OK... I have a new setup running. KEf Q7s for fronts, Q1's for surrounds, and a Q9c for my center channel running off of a Denon 3803. Setting the c.c. atop my television, I have noticed that powering the TV on causes a very low hum to come from the center channel. Why might this be, and what can I do to elliminate it? The TV in question is a Toshiba 24" TV/DVD/VCR combination (this is not my primary viewing location, but a temporary location i will be at for a while. I know the combos are not the way to go, but in this case I got the TV for free from American Express Rewards and wasn't about to turn it down) The speakers are perfectly silent when the TV is not on. Can this low hum in fact be negatively affecting my sound quality? Thanks for any help available.