Crown 1-vcap Guía Del Usuario

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VCA2

GND

SHIELD

+10V

VCA1

NOTE: When connecting your DC supply to the control pin and ground pin, be sure to avoid 
ground loops. The control input filters out most AC voltages but a ground loop can modulate 
the gain element of the VCA if the interference is of great enough amplitude.

Often it is beneficial to control multiple amplifier channels with one control. For example, 
some channels of the amplifier may be driving full-range loudspeakers, and other channels 
driving subwoofers — all for the same room. In this case, it is convenient to control all of 
those channels with the same control. Also, for correct operation when channels are bridged, 
control inputs for the bridged channel pairs should always be wired together. 

To electrically tie control inputs together, connect the control inputs of the channels together 
with a jumper wire, as shown in Figure 3.3. Connect the tied combination to the VCAP wall 
panel, or to the external voltage source.

It is recommended (but not mandatory) that the control inputs of bridged channels be electri-
cally tied together even if the VCA option is not used for that channel pair. Wire used to con-
nect two control inputs together should be as short as possible.