Level Controls - B&K ST3140 Owner's Manual

If the control function is desired, each unit in the system must remain connected at all
times and the control must be enabled. To enable the control function, the CTRL
ENABLE button must be out for each controllable amplifier in the system. For more
information on the amplifiers output status under various control conditions, refer to the
table below.
@ CTRL IN
Signal
Signal
No Signal
No Signal
*Note: The 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.
The level controls are an option that can be added to the amplifier. If your amplifier has
this option, the balanced inputs are not present.
balanced inputs on an amplifier.
There are three level controls on the back of the amplifier. One level control for each
channel.
When using the level controls, first start with them turned all the way up (clockwise).
Then adjust them according to your system requirements to match the sound level
coming from each speaker.
Button position
OUT
IN
OUT
IN

Level controls

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Output status
Sound
Sound
Mute
Sound
You can not have level controls and
@ CTRL OUT
Signal
Signal
No Signal
Signal
13000 rev 0005