[Cyberserf]

On Dec 1, 11:22*am, wrote:
On Dec 1, 8:07 am, Cyberserf wrote:

IIRC, Impedance should be equal or greater if you're going to drive
the system. Presumably an 8 ohm 7.1 system will be wanting at least
that much per channel...you can always add a 4 ohm resistor to each 4
ohm speaker to match the requisite resistance

While that MIGHT make the amplifier happy,
it's pretty much a bad idea for several reasons,
among them:

1. Assuming nominal 4-ohm impedance, you're
* *essentially doubling the amount of power dissipated
* *as pure heat: it's a waste of power.

2. Along with the above, you're looking at a substantial
* *reduction in system sensitivity and efficiency,

3. Your already non-flat response is now going to get
* * worse because the fact that you've now connected
* * a frequency-dependent attenuator due to the
* * frequency-dependent impedance variations of the speaker.

4. And how big a resistor do you think you might
* * need? Assume a measely 50 watts per channel,
* * 25 watt resistors would be the absolute minimum
* * recommended. These are easily available, where?

...or double the number of speakers
(chain them) on each channel...

It's called "series connection" and, if the speakers
are identical, is a FAR better solution than your resistor
proposal.

assuming you buy two new 8 ohms, you'll need 5 more
4 ohm speakers and one more 4 ohm sub to
double up...uhm...I think that'll make you a 12.2 system

Uhm, no it won't.

LOL...you're a funny guy. Stay Well.

-CS