Opinions on Pioneer CS series speakers

Hi Saki70,
I have to agree with Loomis... I do see these go from $100 to $400 on occasion. They can be a bit tubby in the mid bass, but in the right room bass can be surprisingly good. The top mid range and top end are not world class by any means, but are respectable. If you buy them right and plan on keeping them, these speakers respond to modifications quite well.... i.e. cap replacements, and a little cone damping go quite far...
I would also recommend in a semi vintage speaker a JBL L100T or maybe one of the ESS models. In all the above be aware of rotting surrounds that you may need to deal with.
As far as SET Friendly. I have never seen true impedance or phase angle curves on any of these speakers, You will need to find someone with direct experience. I hope this helps, Tim

+1 on Loomis especially the Tekton/Zu recommendation. A used one would be a better sounding option and within your budget.

Wonderful , thank you .

Happy Tunes

If you haven't already, go to 6moons.com. They review a lot of low power gear.

If you want a pair because you think they are cool or you can get them on the cheap, by all means do so. If you want them because you think they are a great set of speakers...I think your money would be better spend elsewhere.

This is coming from a guy that has a pair of CS-99a's that I use on a daily basis (because they are cool, not because they sound amazing).