13
GND
0-10 V
Dimmer actuator
with ON/OFF contact
ON/OFF
10 mA max.
1k5 ohms
Amplifier 1
0
+15V
VCA CH 1
VCA CH 2
GND
0-10 V
Dimmer actuator
with ON/OFF contact
ON/OFF
10 mA max.
1k5 ohms
Amplifier 1
0
+15V
VCA CH 1
VCA CH 2
Amplifier 2
0
+15V
VCA CH 1
VCA CH 2
A passive 0 – 10 V dimmer actuator (e. g. for the KNX bus system)
or a smart home controller with appropriate 0 – 10 V outputs can
control the volume of a single or several amplifier channels. Addi-
tional floating contacts allow for the ON/MUTE functionality.
Several amplifier channels can be controlled in parallel
using the 0 – 10 V outputs of dimmer actuators or smart
home controllers. Proceed as for the analogue volume
control panels.
Regulation Characteristics
0 V at the VCA input = 0 dB (maximum)
10 V at the VCA input = - 80 dB
15 V at the VCA input = mute
External Wiring of VCA Control Inputs
1-Channel Volume Control using a 0 – 10 V Dimmer Actuator with ON/OFF Contact
Multi-channel Volume Control using a 0 – 10 V Dimmer Actuator with ON/OFF Contact
For this purpose the 15 V DC output of the amplifier is connected
with the VCA inputs and the dimmer actuator using the provided
1.5 kohms
resistor.
