Video Asylum

Posted by Steven on February 11, 2000 at 10:45:38:

In Reply to: Connecting 2 sets of rear speakers for Dolby Digital.... posted by HL on February 11, 2000 at 08:36:41:

Yes, it's possible....

If you are using a 5.1 Reciever, you most likely have Preamp outputs
in addition to your amplifier outputs. Just connect the two rear
channel preamp outputs to a power amp that drives the two new rears.

If you have a really good receiver (high current drive) you could try
to drive both sets of speakers from the rear channel amp outputs of
your receiver. This is tricky because as you add more speakers the
impedance to the amp drops, and the current it has to drive rises
(thus the high current driving amps). If you connect two 8_Ohm
speakers to one amp terminal - it looks like 4_Ohms, connect two
4_Ohm speakers to one amp terminal - it looks like 2_Ohms. Go too
low, and you'll damage the amp (like short curcuiting the amp).

Best option is the first - using a second amp.