I hear about the Profunder subwoofers from time to time, but wonder about usage. i.e. what's the minimum square footage a room can be, to really get the most out of them.
They're passive, does that mean they'll need an external crossover setup or can I run them directlly from the subwoofer out of my amplifier?
There's a pair on e bay going for 600 and I'd like to know if it's a worthwhile deal.
Any info would be apreciated,