the problem is that your receiver also allows "A" and "B" speakers to be played at the same time....
this will cause 2 signals to be sent to the speakers at the same time - possible causing damage to the speakers and even possibly causing damage to the receiver......
you could do it if you added a switch in the speaker lines that would only allow one set of speaker wires to be hooked up to the speakers at any time....
it would be a "two in" and "one out" type of switch..... a DPDT switch (preferably with center off) on each channel (right and left) would do it....
cheers!

this will cause 2 signals to be sent to the speakers at the same time - possible causing damage to the speakers and even possibly causing damage to the receiver......
you could do it if you added a switch in the speaker lines that would only allow one set of speaker wires to be hooked up to the speakers at any time....
it would be a "two in" and "one out" type of switch..... a DPDT switch (preferably with center off) on each channel (right and left) would do it....
cheers!