User manual BIAMP CMA SERIES

[. . . ] TM CMA Series Commercial Mixer/Amplifiers Operation Manual Biamp Systems, 10074 S. W. Arctic Drive, Beaverton, Oregon 97005 U. S. A. an affiliate of Rauland Borg Corp. (503) 641-7287 www. biamp. com Print Update June 17, 2002 CMA Series TABLE OF CONTENTS Front Panel Features Rear Panel Features Modifications Applications Specifications Block Diagram Warranty pg. 13 integrated mixer, power amplifier, and output transformer five electronically balanced microphone/line input channels one transformer balanced microphone/line/tel input channel rear panel trim control & pad switch on each input channel +24 Volt phantom power selectable on each input channel imput transformer option on mic/line inputs (except CMA350) automatic muting of selected channels (-10, -20, or -40dB) automatic muting triggered by selected "priority" channels manual muting of selected channels (-10, -20, or -40dB) manual muting triggered from remote contact closures remote control of master level via rear panel terminals integral output compressor with rear panel threshold control recessed treble & bass controls plus "loudness" & "low-cut" two insert points for signal processing and remote control two line-outs and one stack-in for system interconnections 30, 60, 120, or 350 Watts into direct or distributed systems front panel indicators for power, fault, signal, and peak internal 'pre-announcement' chime tone with level control input/output connections provided on barrier strip terminals integral security cover and removable rack-wing/handles covered by Biamp Systems' five-year warranty marked, UL and C-UL (UL Canada) listed INTRODUCTION The CMA Series of commercial mixer/amplifiers combines a versatile 6-input mic/line mixer with either 30, 60, 120, or 350 Watt amplification. Mixing functions include mic/line/telephone inputs, selectable automatic & manual channel muting, channel priority assignment, remote level control, tone control, a built-in compressor, an internal chime, phantom power, and extensive output patching. [. . . ] Mute/Chime: This screw terminal (plus " ") allows manual muting of any selected channels, via an external switch or contact closure (see Assignment & Priority below). When the Chime Level control is turned up (on), a pre-announcement chime tone will also be activated by the switch or contact closure. 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. Phantom Pwr assigns +24 Volts DC phantom power to the channel input, for powering condenser microphones. CAUTION: TO AVOID DAMAGE TO EQUIPMENT, ASSIGN PHANTOM POWER ONLY ON CHANNELS WHICH ARE SELECTED FOR 'MIC' INPUT AND WHICH REQUIRE PHANTOM POWER. To remove the rack-handles: 1) Remove the two screws from the side of each rack-handle. 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. To remove the security cover: 1) Using a 3mm hex wrench, loosen the two captive security cover mounting screws. 2) Remove the security cover. 6 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). 3) Replace the fuse holder compartment. 230V fuse values CMA30 - 1A NB 250V CMA60 - 2A NB 250V CMA120 - 3A NB 250V CMA350 - 3. 15A SB 250V USE ONLY WITH 250V FUSE 4) Select the 230V position on the Power Selector Switch. The Power Selector Switch for models CMA30, CMA60, & CMA120 is recessed into the underside of the chassis, near the AC Power Cord receptacle. The Power Selector Switch for model CMA350 is instead located on the left side of the rear panel, above the AC Power Cord receptacle. rear panel bottom panel 115V 230V AC Fuse: The AC Fuse is in the lower portion of the AC Power Cord receptacle. If the AC fuse should require replacement, see table below for proper value. WARNING: FOR CONTINUED PROTECTION AGAINST RISK OF FIRE, REPLACE ONLY WITH SAME VALUE AND TYPE FUSE. MODEL CMA30 CMA60 CMA120 CMA350 115 VAC 2A NB 4A NB 6A NB 6. 3A SB 230 VAC 1A NB 2A NB 3A NB 3. 15A SB 7 APPLICATIONS Commercial/Industrial Paging System CMA60 60 watt output xfmr direct BIAMP SYSTEMS an affiliate of Rauland-Borg Corp send/return max min channel 6 phantom pwr auto mute manual mute mute -40 level -20 nom in a channel 5 phantom pwr auto mute manual mute mute -40 level -20 nom max min channel 4 phantom pwr auto mute manual mute mute -40 level -20 nom max min channel 3 phantom pwr auto mute manual mute mute -40 level -20 nom max min channel 2 phantom pwr auto mute manual mute mute -40 level -20 nom max min channel 1 phantom pwr auto mute manual mute mute -40 level -20 max min 4 E158021 LISTED 2 Z 91 COMMERCIAL AUDIO EQUIP C chime level line out nom com 8 25V rec out amp in pre out in a in a in a in a in a trim priority trim priority trim priority trim priority trim priority trim priority max min R R on off line mic on off line mic on off line mic on off line mic on off line mic on off line mic tel 6. 3A - 115V compressor auto mute threshold adjust max min 50V 3. 15A -230V out min 70V remote level +10V c mute/ chime stacking in USE ONLY WITH 250V FUSE + + + + + + + ~ 115/230V AC 50/60 Hz 375 VA background music source security paging mic telephone paging line 70V distributed speaker system This application shows a CMA60 being used in a commercial/industrial paging system. Channel #1 is set for input from the telephone paging line, and is assigned both as a priority channel and manual muting of -20dB. [. . . ] WARNING: THE ABOVE DIAGRAM SHOWS THE OUTPUT TERMINAL COVER REMOVED FOR CLARITY ONLY. THE COVER MUST BE INSTALLED WHEN THE UNIT IS ENERGIZED. 11 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. 5dB): direct output transformer output Total Harmonic Distortion (1kHz @ rated power): Output Regulation (no load to full load) Equivalent Input Noise (mic in, 150 termination): Signal-to-Noise Ratio (20Hz-20kHz @ rated power): line inputs telephone inputs master level off Compressor: attack time release time compression ratio threshold adjust range Dimensions (all models; includes rack/handles & feet): height (two rack spaces) width depth Input Impedance / Sensitivity mic inputs line inputs telephone inputs amplifier input stacking input patch/return input Output Impedance / Level: preamp output & line output record output patch/send output Amplifier Output Impedance / Level: CMA 30 CMA 60 4 / 11V 4 / 16V 8 / 16V 8 / 22V 20. 8 / 25V 10. 4 / 25V 83. 3 / 50V 41. 7 / 50V 163. 3 / 70V 81. 7 / 70V 333. 3 / 100V (export) 166. 7 / 100V (export) Power Consumption (120VAC 60Hz / 240VAC 50Hz): CMA 30 CMA 60 < 90W < 220W Weight: CMA 30 CMA 60 CMA 120 30 Watts 60 Watts 120 Watts 20Hz~20kHz 50Hz~20kHz 20Hz~20kHz 50Hz~20kHz < 0. 2% < 0. 5dB -123dBu 78dB 78dB 98dB < 1mSecond > 1 Second 4:1 15dB 6k / -77dBu (110µV) 15k / -37dBu (14mV) 600 / -60dBu (775µV) 10k / +4dBu (1. 2V) 20k / -8dBu (300mV) 10k / -8dBu (300mV) 200 / +4dBu (1. 2V) 200 / +4dBu (1. 2V) 50 / -8dBu (300mV) CMA 120 4 / 22V 8 / 31V 5. 2 / 25V 20. 8 / 50V 40. 8 / 70V 83. 3 / 100V (export) CMA 120 < 375W 3. 68" (93. 5mm) 19" (482mm) 14. 33" (364mm) 17. 64 lbs. (12kg) CMA350 Output Power: Power Bandwidth (THD < 0. 5%): direct output transformer output Frequency Response (+0/-1. 5dB): direct output transformer output THD + Noise (1kHz @ rated power): Output Regulation (no load to full load) Equivalent Input Noise (mic in, 150 termination): Signal-to-Noise Ratio (20Hz-20kHz @ rated power): line inputs & telephone input master level off Input Impedance / Sensitivity mic inputs line inputs telephone inputs amplifier input stacking input patch/return input 350 Watts 20Hz~20kHz 50Hz~20kHz 20Hz~20kHz 50Hz~20kHz < 0. 25% < 0. 5dB -123dBu 78dB 98dB 6k / -77dBu (110µV) 15k / -37dBu (14mV) 600 / -60dBu (775µV) 10k / +4dBu (1. 2V) 20k / -8dBu (300mV) 10k / -8dBu (300mV) Output Impedance / Level: record output, preamp output, & line output patch/send output Amplifier Output Impedance / Level: 200 / +4dBu (1. 2V) 50 / -8dBu (300mV) 4 / 37. 4V 8 / 53V 1. 8 / 25V 7. 1 / 50V 14 / 70V (28. 6 / 100V export) Compressor: attack time release time compression ratio threshold adjust range Power Consumption (120/240VAC 60/50Hz): Dimensions (includes rack/handles & feet): height (three rack spaces) width depth Weight: < 1mSecond > 1 Second 4:1 15dB < 760 Watts 5. 24" (133mm) 19" (483mm) 14" (356mm) 51 lbs. (23. 13kg) 12 BLOCK DIAGRAM CMA30, CMA60, CMA120 priority auto. [. . . ]