Short answer: the Onkyo SKW-204. It ranks #3 of 48 subwoofers by sound quality, rated 3.8/5, at $299; the Definitive Technology SuperCube 2000 ranks #5, rated 3.7/5, and costs $599, which makes this an easy call rather than a real tradeoff.
One note: the Definitive Technology SuperCube 2000 is no longer sold new, but at #5 of 48 subwoofers by sound quality it still outranks most current models, so used is worth considering.
Buy the Onkyo SKW-204. It is rated higher for sound quality than the Definitive Technology SuperCube 2000 and costs less, which settles it without a real tradeoff to make.
Looking for alternatives? See the complete Subwoofers rankings.
Specifications Side By Side
| Definitive Technology SuperCube 2000 | Onkyo SKW-204 | |
|---|---|---|
| Price | $599 Discontinued | $299 Discontinued |
| Ranked | #5 of 48 in Small Home Subwoofers (Under 30 lbs) | #3 of 48 in Small Home Subwoofers (Under 30 lbs) |
| Enclosure | passive radiator | ported, front |
| Output SPL at 20 Hz | 80.1 dB | 77.3 dB |
| Output SPL at 25 Hz | 94.7 dB | 90.1 dB |
| Output SPL at 31.5 Hz | 103.6 dB | 103.3 dB |
| Output SPL at 40 Hz | 109.4 dB | 108.7 dB |
| Output SPL at 50 Hz | 115.0 dB | 114.0 dB |
| Output SPL at 63 Hz | 116.3 dB | 119.6 dB |
| Output SPL at 80 Hz | 116.3 dB | 121.4 dB |
| CEA-2010-A Average (40-80Hz) | 114.2 dB | 115.9 dB |
| Dimensions | 10.8"H x 10.2"W x 10.9"D (273.1 x 260.3 x 276.4 mm) | 18.6"H x 10.8"W x 16.9"D (472.9 x 274.6 x 428.5 mm) |
| Warranty | 5/3 | - |
| Cabinet Color | black | black |
| Country | United States | Japan |
| Measurement Source | Brent Butterworth | Brent Butterworth |
| Discontinued | Yes | Yes |
| Weight | 24.9 lbs (11.3 kg) | 26 lbs (11.8 kg) |
| Drivers | 7.5" (190mm) driver | 10" (254mm) driver |
Related Speaker Comparisons
More worthwhile head-to-heads for Onkyo SKW-204:
- Onkyo SKW-204 vs SVS SB-1000
- SVS SB-1000 PRO vs Onkyo SKW-204
- SVS 3000 Micro vs Onkyo SKW-204
- Velodyne Acoustics SPL-1200 Series II vs Onkyo SKW-204
- Onkyo SKW-204 vs Polk Audio PSW10
Prices on this page were last checked September 23, 2026 at 11:24 PM UTC. Product prices and availability are accurate as of that date/time and are subject to change; the price and availability shown on Amazon at the time of purchase will apply to the purchase of this product.
As an eBay Partner, we may be compensated if you make a purchase.
The Two Speakers In Full
Definitive Technology SuperCube 2000: $599 Discontinued eBay
Pros: Independent CEA-2010 testing records 80.1 dB at 20 Hz and 114.2 dB through 40-80 Hz. The passive radiator enclosure with 7.5” (190mm) driver delivers substantial upper-bass output for movie effects and music.
Cons: Deep-bass output is more limited than the strong 40-80 Hz result suggests, so it is not the right choice when the lowest movie effects are the priority. The 273.1H x 260.3W x 276.4D mm cabinet and 11.3 kg mass still require deliberate placement and calibration. Discontinued.
Full Definitive Technology SuperCube 2000 review and specifications →
| CEA-2010-A Average (40-80Hz) | 114.2 dB |
|---|---|
| Cabinet Color | black |
| Country | United States |
| Dimensions | 10.8"H x 10.2"W x 10.9"D (273.1 x 260.3 x 276.4 mm) |
| Discontinued | Yes |
| Drivers | 7.5" (190mm) driver |
| Enclosure | passive radiator |
| Measurement Source | Brent Butterworth |
| Output SPL at 20 Hz | 80.1 dB |
| Output SPL at 25 Hz | 94.7 dB |
| Output SPL at 31.5 Hz | 103.6 dB |
| Output SPL at 40 Hz | 109.4 dB |
| Output SPL at 50 Hz | 115.0 dB |
| Output SPL at 63 Hz | 116.3 dB |
| Output SPL at 80 Hz | 116.3 dB |
| Warranty | 5/3 |
| Weight | 24.9 lbs (11.3 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- Independently measured by Brent Butterworth; the published figures above come from this ASR subwoofer measurement thread.
- Head-to-Head Comparisons
Onkyo SKW-204: $299 Discontinued eBay
Pros: Independent CEA-2010 testing records 77.3 dB at 20 Hz and 115.9 dB through 40-80 Hz. The ported, front enclosure with 10” (254mm) driver delivers substantial upper-bass output for movie effects and music.
Cons: Deep-bass output is more limited than the strong 40-80 Hz result suggests, so it is not the right choice when the lowest movie effects are the priority. The 472.9H x 274.6W x 428.5D mm cabinet and 11.8 kg mass still require deliberate placement and calibration. Discontinued.
Full Onkyo SKW-204 review and specifications →
| CEA-2010-A Average (40-80Hz) | 115.9 dB |
|---|---|
| Cabinet Color | black |
| Country | Japan |
| Dimensions | 18.6"H x 10.8"W x 16.9"D (472.9 x 274.6 x 428.5 mm) |
| Discontinued | Yes |
| Drivers | 10" (254mm) driver |
| Enclosure | ported, front |
| Measurement Source | Brent Butterworth |
| Output SPL at 20 Hz | 77.3 dB |
| Output SPL at 25 Hz | 90.1 dB |
| Output SPL at 31.5 Hz | 103.3 dB |
| Output SPL at 40 Hz | 108.7 dB |
| Output SPL at 50 Hz | 114.0 dB |
| Output SPL at 63 Hz | 119.6 dB |
| Output SPL at 80 Hz | 121.4 dB |
| Weight | 26 lbs (11.8 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- Independently measured by Brent Butterworth; the published figures above come from this ASR subwoofer measurement thread.
- Head-to-Head Comparisons
- Onkyo SKW-204 vs SVS SB-1000 PRO
- Onkyo SKW-204 vs SVS SB-1000
- Onkyo SKW-204 vs SVS 3000 Micro
- Onkyo SKW-204 vs Velodyne Acoustics SPL-1200 Series II
- Onkyo SKW-204 vs Polk Audio PSW10
- Onkyo SKW-204 vs GoldenEar ForceField 3
- Onkyo SKW-204 vs MartinLogan Dynamo 700w
- Onkyo SKW-204 vs ELAC IW-S10EQ in-wall
- See all 10 comparisons