About Subwoofer Amplifiers
Passive subwoofers need to be powered by an amplifier in order to use them in your home audio or home cinema setups.
To do this in the best and most reliable way you’ll need a subwoofer amplifier.
These amplifiers are designed specifically to power your mono passive subwoofers to the best of their capabilities.
You’ll then simply connect the subwoofer amplifier to your AV Receiver or stereo amplifier with an RCA cable from the sub amplifier to the pre out of your amplifier.
With the Monitor Audio IWA-250 you can connect up to two passive subwoofers for dual sub setups.