User manual BIAMP EQ 282-281

[. . . ] Optional VCA remote control cards may be added for controlling mixer input/output levels. Designed for in-wall or surface mounting, with integral security cover, the EQ 282-281 is UL/C-UL listed and is covered by a five-year warranty. · · · · · · · · · · · · · · · · · six balanced microphone/line level mixer input channels two balanced/summing line level mixer input channels high & low tone controls on each mixer input channel independent main & aux level controls on each channel trim control & peak indicator on each mic/line input channel additional balanced line input for emergency page interrupt main & aux mixer outputs with master level controls mixer functions provided on screw-driver adjustable controls optional VCA cards for remote control of input/output levels 9-band graphic equalization integrated at amplifier input patch points provided for mixer outputs & equalizer input mixer inputs & outputs on front panel plug-in barrier strips output taps for standard and distributed speaker systems +48 Volt phantom power selectable for microphone inputs "in-wall" or "surface-mount" chassis with security cover UL and C-UL listed covered by Biamp Systems' five-year warranty IMPORTANT SAFETY INFORMATION Read these instructions. Do not block any of the ventilation openings. [. . . ] For unbalanced output, wire high to (+) and ground to ( ), leaving () un-connected. An additional plug-in barrier strip connector (to the right of Main Out) provides unbalanced access to the mixer Main Out, and to the Main Equalizer input. From the factory, a jumper wire between "Main Out" and "Main EQ In" routes signal from the Main Out control to the Main Equalizer and the Main Amplifier. Signal processing may be inserted between the mixer and the equalizer by first removing the jumper wire, then wiring "Main Out" to processor input and "main EQ In" to processor 3 output, using a common ground ( ). To access unbalanced Main Out from the mixer (to feed recorders, auxiliary amps, etc. ) wire high to "Main Out" and ground to ( ), without removing the jumper wire. NOTE: If the jumper is removed, the main output and equalizer input are separated (no signal passes between them). Remote level control is optional (see pg. Aux Out: The Aux Out screw-driver control sets the overall level of signals sent (from channel Aux controls) to the Aux Out connector. The Aux Out connector is a plug-in barrier strip, which provides a balanced line-level output for feeding external equipment (recorders, auxiliary amplifiers, etc. ). For unbalanced output, wire high to (+) and ground to ( ), leaving () un-connected. Remote level control is optional (see pg. The mounting location should be capable of supporting a weight of at least 75 pounds. Surface mounted units ("SMB") should be located near a dedicated AC power source, capable of providing the required power for the unit being installed. When flush mounted ("IWB"), the front surface of the backbox must be flush with the finished surface. Failure to do so may cause improper fit of the chassis (or security cover). For proper system grounding, the duplex outlet ground, enclosure, backbox, and conduit or raceway must be bonded together and connected to earth ground. For safety and conformance to codes, this bonding of all metal surfaces should be performed by a qualified electrician during installation of the backbox. Back-Box Grounding: 1) 2) 3) 4) The back-box must be electrically bonded to the ground conductor of the incoming power cable. Ground to the box should be bonded to the stud provided in the cable tray inside the back-box. Grounding shall be made with minimum #18 AWG wire, preferably green in color. Grounding shall be in accordance with NEC and all applicable wiring codes. Safety Ground: This symbol identifies the appropriate back-box grounding stud, located on the lower portion of the cable tray at the bottom right of the back-box. 4 INSTALLATION IWB (In Wall Box) SMB (Surface Mount Box) 5 INSTALLATION Chassis Installation: The chassis front panel includes two male hinges, which must be secured to the right side-rail of the backbox (use the screws, lock-washers, and nuts provided). Be sure to install the male hinges with the pin pointing up and towards the inside of the backbox. [. . . ] For automatic muting (as from telephone paging), an Override Sensitivity adjustment should be made (see diagram on next page). Once Override Input settings are made, Override Sensitivity may be adjusted for proper muting sensitivity. Override Sensitivity should be adjusted so that muting is easily triggered by Override Input (paging) signals, but not by ambient or background noises on the paging line. The Override Input Active indicator will remain lit during muting. 8 CH 8 -12V +12V +10V GND OUT IN -12V +12V +10V GND OUT IN -12V +12V +10V GND OUT IN -12V +12V +10V GND OUT IN CH 7 CH 6 CH 5 CH 4 -12V +12V +10V GND OUT IN CH 3 -12V +12V +10V GND OUT IN CH 2 CH 1 -12V +12V +10V GND OUT IN -12V +12V +10V GND OUT IN REMOTE CONTROL MAX MIN Mixer Circuit Board OVERRIDE SENSITIVITY MAIN AUX 9 IN OUT GND +10V +12V -12V IN OUT GND +10V +12V -12V APPLICATIONS 250 Watt Distributed System plus Hearing Assistance & Recording Outputs IWA 250 channels 1 aux 2 aux 3 aux 4 aux 5 aux 6 aux 7 aux 8 aux +15 C UL R power US LISTED 52SJ 120V~ 60Hz 900 Watts main equalizer +15 max Main Amp. [. . . ]