AVS Special Member
Join Date: Sep 2003
Location: Philadelphia Vicinity
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Much depends on what you want to hear in the remote room.
What most receivers' Zone 2 will do is to send 2-channel analog sources to one pair of speakers. You will not get sound from any of your HDMI, optical, or digital coax sources in Zone 2 unless you also connect an analog cable from the source.
You can achieve the same result by using a stereo tape output from the receiver to feed a separate amplifier (which can be any old used stereo receiver if you're not too picky). Or you can use both approaches, using Zone 2 to drive one pair of speakers and a separate amp to drive another.
You can usually get away with wiring two pairs of speakers in series, which raises the impedance rather than lowering it, at the expense of sound quality and amplifier performance. I wouldn't recommend it.
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