12-01-2007, 08:06 PM
I like the Logitech subs in black. They really don't look any more like "computer subs" than any other black box. The one I have works very well. I'm sure the Tivoli will be OK too. Subwoofer driver size for a system like this is not very important as long as it's 5" or more, and 10W or more is a good number for power to the subwoofer. Bass response to 50 Hz or lower will be just fine. It'll sound like real music to most.