Polk Audio SDA 2 question

I'd recommend against the SDAs. Speaker technology has come a long way since they were designed, and you can do a LOT better, unless they are super-cheap. The SDAs have a typical "saddle" shaped response curve, with exaggerated bass and exaggerated upper midrange. This makes them sound "exciting" for demos. They might be okay for home theater use, but they are far from accurate for music.

I think someone (Ferrari?) posted a review of them a while back.

they are classics for sure.