15 in - 15.9 in Separate Speakers

The Bottom Line: If you don't mind its uninspired aesthetics, the Definitive Technology ProSub 800 is a mighty little subwoofer and a fine match for its SSA soundbars and ProCinema satellite speakers.

Specs: subwoofer, 10.3 in x 15.7 in x 12.9 in, Active, 300 Watt

The Bottom Line: The CSW-10 is expensive, but its combination of power and finesse makes it a serious value.

Specs: subwoofer, 13.3 in x 15.4 in x 14 in, Black, Active, 650 Watt

The Bottom Line: The CSW-10 is expensive, but its combination of power and finesse makes it a serious value.

Specs: subwoofer, 13.3 in x 15.4 in x 14 in, Cherry, Active, 650 Watt

The Bottom Line: The ASW500 can get the job done, but you can find better performers for less money.

Specs: subwoofer, 13.9 in x 15.8 in x 16.3 in, Black ash, Active, 22 KOhm, 70 Watt

The Bottom Line: This sub is a great choice and a good value.

Specs: subwoofer, 14 in x 15 in x 16 in, Black, Active, 150 Watt

Specs: subwoofer, 14.6 in x 15.6 in x 14.6 in, High-gloss black, Active, 300 Watt

Specs: subwoofer, 13.4 in x 15.2 in x 13.4 in, Black, Active, 50 Watt

Specs: 7.8 in x 15.5 in x 41.5 in, Medium cherry, 2-way Passive, 6 Ohm, 91 dB

Specs: floor-standing, 10.2 in x 15 in x 42.2 in, Cherry, 4-way Passive, 8 Ohm, 91 dB, 125 Watt

Specs: floor-standing, 8 in x 15 in x 39 in, Black, 2-way Passive, 8 Ohm, 95.5 dB, 100 Watt