Scott,

The Bose sub is a bit smaller, and it does not move as much air because it's not a long-throw sub like the Z-5500. The 5500 really rocks, especially when you want a gut-thumping bass to kick-start the dancing crowd.

If I can find a few free hours this week I'll A/B them to see which one does the best. I suspect the Logitech will win out in this category because of the design.

I'm still tuning and tweaking things for the Bose, and the way it now sounds I believe I'll have everything the way I want it in the next few days. When I get done, I'll post the results and settings that work best for me.

Cheers,

Gary