Hello, Well, I finally upgraded my 12 year old receiver last Wednesday. Picked up a Harman/Kardon AVR-525 @ Circuit City. I had always planned to use my TV's speakers for the center channel, since it has this capability. TV is a Toshiba TW65X81. 65" widescreen RPTV. I've got a small problem, though. Actually, two small problems. 1. The TV's speakers are too loud. 1A: I've switched them to input only, so the TV's amplifier should not be engaged (TV's volume is all the way down to zero). 1B: I've set the volume adjustments on the receiver to -10dB for the center, and +10dB for everything else. This is tolerable, but I still feel that the center is a little louder than it should be. The volume adjustments are maxed out in both directions. -10 to +10 is the range, so this is as good as I can get it. I don't think I should have to take the center all the way down and bring the others all the way up to get overall volume levels close to decent. Seems extreme to me. 2. The TV's speakers buzz. It's not a loud buzz, and you can't hear it through 95% of any given movie, but it is there and it bothers me. None of my other speakers buzz. They used to, with my old amp, but the HK eliminated all of that. Except, of course, the center. It's not the wiring: I prewired the house and took care to not run parallel to AC current. I also switched to a different wiring pair to see if that made a difference. It did not. So, this is where I'm at. Is anyone else successfully using the speakers as a center channel on a large Toshiba set? I'd love to hear from more Toshiba owners regarding this. Secretly, I'm almost hoping something is wrong with my TV that isn't repairable, so I can take advantage of that extended warranty and get the latest model. But, I'd really rather not go through the hassle. I just want mine to work properly. Thank you!