You could use something like this.
Amazon.com
Thank you, have you used one of those before? Just got one today, but there is no manual.
I don't want to fry anything, so would like to double check, is the following assumption is correct?
Switch position 1:
Amp 1:
* Connect both cables of the Left speaker output to 5.
* Connect both cables of the Right speaker output to 1.
Speakers:
* Connect both Left speaker cables to 6.
* Connect both Right speaker cables to 2.
Switch position 2
Amp 2:
* Connect both cables of the Left speaker output to 7.
* Connect both cables of the Right speaker output to 3.
Speakers:
* Connect both Left speaker cables to 8.
* Connect both Right speaker cables to 4.
So, speakers would need to have 4 cables (2 sets of 2 cables) coming out of the binding posts?
One set for amp 1, the other set for amp 2?
BTW, with the V3 48V, I think it might have been an issue with the PSU. Right now the amp isn't as heavy and boomy.
Maybe the PSU behaves differently after being in below freezing temperature for a long delivery time?