MCA Series Multi-Channel Amplifiers Operation Manual February 2012 Biamp Systems, 9300 SW Gemini Drive, Beaverton, Oregon 97008 U.S.A. (503) 641-7287 www.biamp.
IMPORTANT SAFETY INSTRUCTIONS IMPORTANT SAFETY INSTRUCTIONS 1) Read these instructions. 2) Keep these instructions. 3) Heed all warnings. 4) Follow all instructions. 5) Do not use this product near water. 6) Clean only with dry cloth. 7) Do not block 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 product (including amplifiers) that produce heat.
TABLE OF CONTENTS MCA SERIES MULTI-CHANNEL AMPLIFIERS FEATURES. . . . . . . . . . . . . . . 4 FRONT PANEL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 REAR PANEL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 BRIDGING . . . . . . . . . . . . . . . .
MCA MULTI-CHANNEL AMPLIFIERS MCA Series Multi-Channel Amplifiers provide eight channels of power amplification. Model MCA 8050 delivers 50 watts/channel into 4 ohms. Model MCA 8150 delivers 150 watts/channel into 4 ohms. Channels may be bridged in pairs for higher combined wattage. MCA Series amplifiers are covered by Biamp Systems’ five-year warranty.
FRONT PANEL MCA 8050 Front Panel MCA 8050 signal peak temp fault Channel 1 signal peak temp fault Channel 2 signal peak temp fault Channel 3 signal peak temp fault Channel 4 signal peak temp fault Channel 5 signal peak temp fault Channel 6 signal peak temp fault Channel 7 signal peak temp fault on Channel 8 MCA 8150 Front Panel MCA 8150 signal peak temp fault Channel 1 signal peak temp fault Channel 2 signal peak temp fault Channel 3 signal peak temp fault Channel 4
REAR PANEL input 2 outputs 1 level level 2 outputs input 3 level signal / peak outputs level OFF OFF OFF 4 input 1 2 HPF BRIDGE HPF input 5 signal / peak outputs level signal / peak 6 input 3 level OFF OFF OFF input 7 level Designed in Oregon, U.S.A.
REAR PANEL HPF These DIP switches provide High-Pass Filters for the input channels. High-Pass Filters are used to eliminate unnecessary lower frequencies (12dB/octave @ 125Hz) for speech and distributed speaker applications. From the factory, the High-Pass Filters are bypassed (switches up). To assign a High-Pass Filter on an input channel, move the switch to the down position.
REAR PANEL Line Voltage Selector Switch Set this switch to “115” for nominal line voltages of 110-120 VAC. Set this switch to “230” for nominal line voltages of 220-240 VAC. Make sure that the appropriate fuse is installed when changing voltage selections. Fuse Replace Fuse with same type MCA 8050 @ 115VAC Fuse = MCA 8050 @ 230VAC Fuse = MCA 8150 @ 115VAC Fuse = MCA 8150 @ 230VAC Fuse = and value only. F 10 A H 250 V T 4 A L 250 V F 15 A H 250 V T 6.
BRIDGING Bridge DIP switches allow the adjacent odd/even numbered channels to be bridged together in pairs, for a higher, combined output power (see Bridge on pg. 7). When a pair of channels are bridged, their wattage is combined, but the minimum load increases to 8 ohms (MCA 8050 = 100 watts @ 8 ohms; MCA 8150 = 300 watts @ 8 ohms). Bridge disables the even numbered input, and applies the odd numbered input signal to both amplifier channels. From the factory, Bridge is bypassed (switches up).
SPECIFICATIONS MCA 8050 SPECIFICATIONS Maximum Power Output (@ 2kHz): Individual channel into 4 ohm load Individual channel into 8 ohm load Bridged channels into 8 ohm load MCA 8150 SPECIFICATIONS 50 watts/channel 30 watts/channel 100 watts Maximum Power Output (@ 2kHz): Individual channel into 4 ohm load Individual channel into 8 ohm load Bridged channels into 8 ohm load 150 watts/channel 90 watts/channel 300 watts Signal-to-Noise Ratio (20Hz~20kHz @ rated power): > 85dB Signal-to-Noise Ratio (20Hz~
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 1. B iamp Systems warrants to the original purchaser of new products that the product will be free from defects in material and workmanship for a period of 5 YEARS from the date of purchase from an authorized Biamp Systems dealer, subject to the terms and conditions set forth below. 2.
COMPLIANCE 12
SAFETY INFORMATION 13
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