Originally Posted by NoTLaDStyle
on the same amp, no. It will off balance the output signal which for some reason will damage the amp over time.
I beleive this is only true for L&R channels, the front and rears are totally separate circuits so you can probably run 2ohm stereo on the front two and 4ohm briged on the rear two
I don't see how this is possible. Impedance varies with frequency, so the actual load seen by the amp would vary as well. Since we're dealing with a stereo signal, the frequencies seen by the left and right will be different often, if not always. As long as neither channel drops below the minimum of the amp, there should not be a problem.
I've often used only one channel of a stereo amp, to drive a center channel for example, leaving the other open, with no ill effect.
I've been wrong before, however, so any data you have supporting the 'don't do it' theory you presented will be gladly analyzed.
Toby