Did you think about what I said using the parallel + series setup for the wall of sound?

If you are talking about wiring two pairs of speakers per amp, I'd rather not. The PC2002M has only one pair of speaker outs. Plus, I like the idea of a healthy power reserve as a hedge against clipping.

I was think more along the lines of 4 pairs for an 8 ohm load per channel.

That's pretty much what that amp was designed for isn't it?

Damage: I don't understand what your idea is. Yes, the amp is designed for 8 ohm, power doubles at 4 ohm and almost doubles again at 2 ohm.