Hey Ed,
I use the Hercules *** Theatre XP 6.1 with a
Monsoon 5.1 system.
The outputs on the breakout box go to the multiple
inputs on the sub. (center/sub/frontLR/rearLR)
Works very well for me...
Although I rarely use the center because it blurs
the stereo image for driving.
I think that it could be a problem with digital-input
only speaker systems. But, I'm not sure...
Also, with DVDs, I use Powerdvd which has a
software 5.1 decoder. Without that, I would need
a seperate decoder box between the GTXP and
my speakers.
I have considered using two ballsy 2.1 systems
since the Herc has pretty flexible outputs....
Good luck with it Ed.....
I love the GTXP!