Dumb lo-fi question.

If you don’t want to take a chance on cutting your impedance in half and possibly fry the amp or destroy the speakers, get an external speaker selector box with matching impedance so the amp sees an 8 ohm load even with 6 speakers playing. PM me and I can tell you what units I have used for whole house (master bedroom and bathroom, library room, outside, living room) audio using Yamaha or onkyo receivers or go search for matching impedance selector boxes for 4 or 6 pairs of speakers.

organicsound, you mention bi-wiring one set of speakers by using A+B.

I just put in an offer on a set of low end Polk Audio towers with have double connectors on the back and claim to have a separate crossover for the two woofers (that they call subwoofers) while there is another crossover for the two mids and the tweeter. They are 8 ohm speakers.

On such low end speakers and with my old receiver is there any chance that bi-wiring this way would provide any benefit?

I'm assuming that this would not put any additional strain on the receiver?

Bi-wiring is a waste of effort on a receiver of this sort. If you did  bi-wire the speakers, you would only use one speaker output (A or B) and not both. 

Good to know, thanks.

To complete this thread, I did get the used Polk Audio Monitor 70s to replace my old Bose 2.2s. Got the Polks for $180, near mint condition.

I’m really amazed how well this old receiver drives these large speakers which sound great for Polk’s lower end line. Of course they sound way better than the Bose. Now I will enjoy listening to music down at the cabin a lot more.

But, I have no plans to run them and the Bose at the same time. However, I probably will keep the Bose down there and put them on the porch when the weather is nice.