Jeremy,
No it is not safe to do that. If you can hook up another
set of speakers it would be to the B terminals if the
receiver let you do so.
The problem with wiring more than one "set" of speakers
to a particular terminal is that you decrease the ohm
load which allows the amp to push more power, to the
point of amplifier failure in all likelyhood.
------------------ Brett DiMichele
Certified Audio Nut My Home Theater Site! [email protected]
Jeremy, you can get boxes which allow multiple sets of speakers to be connected to one set of amp connections AND they keep the impedance right for the amp. I have a Jamo box which allows up to 4 sets of speakers to go to one output.
DON'T just jam both sets of speaker wires into the one output on the amp.