All,

I just had the following problem today...I tried to connect my Denon 3803 to the following:

Polk LSi 15 - front (4 ohm)
Polk LSi C - center (4 ohm)
Polk Fxi 30 - rears (8 ohm)

After about 20 minutes playing in 5 channel mode the reciever cuts off. I'm not playing it
loud. I call Tweeter. They claim AVRs tend to have a problem playing speakers with mixed
impedences and may shutdown in this configuration. The Denon has no impedence selector. This sounds fishy to me and if it's true sounds lame on Denon's part.

If it is true (I will continue to research) it appears I may need to buy a seperate amp to
drive the 8 ohm rears. This is still cheaper than upgrading the rears to the $900 LSi FX's.

Does this make sense to anyone out there?

Larry