altchavez OP
Thanks , my speakers are a pair of Dynaudio Contour 20
These shouldn’t be a problem not too hard to drive with either Bi-Polar or Mosfet amps even Class-D or Tube, in either reflex (ported) or infinite-baffle modes
https://www.stereophile.com/images/417DC20fig1.jpg
https://www.stereophile.com/images/417DC20fig2.jpg
Though there is a combination of 5.2 ohms and –38° capacitive phase angle at 120Hz, the Contour 20 will work well with tube amplifiers, as Herb found.
Cheers George