Ken,

I am using 5.0 set up with 2 DSP 5000 for rear speakers. For music I do not feel the rear channel contributes much to the sound quality, other than making the sound more spacious imho.
In fact I am considering selling my rear speakers to fund for upgrade.
So I do not think i will use up all output connection from 568.2.
If I use a SW1600 I would put it at the front beside the center channel. Where do you put yours?

In response to Harry, I think the term too much subs is not that we can't set it up good rather we do not need bigger or multiple subs to do the same job as a smaller or single can do.

Harry

Dargo