatly reduced shock
hazard exists when the unit is operated with the proper grounded receptacles.
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FUSE (13):
WARNING: THE FUSE SHOULD ONLY BE REPLACED WHEN THE POWER CORD
HAS BEEN DISCONNECTED FROM ITS POWER SOURCE.
The fuse is located within the cap of the fuseholder. If the fuse should fail, IT MUST BE
REPLACED WITH THE SAME TYPE AND VALUE IN ORDER TO AVOID DAMAGE TO
THE EQUIPMENT AND TO PREVENT VOIDING THE WARRANTY. If the amp repeatedly
blows fuses, it should betaken to a qualified service center for repair.
MODULE INPUT PORTS (14):
Accepts plug-in modules for all eight channels. Modules are optional and should be selected by installation
requirements. NOTE: All modules will function in any of the eight ports.
MUTE (15):
Plug-in modules are available with muting function. The mute lines may be activated with an external switch at
this point.
REMOTE MASTER VOLUME (16):
Connect a 10 KB (linear) potentiometer across these terminals to allow remote control of the amplifier. For best
results, turn the front panel Master level control full clockwise. Refer to wiring diagram for connection details.
Remote
Volume
HI
LO
10 K Linear Taper
Potentiometer
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2
Shielded
Cable
OUTPUTS (17):
A 600 ohm transformer balanced output is provided via screw terminals at this point.
AUX OUT (18):
Provides an unbalanced output via RCA jack for use with external equipment such as tape decks, power amps,
etc.
BRIDGE IN/OUT (19):
This jack may be used as a mixing input/output point when the similar terminal of another amplifier is connected
to this terminal. A separate tape recording output may be taken from this point without interaction of EQ and
Master level control.
PROGRAM IN (20):
Accepts signals from other sources such as another mixer or mixer/amplifier. CD player, or tuner. Signal level at
this input in controlled by the Program level control and is fed to the Master output. The Program In may be
regarded as channel "nine" without plug-in module capability. NOTE: This input is muted whenever the mute
#1 line is grounded.
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SPECIFICATIONS
CONTROLS:
OUTPUT POWER:
+4 dBm (rated output)
9 input gain controls, 1 bass control, 1 treble
+17 dBm (maximum)
control, 1 contour switch, 1 master gain
control, 1 power switch, 1 EQ defeat switch
POWER BANDWIDTH:
INDICATORS:
40 Hz to 20 kHz, +17 dBm, > 0.5% THD
Power LED
Activity LED
FREQUENCY RESPONSE:
20 Hz to 20 kHz ±1 dB
PROTECTION:
THD:
AC line fuse (external)
0.05% at 1 kHz, rated output
CONNECTORS:
S/N RATIO:
PGM input, bridge in/out, AUX out: RCA
phono jack
Master Volume Min: 100 dB
Master Volume Max: 77 dB
Ports 1-8: card edge connector
600 ohm output: screw terminals
Muting: screw terminals
AC line cord: SJT, 3-prong
AC outlet: 3-prong
TONE CONTROLS:
Bass ±10 dB @ 100 Hz
Treble ±10 dB @ 10 kHz
CONTOUR:
+6 dB @ 100 Hz
+6 dB @ 10 kHz
POWER CONSUMPTION:
Domestic: 120 V AC, 60 Hz, 15 watts
Export: 220/230-240 V AC, 50/60 Hz, 15 watts
INPUTS:
Eight input ports, each accepts any input/output
module; one dedicated program input (dual
RCA phono jacks), bridge in/out
DIMENSIONS:
3.50" H x 17" W x 7.75" D
WEIGHT:
INPUT SENSITIVITY:
10 lbs.
Ports 1-8: 100 mV @ 10 K ohms
Bridge in/out: 100 mV/3.3 K ohms
PGM In: 150 mV @ 10 K ohms
COLOR:
Gray
OTHER FEATURES:
OUTPUTS:
Output disconnected for 5 seconds after power
on
Main: +4 dBu @ 600 ohms (balanced)
AUX: +3 dBu @ 10 K ohms (unbalanced)
TM
®
Due to our efforts for constant improvements,
features and specifications listed herein are subject to change without notice.
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Block Diagram
WARNING!
DO NOT ATTEMPT TO INSTALL THIS UNIT WHILE IT OR ANY
CONNECTING UNITSARE POWERED ON. RISK OFELECTRICAL
SHOCK EXISTS IFALLUNITS ARE NOT POWERED OFF DURING
INSTALLATION. TO PREVENT ELECTRICAL SHOCK OR FIRE
HAZARD, DO NOT EXPOSE THISAPPLIANCE TO RAIN OR MOIS-
TURE.
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For further information on other Peavey Architectural
Acoustics products, ask your Authorized Peavey Sound
Contractor for the appropriate Peavey Architectural
Acoustics catalog/publication.
The BluePrint
Commercial Sound For Permanent Installations
Engineered Sound Products For Permanent Installations
®
Be sure to ask about products in the following categories:
Modular Series Mixer, Mixer/Amplifiers
Rack Kits for MA™ Series Products
Wall Mount Mixer/Amplifiers
Non-powered Mixers
Powered Mixers
Equalizers-Analog
Equalizers-Programmable
Electronic Crossover/Delay Processors
Power Amplifiers
Loudspeaker Systems
Acoustical Components
Utility Amplifiers, Mixer/Amplifiers
Rack Kits for UMA™ Series Products
Telephone Paging
Zone Paging Systems
Mixers and Mixing Consoles
Power Amplifiers
Loudspeaker Systems
Microphones
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LIMITED WARRANTY
Peavey Electronics Corporation warrants to the original purchaser of this new Architectural Acoustics
product that it is free from defects in material and workmanship. If within one (1) year from date of purchase
a properly installed product proves to be defective and Peavey is notified, Peavey will repair or replace it at
nocharge.(Note:Batteriesandpatchcordsnotcovered.)“Originalpurchaser”meansthecustomerforwhom
the product is originally installed.
Damage resulting from improper installation, interconnection of a unit or system of another manufacturer,
accident or unreasonable use, neglect or any other cause not arising from defects in material and
workmanship is not covered by this warranty. The warranty is valid only as to products purchased and
installed in the United States and Canada.
THIS LIMITED WARRANTY IS IN LIEU OF ANY AND ALL WARRANTIES, EXPRESSED OR IMPLIED,
INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR USE.
UNDER NO CIRCUMSTANCES WILL PEAVEY BE LIABLE FOR ANY LOST PROFITS, LOST SAVINGS,
INCIDENTAL DAMAGES OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE
THE PRODUCT, EVEN IF PEAVEY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. THIS
LIMITED WARRANTY IS THE ONLY EXPRESSED WARRANTY ON THIS PRODUCT, AND NO OTHER STATE-
MENT, REPRESENTATION, WARRANTY, OR AGREEMENT BY ANY PERSON SHALL BE VALID OR BINDING
UPON PEAVEY.
Peavey’s liability to the original purchaser for damages for any cause whatsoever and regardless of the
form of action is limited to the actual damages up to the greater of Five Hundred Dollars ($500) or an amount
equal to the purchase price of the product that caused the damage or that is the subject of or is directly related
to the cause of action. This limitation of liability will not apply to claims for personal injury or damage to real
property or tangible personal property allegedly caused by Peavey’s negligence. For information on service
under this warranty, call a Peavey customer service representative at (601) 483-5376.
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IMPORTANT SAFETY INSTRUCTIONS
WARNING: When using electric products, basic cautions should always be followed, including the following.
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6.
Read all safety and operating instructions before using this product.
All safety and operating instructions should be retained for future reference.
Obey all cautions in the operating instructions and on the back of the unit.
All operating instructions should be followed.
This product should not be used near water, i.e., a bathtub, sink, swimming pool, wet basement, etc.
This product should be located so that its position does not interfere with its proper ventilation. It should not be placed flat against a
wall or placed in a built-in enclosure that will impede the flow of cooling air.
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9.
This product should not be placed near a source of heat such as a stove, radiator, or another heat producing amplifier.
Connect only to a power supply of the type marked on the unit adjacent to the power supply cord.
Never break off the ground pin on the power supply cord. For more information on grounding, write for our free booklet “Shock
Hazard and Grounding.”
10. Power supply cords should always be handled carefully. Never walk or place equipment on power supply cords. Periodically check
cords for cuts or signs of stress, especially at the plug and the point where the cord exits the unit.
11. The power supply cord should be unplugged when the unit is to be unused for long periods of time.
12. If this product is to be mounted in an equipment rack, rear support should be provided.
13. Metal parts can be cleaned with a damp rag. The vinyl covering used on some units can be cleaned with a damp rag or an ammonia-
based household cleaner if necessary. Disconnect unit from power supply before cleaning.
14. Care should be taken so that objects do not fall and liquids are not spilled into the unit through the ventilation holes or any other
openings.
15. This unit should be checked by a qualified service technician if:
a. The power supply cord or plug has been damaged.
b. Anything has fallen or been spilled into the unit.
c. The unit does not operate correctly.
d. The unit has been dropped or the enclosure damaged.
16. The user should not attempt to service this equipment. All service work should be done by a qualified service technician.
17. This product should be used only with a cart or stand that is recommended by Peavey Electronics.
18. Exposure to extremely high noise levels may cause a permanent hearing loss. Individuals vary considerably in susceptibility to noise
induced hearing loss, but nearly everyone will lose some hearing if exposed to sufficiently intense noise for a sufficient time.
The U.S. Government’s Occupational Safety and Health Administration (OSHA) has specified the following permissible noise level
exposures.
Duration Per Day In Hours
Sound Level dBA, Slow Response
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6
90
92
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95
3
97
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1 1/2
1
1/2
1/4 or less
100
102
105
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115
According to OSHA, any exposure in excess of the above permissible limits could result in some hearing loss.
Ear plugs or protectors in the ear canals or over the ears must be worn when operating this amplification system in order to prevent a
permanent hearing loss if exposure is in excess of the limits as set forth above. To ensure against potentially dangerous exposure to high
sound pressure levels, it is recommended that all persons exposed to equipment capable of producing high sound pressure levels such as
this amplification system be protected by hearing protectors while this unit is in operation.
SAVE THESE INSTRUCTIONS!
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®
®
ARCHITECTURAL ACOUS TICS
®
Features and specifications subject to change without notice.
Peavey Electronics Corporation 711 A Street / Meridian, MS 39301 / U.S.A. / (601) 483-5365 / Fax 486-1278
©1995
#80302328
Printed in U.S.A. 12/95
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