Vandersteen 2w and 2wq drive off of the amps output, but they do place a passive filter (also known as crossover) between the pre and the amp. I do not know that would interact with the passive, but they are fantastic subwoofers.
Subwoofer w. Passive Line Stage?
I'm using the Placette passive volume control to drive a Mac Power amp. If I want to add a powered subwoofer to my main 2 speakers, is there a way to do so by only tapping into the power amp's output at the speaker terminals? The Placette has only one line out and lacks the current to drive two amp inputs.
Bassless
Bassless