Short answer: the Definitive Technology SuperCube 2000 for the higher ranking, the Klipsch HD Theater 600 for the lower price. The Definitive Technology SuperCube 2000 ranks #8 of 42 subwoofers at $599. The Klipsch HD Theater 600 ranks #9 at $399, $200 cheaper.
One note: the Definitive Technology SuperCube 2000 is discontinued, but it still ranks #8 of 42 subwoofers, ahead of most of what is still sold new, so it is worth considering used.
Buy the Definitive Technology SuperCube 2000 if the ranking matters more than the price. Buy the Klipsch HD Theater 600 if the price matters more than the ranking.
Specifications Side By Side
| Definitive Technology SuperCube 2000 | Klipsch HD Theater 600 | |
|---|---|---|
| Price | $599 Discontinued | $399 |
| Ranked | #8 of 42 in Small Powered Home Subwoofers (Under 30 lbs) | #9 of 42 in Small Powered Home Subwoofers (Under 30 lbs) |
| Enclosure | passive radiator | ported, rear |
| Output SPL at 20 Hz | 74.1 dB | - |
| Output SPL at 25 Hz | 88.7 dB | 87.1 dB |
| Output SPL at 31.5 Hz | 97.6 dB | 98.4 dB |
| Output SPL at 40 Hz | 103.4 dB | 104.9 dB |
| Output SPL at 50 Hz | 109.0 dB | 107.6 dB |
| Output SPL at 63 Hz | 110.3 dB | 112.1 dB |
| Output SPL at 80 Hz | 110.3 dB | - |
| CEA-2010-A Average (40-80Hz) | 108.2 dB | 108.2 dB (avg of 3/4 bands) |
| Dimensions | 10.75"H x 10.25"W x 10.88"D (273.1 x 260.3 x 276.4 mm) | 13.9"H x 12.5"W x 12.5"D (353.1 x 317.5 x 317.5 mm) |
| Warranty | 5/3 | - |
| Cabinet Color | black | - |
| Country | United States | United States |
| Measurement Source | Brent Butterworth | Brent Butterworth |
| Discontinued | Yes | - |
| Weight | 24.9 lbs / 11.3 kg | 17 lbs / 7.7 kg |
| Drivers | 7.5" (190mm) driver | 8" (203mm) driver |
The Two Speakers In Full
Definitive Technology SuperCube 2000: $599 Discontinued
Cons: Discontinued.
| CEA-2010-A Average (40-80Hz) | 108.2 dB |
|---|---|
| Cabinet Color | black |
| Country | United States |
| Dimensions | 10.75"H x 10.25"W x 10.88"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 | 74.1 dB |
| Output SPL at 25 Hz | 88.7 dB |
| Output SPL at 31.5 Hz | 97.6 dB |
| Output SPL at 40 Hz | 103.4 dB |
| Output SPL at 50 Hz | 109.0 dB |
| Output SPL at 63 Hz | 110.3 dB |
| Output SPL at 80 Hz | 110.3 dB |
| Warranty | 5/3 |
| Weight | 24.9 lbs / 11.3 kg |
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Klipsch HD Theater 600: $399
| CEA-2010-A Average (40-80Hz) | 108.2 dB (avg of 3/4 bands) |
|---|---|
| Country | United States |
| Dimensions | 13.9"H x 12.5"W x 12.5"D (353.1 x 317.5 x 317.5 mm) |
| Drivers | 8" (203mm) driver |
| Enclosure | ported, rear |
| Measurement Source | Brent Butterworth |
| Output SPL at 25 Hz | 87.1 dB |
| Output SPL at 31.5 Hz | 98.4 dB |
| Output SPL at 40 Hz | 104.9 dB |
| Output SPL at 50 Hz | 107.6 dB |
| Output SPL at 63 Hz | 112.1 dB |
| Weight | 17 lbs / 7.7 kg |
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Product prices and availability were last checked August 9, 2026 at 6:57 AM UTC 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.