Quote: Originally Posted by nkotch
ONLY if the 4ch amp has separate inputs for front and rear speakers. Just from what I've seen they just use one set of inputs to feed all 4 channels so in that case you won't be able to do true surround sound.
THis is actually never the case...i have personally used around 6 or 7 different 4 channel amps and they've all had seperate inputs for front and rear...left and right. Only the jl 300/4 had the OPTION of using the front inputs as rear inputs (to save you from running an extra set of cables), but generally they will have seperate inputs.
Like i said....it's possible only if your soundcard supports phantom center.