Researched comparisonLast updated October 2026 · How we review
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Quick Answer
The SVS SB-1000 Pro is our pick for most living rooms that want tight, deep bass: it has the most amplifier power here at 325 watts RMS, a published 20 to 270 Hz ±3 dB range, a sealed cabinet and app control, with a 5 year warranty. The Klipsch R-120SW is the value pick for movies at the lowest price here, with a 200 watt continuous amplifier and 29 to 120 Hz response. The Polk Monitor XT12 has speaker level inputs, as does the SVS, which helps with older receivers.
- SVS SB-1000 Pro 12-Inch Sealed Subwoofer: best for people who want the most amplifier power here, 325 watts RMS, in a sealed cabinet
- Klipsch R-120SW 12-Inch Powered Subwoofer: best for movie fans who want a 200 watt continuous amplifier with a 12 inch spun-copper woofer
- Polk Audio Monitor XT12 12-Inch Powered Subwoofer: best for buyers who want 24 Hz bass and speaker level inputs for an older receiver
Prices as of October 20, 2026, 7:16 am CT.
A subwoofer adds the low bass that bookshelf speakers and most soundbars cannot reach, which is what makes movie explosions and music feel full in a living room. We compared three 12 inch powered subwoofers from Klipsch, Polk and SVS, all with a built-in amplifier and a line level or LFE input for a home theater receiver.
How We Chose
We picked three well-known home audio brands and matched the class: each is a powered subwoofer with a single 12 inch front driver. They are not identical: the Klipsch and Polk are ported cabinets, while the SVS is sealed, and the brands publish frequency response in different ways. Klipsch and SVS give a ±3 dB range, while Polk gives an overall range without a tolerance, so we do not rank the three on bass extension alone. The SVS weight is measured with its grille, and the other two brands do not say whether the grille is included, so we do not rank weights. Specs come from each manufacturer’s own product pages, spec sheets and manuals, and each card lists the warranty from the brand’s own pages. Prices are the Amazon prices on the date shown.
The Lineup
Specs come from each manufacturer’s own pages, spec sheets and manuals. †Polk Monitor XT12: Polk lists an overall frequency response without a ±dB tolerance. ‡SVS SB-1000 Pro: weight is with the grille. Prices as of October 20, 2026, 7:16 am CT. Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply to the purchase of this product. Amazon may show a different seller than the brand or Amazon.com. Certain content that appears on this site comes from Amazon. This content is provided “as is” and is subject to change or removal at any time.
SVS SB-1000 Pro 12-Inch Sealed Subwoofer
$599.00 as of Oct 20, 2026, 7:16 am CT on Amazon · Most amplifier power, app control
Best for: people who want the most amplifier power here, 325 watts RMS, in a sealed cabinet
SVS’s page for the SB-1000 Pro lists a 12 inch fiber composite driver with 13.3 mm of excursion, a Sledge STA-325D amplifier with 325 watts RMS and 820+ watts peak, a sealed cabinet and a frequency response of 20 to 270 Hz ±3 dB. It has RCA line inputs, speaker level inputs and a Bluetooth app for the built-in DSP, and SVS lists 13.5 by 13 by 14.76 inches and 26 pounds with the grille. We like it for music and movies in the same room, because a sealed cabinet with app tuning keeps bass tight without boom.
Warranty: 5 years
Check Price on Amazon →Klipsch R-120SW 12-Inch Powered Subwoofer
$329.00 as of Oct 20, 2026, 7:16 am CT on Amazon · Lowest price, strong movie bass
Best for: movie fans who want a 200 watt continuous amplifier with a 12 inch spun-copper woofer
Klipsch’s page and spec sheet for the R-120SW list a 12 inch front-firing spun-copper IMG woofer, an all-digital amplifier with 200 watts continuous and 400 watts peak, a frequency response of 29 to 120 Hz ±3 dB, and a bass-reflex cabinet with a rear-firing port. It has line level and LFE RCA inputs, measures 16.5 by 14 by 19.2 inches and weighs 31 pounds. We like it for a home theater, because the ported design puts a lot of output into movie effects for the price.
Warranty: 5 years woofer and cabinet, 2 years electronics
Check Price on Amazon →Polk Audio Monitor XT12 12-Inch Powered Subwoofer
$399.00 as of Oct 20, 2026, 7:16 am CT on Amazon · Speaker level inputs, 24 Hz bass
Best for: buyers who want 24 Hz bass and speaker level inputs for an older receiver
Polk’s page for the Monitor XT12 lists a 12 inch bi-laminate paper driver, a Class AB amplifier, a ported bass reflex cabinet, a single LFE RCA input and left and right speaker level binding posts. The owner’s manual lists 50 watts continuous and 100 watts peak, and an overall frequency response of 24 to 160 Hz. Polk lists 16 by 16.4 by 17.9 inches and 39 pounds. We like it for a first home theater, because the speaker level inputs let it work with stereo receivers that have no subwoofer output.
Warranty: 5 years woofer and cabinet, 3 years electronics
Check Price on Amazon →Our Take
Pick the SVS SB-1000 Pro for the most amplifier power, a sealed cabinet, app control and a 5 year warranty. Pick the Klipsch R-120SW for strong movie bass from a 200 watt continuous amplifier at the lowest price here. Pick the Polk Monitor XT12 for speaker level inputs that suit an older stereo receiver.
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Frequently Asked Questions
Is a sealed or ported subwoofer better?
A sealed cabinet like the SVS SB-1000 Pro tends to give tighter, more controlled bass, while ported cabinets like the Klipsch R-120SW and Polk Monitor XT12 use a port to add output in the deepest notes. Many people pick sealed for music and ported for movies.
Which subwoofer here has the most power?
SVS lists 325 watts RMS and 820+ watts peak for the SB-1000 Pro. Klipsch lists 200 watts continuous and 400 watts peak for the R-120SW, and Polk lists 50 watts continuous and 100 watts peak for the Monitor XT12.
Can I connect these to a receiver without a subwoofer output?
The Polk Monitor XT12 and the SVS SB-1000 Pro both have speaker level inputs, so they can connect to a stereo receiver’s speaker outputs. The Klipsch R-120SW has line level and LFE RCA inputs only.
How deep do these subwoofers go?
SVS lists 20 to 270 Hz ±3 dB, Klipsch lists 29 to 120 Hz ±3 dB, and Polk lists an overall range of 24 to 160 Hz without a tolerance, so the Polk figure is not directly comparable.
What warranty do they have?
SVS lists 5 years. Klipsch lists 5 years on the woofer and cabinet and 2 years on electronics, and Polk lists 5 years on the woofer and cabinet and 3 years on the electronics and amplifier.
