Looking for a good small subwoofer...


A friend bought two smallish horn speakers, wants to beef up the bass with a pair of small subs, (preferably piano black) with built in amps and active crossovers to send line-level high-pass signal back to his EL84 class-A amp to the main  speakers.
These aren't going to get super loud, just fill in some low bass.

Any ideas?

Thanks,
Steve.

swann

Polk Audio PSW505 12". Price varies on Amazon. Currently $428. I paid $250 a few years ago. Decent performance.

there are often pairs of rel t5i/x or t7i/x that appear used.. they are terrific

I use a pair of KEF KC62 subs to augment KEF LS50 Wireless II speakers with excellent result.  The KEF app makes set up easy.