If you’ve ever used RDL’s ST-VCA3, RU-VCA2 or RU-VCA2D voltage controlled amplifiers, you are without a doubt familiar with the RLC10K remote level control. This premium quality, all-metal remote control is well known for its ease of installation and professional, aesthetic appearance. What might not be so well known is how easily the RCL10K can…
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.