Thiel In-wall Speakers

I have an SCS for my center channel and I have been unhappy with the way it sounds. It doesn't cover the high frequencies well at all. Could my tweeter be out? I bought it used. It also has a boxy resonance in the lower midrange. Surely my tweeter isn't out!!!!! Islandflyfisher, do your SCS speakers have good high frequency response?

P.S. I am using Thiel CS2.3s for front and CS1.5s for rear.

Bufus,

My SCS's sound very natural and well balanced. I played music through them alone for six months as I was constucting my HT/Soundroom. I was amazed on the quality of sound I got through them. I will say that I am running an honest 300 WPC with good quality cables. How much power are you running to them? I would attempt to try testing your SCS by playing some good reference audio and I'm sure your ears will tell you if you have a blown driver or two. Thiel manufactured the SCS so that it could be placed on a bookself so the cabinets are constucted out of 1"MDF. They should not sound boxy at all.

Does anyone have Powerpoints or Powerplanes and use them in a multichannel music environment. I'm concerned that their limited freqency response might not work well with SACD or DVD-A.