+1 @big_greg
I run a pair of Rhythmic F12SE subs (with the high gain option) alongside 1980s vintage Klipsch Belles (Sensitivity: 104 dB @ 1watt/1meter) and get good results with lower listening levels of blues/jazz. I run them all off a 20 wpc Quicksliver integrated tube amp. Simple and not overly elegant - but sounds pretty decent. As always, YMMV.