B&K AV2600 CHANNEL CONTROL & MUTING , MASTER CONTROL & MUTING , LEVEL CONTROL

CHANNEL CONTROL & MUTING

Each pair of amplifier channels has its own 1/8” mini control input / output (pass through) jack to provide remote

switching of the amplifier audio mute on/off feature. The control input circuit is designed to work as Tip Pos. (+)

and Ring Neg. (-). A minimum of 5VDC @ 1 mA is recommended, and is compatible with up to 24V AC or DC. A

preamplifier’s control output, such as is provided with B&K series preamplifiers, can be utilized to provide a

control signal to the AV2600. When ‘Local’ channel control muting is desired, the proper DIP switch configuration

must be set.

The AV2600 is designed to provide for single switching of the amplifier audio mute on/off feature on any pair of

amplifier channels (1-2, 3-4 or 5-6) with it’s DIP switch ‘MASTER’ set to ON. The Master control output is a pass

through of the Master control input. The control input circuit is designed to work as Tip Pos. (+) and Ring Neg. (-).

A control source capable of sourcing a minimum of 5 VDC @ 1 mA is recommended, and is compatible with up to

24V AC or DC. (The Master control output DOES NOT source any voltage directly, it will only PASS

through the input voltage at it’s input).

Note: When an 1/8" mini plug is inserted into the ‘Local’ amplifier pairs CTRL IN jack, the Master Control signal is

automatically disabled for that amplifier pair.

If more than one AV2600 or other units are to be controlled, the control signal can be expanded to include each

successive unit by simply running a 1/8" mini cable from the CTRL OUT connector of the first amplifier to the

CTRL IN connector of the next unit (commonly referred to as ‘daisy chaining’).

*Note: A control voltage is for muting control only. Each amplifier must be connected to its own source of AC

power in order for it to operate.

Figure 2

Each pair of amplifier channels have their own ‘Local’ level control. It may be used to equally attenuate the level

for both amplifiers pairs. The level controls may be reconfigured so that they are bypassed (recommended for

high current output paralleling applications) by moving the jumpers inside the unit. See AV2600's internal

volume selection.

Default from the factory, the level controls are set to full clockwise (no attenuation). Note, there is a single level

control for each pair of amplifiers (1-2, 3-4 and 5-6) therefore, care should be taken in the assignment of the audio

signal source when used in applications when there is no relationship between the two amplifier pairs (i.e..

separate source material, one from a DVD player the other from a VCR.) Another example might be when using 4

ohm and 8 ohm speakers together, the 4 ohm (CH 1) speaker may sound louder then the 8 ohm (CH 2) speaker

when set to the same level.