Help with math and science of tri-wiring?

Actually, this is a very interesting question! I have never thought of doing that. KR4, is there a reason why all the wires should be connected to the same tap? I mean, on my amp ... the 4, 8, and 16 Ohm taps are just slightly fewer coils on the output transformer ...

Jsterrit, perhaps Jon Risch's website can help you? See here:

http://www.geocities.com/jonrisch/biwiring.htm

Here is another good article on the subject. I don't necessarily agree with everything he says, but he's right on at least two counts - cable length and gauge matter. The article also contains a table of recommended cable gauge and length for the impedance load of the speaker:

http://www.roger-russell.com/wire/wire.htm

Hope this helps.

Keith

Yes Cford, but on some speakers the impedance variation between the mid/tweeter and the woofer is quite different. The "nominal impedance" is an average of the impedance curve. My speakers can be tri-wired. Admittedly mine are a special case - tweeter's impedance is 600 Ohm (!!), Midrange horn 8 Ohm, and woofer about 4 Ohm. Which made me suddenly wonder what would happen if I connected them to different output taps ...