Perosnally if your looking for a great sub or subs for your 2 channel audio section I would look at Revel's B15 sub.
I used to sell Rel and though they are a good sub, for the money they are nowhere near the sound quality of the B15.
The B15 sub from Revel( www.revelspeakers.com ) is unique in which its probably the most flexible sub on the planet. It has both single ended and xlr inputs/outputs, along with level,frequency, and selectable 24/48db per octave lowpass, along with selectable high pass for your mains. Now add on top of this the fact that is has an infinitely variable 3 band EQ with boost/Q/freq control contours and a special cd that allows you to dial the sub into ANY room environment. And this is just the control set.
The actual sub is a sealed 15" long throw excursion sub with a 1000 watt amplifier(1400 watt dynamic ability)coupled to a 2.25" mdf braced cabinet that is almost resonant free. You can find these online for under $2000 used or about $2300 new. Its the absolute biggest bargain on the planet. The Rel's are garbage in terms of SQ compared to these at any pricepoint. ANyone who has ever owned a B15 will tell you there is no upgrade in terms of SQ from this sub. ANd thats a fact regardless of money spent.
I used to sell Rel and though they are a good sub, for the money they are nowhere near the sound quality of the B15.
The B15 sub from Revel( www.revelspeakers.com ) is unique in which its probably the most flexible sub on the planet. It has both single ended and xlr inputs/outputs, along with level,frequency, and selectable 24/48db per octave lowpass, along with selectable high pass for your mains. Now add on top of this the fact that is has an infinitely variable 3 band EQ with boost/Q/freq control contours and a special cd that allows you to dial the sub into ANY room environment. And this is just the control set.
The actual sub is a sealed 15" long throw excursion sub with a 1000 watt amplifier(1400 watt dynamic ability)coupled to a 2.25" mdf braced cabinet that is almost resonant free. You can find these online for under $2000 used or about $2300 new. Its the absolute biggest bargain on the planet. The Rel's are garbage in terms of SQ compared to these at any pricepoint. ANyone who has ever owned a B15 will tell you there is no upgrade in terms of SQ from this sub. ANd thats a fact regardless of money spent.