[David[_3_]]

"rdclark" wrote in message
...
On Oct 20, 7:08 am, "Mike S" wrote:
Set the receiver output to 4ohms for the speakers, this
keeps the receiver a
little cooler.

Even if the TX-SR606 were rated for 4-ohm loads (which it
isn't) or
had such a switch setting (which it doesn't), this would
still be the
dumbest thing I ever heard.

If the receiver did have a 4-ohm setting and you used it
with 8 ohm
speakers, all you would do is reduce the dynamic range of
the
amplifiers by limiting the available current. This would
make no
difference (either in heat or sound) at normal listening
levels, but
it would compromise the sound quality needlessly when the
system was
operating near its limits.

Actually, if a receiver has a 8/4 - ohm switch, when in the
4 - ohm position the rail voltage is dropped on the output
stage devices. The does actually result in less heat at no
load (for a constant bias current) and also for low level
listening.

David