As above, i want to impliment the bi-amping facility on my onkyo 605. Looking at the 605 manual, it uses the surround back speakers as the second amp output. So this means for my 5.1 speaker setup i should run my back speakers from the side surround speaker outputs? How will this effect the different listening modes ie DD, DTS etc as i will have side surround as opposed to to rear surround as it were? Or will the 605 compensate and correct it? It does say in the manual it is 'able to drive up to 5.1 speakers in the main room' but doesn't suggest how to connect the rear speakers up. Doing this on a Aegis Evo 3 fronts (8 ohms) which are set up for bi-amping or bi-wiring as required.