CMA Series Commercial Mixer/Amplifiers Operation Manual ® 6/14/99 Biamp Systems, 10074 S.W. Arctic Drive, Beaverton, Oregon 97005 U.S.A. (503) 641-7287 an affiliate of Rauland Borg Corp.
CMA Series TABLE OF CONTENTS INTRODUCTION Front Panel Features pg. 2 Rear Panel Features pg. 4 Modifications pg. 6 Applications pg. 8 Specifications pg. 12 Block Diagram pg. 13 Warranty The CMA Series of commercial mixer/amplifiers combines a versatile 6-input mic/line mixer with either 30, 60, 120, or 350 Watt amplification.
FRONT PANEL FEATURES CMA30, CMA60, & CMA120 Front Panels peak signal fault 1 2 3 4 6 5 master on 0 off on on off PRECEDENCE CMA120 Commercial Mixer Amplifier on off loudness contour low cut 0 + bass tone control + treble power CMA350 Front Panel peak signal fault 1 2 3 4 6 5 master power 0 off on low cut off on loudness contour 0 PRECEDENCE CMA350 Commercial Mixer Amplifier on off + bass tone control 2 + treble I O
FRONT PANEL FEATURES Peak Indicator: This red LED flashes when signal levels at the amplifier output have reached maximum. Occasional flashes of the Peak Indicator are acceptable, however, a continuously lit LED may indicate an excessive level setting. Level (Channels 1~6): These controls adjust the amount of signal sent from the individual input channels to the mixer output. Optimum Level setting is near the 12 o'clock position (unity gain).
REAR PANEL FEATURES CMA30, CMA60, & CMA120 Rear Panels pre out channel 2 channel 1 phantom pwr auto mute manual mute mute -40 level -20 phantom pwr auto mute manual mute mute -40 level -20 trim ina priority 25V compressor 6.3A - 115V out 50V min 70V 3.
REAR PANEL FEATURES Stacking In: These screw terminals provide a balanced line-level input to the mix bus, for input expansion. Stacking In is before Loudness, Tone, Compressor, Master Level, & Low Cut. For unbalanced input, wire high to (+) and ground to both (-) & ( ). Assignment: These five DIP switches are used to assign specific functions to the individual channels. To assign a function, move the respective switch to the left.
MODIFICATIONS CAUTION: THE FOLLOWING INFORMATION IS FOR USE BY QUALIFIED INSTALLATION/SERVICE PERSONNEL. Removable Rack-Handles: The CMA Series have removable rack-handles. To remove the rack-handles: 1) Remove the two screws from the side of each rack-handle. 2) Remove the rack-handles. 3) Replace the mounting screws in the sides of the chassis. Security Cover: The CMA Series includes a removable front panel security cover. A hole in the security cover provides access only to the power switch.
MODIFICATIONS WARNING: TO REDUCE THE RISK OF SHOCK, DISCONNECT ALL POWER FROM THE UNIT BEFORE MAKING ANY INTERNAL MODIFICATIONS OR EXTERNAL FIELD WIRING CONNECTIONS. 115V/230V AC Operation: The CMA Series may be converted to 230V operation for use in other countries. To convert to 230V operation: 1) Remove the fuse holder compartment from the lower portion of the rear panel AC Power Cord receptacle. 2) Replace the fuse in the fuse clip with the same type and appropriate value fuse (see table below).
APPLICATIONS Commercial/Industrial Paging System CMA60 R amp in pre out channel 2 channel 1 phantom pwr auto mute manual mute mute -40 level -20 phantom pwr auto mute manual mute mute -40 level -20 priority compressor out 50V min ~ 115/230V channel 3 phantom pwr auto mute manual mute mute -40 level -20 trim 25V 6.3A - 115V 3.
APPLICATIONS Church Sound Reinforcement System MSP11 ~ 27V 50/60 Hz output BIAMP SYSTEMS Portland, Oregon input serial port output 12 watts class 2 wiring link port link an affiliate of Rauland-Borg Corp. MSP11 input MADE IN U.S.A. logic inputs CMA120 R pre out compressor 6.
APPLICATIONS Retail Store Paging System CMA30 R channel 1 phantom pwr auto mute manual mute mute -40 level -20 trim priority 25V compressor 6.
APPLICATIONS Multi-Floor Office/Hospital Paging System DA28R OUTPUTS DA28R INPUTS BIAMP SYSTEMS invert logic phantom invert logic phantom ~ 27V 50/60 Hz Portland, Oregon an affiliate of Rauland-Borg Corp.
SPECIFICATIONS CMA30, CMA60, & CMA120 Output Power: CMA 30 CMA 60 CMA 120 Power Bandwidth (THD < 0.4%): direct output transformer output Frequency Response (+0/-1.
BLOCK DIAGRAM Channel 1 (mic/line/tel) + - telephone mic/ line trim priority auto. mute input xformer phtm. power man. mute mix CMA30, CMA60, CMA120, & CMA350 CMA 120 Block Diagram send/ return level bass treble loudness -40dB -20dB priority -10dB rec out auto. mute threshold stacking input + amp in level pre out man. mute Channels 2 thru 6 (mic/line) input xformer (option) + - mic/ line compressor chime trim signal peak remote control phtm.
WARRANTY BIAMP SYSTEMS IS PLEASED TO EXTEND THE FOLLOWING 5-YEAR LIMITED WARRANTY TO THE ORIGINAL PURCHASER OF THE PROFESSIONAL SOUND EQUIPMENT DESCRIBED IN THIS MANUAL. BIAMP Systems expressly warrants this product to be free from defects in material and workmanship for a period of 5 YEARS from the date of purchase as a new product from an authorized BIAMP Systems dealer under the following conditions. 1.
