In a recent post we talked about the RDL RU-VCA2A and RU-VCA6A Digitally Controlled Attenuators. We would like to continue this time with a run-down on various options that RDL has available for remotely controlling these products. InfoComm Product Overview Video RDL manufactures a number of different Remote Level Controls for interface with the…
Automatically Adjust Audio Level when HVAC System Turns On
Noisy HVAC System? Using just a couple of RDL modules, the level of your audio system can automatically adjust to compensate for the increased noise level when the HVAC system turns on. This is useful for background music systems, paging systems or any type of public address or mass notification system.
A contact closure provided either by a dry relay contact in the HVAC controller or an Air Flow Switch installed in the duct work can be used as a trigger to automatically make this adjustment.
The setup is fairly simple:
1.) With the contact closed, adjust the GAIN on the ST-VCA3 for the level required when the air handlers are on.