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Biamp Systems, 10074 S.W. Arctic Drive, Beaverton, Oregon  97005  U.S.A.        (503) 641-7287        www.biamp.com 

 
 

MCA Series 

Multi-Channel Amplifiers 

 

Operation Manual 

 
 

IMPORTANT SAFETY INSTRUCTIONS 

1) Read these instructions. 
 
2) Keep these instructions. 
 
3) Heed all warnings. 
 
4) Follow all instructions. 
 
5) Do not use this apparatus near water. 
 
6) Clean only with dry cloth. 
 
7) Do not block any ventilation openings. Install in 
accordance with the manufacturer’s instructions.  
 
8) Do not install near any heat sources such as 
radiators, heat registers, stoves, or other 
apparatus (including amplifiers) that produce heat. 
 
9) Do not defeat the safety purpose of the 
polarized or grounding-type plug.  A grounding 
type plug has two blades and a third grounding 
prong. The third prong is provided for your safety. 
When 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 
apparatus. 

 

11) Only use attachments/accessories specified by 
the manufacturer.  
 
12) Unplug this apparatus during lightning storms or 
when unused for long periods of time. 
 
13) Refer all servicing to qualified service 
personnel. Servicing is required when the 
apparatus has been damaged in any way, such as 
power-supply cord or plug is damaged, liquid has 
been spilled or objects have fallen into the 
apparatus, the apparatus has been exposed to rain 
or moisture, does not operate normally, or has been 
dropped. 
 
14) WARNING - To reduce the risk of fire or electric 
shock, do not expose this apparatus to rain or 
moisture. 
 
15) The MAINS plug or appliance coupler is used 
as the disconnect device.  This disconnect device 
must remain redily accessible after installation. 
 
16) In order to comply with international safety 
requirements for operating temperature, clearance 
of at least 5cm or 1.97" must be maintained 
between this device and other rack-mounted 
devices. This spacing will ensure that all exposed 
metal surfaces are safe to touch. 
 

 
 

Explanation of safety related markings and symbols which appear on the outside of the apparatus. 

 

 

Lightning Bolt:  Hazardous Live voltages present when this unit is in operation.  Do not touch terminals 
marked with this symbol while the unit is connected to live power. 
 

 

Exclamation Point:  Replace components (i.e. fuses) only with the values specified by the 
manufacturer.  Failure to do so will compromise safe operation of this unit. 

Summary of Contents for MCA SERIES

Page 1: ...g lightning storms or when unused for long periods of time 13 Refer all servicing to qualified service personnel Servicing is required when the apparatus has been damaged in any way such as power supply cord or plug is damaged liquid has been spilled or objects have fallen into the apparatus the apparatus has been exposed to rain or moisture does not operate normally or has been dropped 14 WARNING...

Page 2: ...11Feb09 TABLE OF CONTENTS Front Panel Rear Panel Bridging Remote Control Specifications Warranty CE Declaration pg 2 pgs 3 4 pg 5 pg 6 pg 7 pg 8 ...

Page 3: ...8 channels of 50W MCA 8050 or 150W MCA 8150 channels may be bridged in pairs for combined power terminals for remote control of channel levels muting balanced line level inputs on plug in barrier strips rear panel level controls high pass filter switches amplifier outputs on screw terminal connectors dual color signal peak indicators on front rear panels front panel indicators for amplifier temp l...

Page 4: ... an LED is green that channel has signal above 30dB When an LED is red that channel signal is clipping max power CAUTION Signal levels should be adjusted to avoid clipping Clipping can cause severe distortion over temperature conditions and even loudspeaker damage NOTE Signal Peak indicators will turn off during Temp Fault conditions see Temp Fault Indicators below Temp Fault Indicators These red ...

Page 5: ... R LISTED C US BIAMP SYSTEMS Designed in Oregon U S A Assembled in India 115 230VAC 50 60Hz 900 Watts 115 MCA 8150 rear panel F U S E F U S E O level signal peak signal peak level level signal peak signal peak level level signal peak signal peak level remote control level signal peak signal peak level HPF HPF OFF OFF OFF HPF HPF OFF OFF OFF HPF HPF OFF OFF OFF HPF HPF OFF OFF OFF BRIDGE BRIDGE BRI...

Page 6: ...put and applies the odd numbered input signal to both amplifier channels From the factory Bridge is bypassed switches up To assign Bridge to a pair of channels move the switch to the down position Output These screw terminals provide the speaker outputs from the channels Connect the positive speaker line to the terminal and the negative speaker line to the terminal of the channel being used The mi...

Page 7: ... off Remote Control provides 10V and ground terminals for use with potentiometers but external ramp voltage devices may be used instead Potentiometers should be 25kΩ linear taper and are wired with high to 10V low to ground and wiper to the desired channel terminal s See examples below The wiper of a single potentiometer may be wired to multiple control terminals to control a group of channels How...

Page 8: ...6 SPECIFICATIONS Biamp Systems reserves the right to make changes to performance specifications without prior notice ...

Page 9: ... repairs or installed in any manner that does not comply with BIAMP Systems recommendations 4 Electro mechanical fans electrolytic capacitors and normal wear and tear of items such as paint knobs handles and covers are not covered under this warranty 5 THIS WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES EXPRESS OR IMPLIED BIAMP SYSTEMS DISCLAIMS ALL OTHER WARRANTIES EXPRESS OR IMPLIED INCLUDING BUT N...

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