Short answer: both are discontinued, so this only matters if you are buying used. Used, the Definitive Technology SuperCube 2000 is the better pick: it ranks #5 of 73 subwoofers by sound quality (rated 3.7/5), against #35 (rated 3.3/5) for the Klipsch HD Theater 600. If you want one new, the Edifier T5s ranks #2 at $199.99.
Buy the Definitive Technology SuperCube 2000 only if you find one used in good condition; both are discontinued, and it is the better rated of the two. For a new speaker, start with the Edifier T5s instead.
Want more options? Browse the full Subwoofers rankings.
A discontinued very compact subwoofer with a 7.5 inch driver and passive radiator that adds upper bass punch to a small system.
A discontinued compact ported 8 inch subwoofer that adds midbass support to a small home theater system.
Prices on this page were last checked November 7, 2026 at 7:34 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.
Specifications Side By Side
| Definitive Technology SuperCube 2000 | Klipsch HD Theater 600 | |
|---|---|---|
| Price | $599 Discontinued | $399 Discontinued |
| Ranked | #5 of 73 in Small Home Subwoofers (Under 30 lbs) | #35 of 73 in Small Home Subwoofers (Under 30 lbs) |
| Enclosure | passive radiator | ported, rear |
| Output SPL at 20 Hz | 80.1 dB | - |
| Output SPL at 25 Hz | 94.7 dB | 87.1 dB |
| Output SPL at 31.5 Hz | 103.6 dB | 98.4 dB |
| Output SPL at 40 Hz | 109.4 dB | 104.9 dB |
| Output SPL at 50 Hz | 115.0 dB | 107.6 dB |
| Output SPL at 63 Hz | 116.3 dB | 112.1 dB |
| Output SPL at 80 Hz | 116.3 dB | - |
| CEA-2010-A Average (40-80Hz) | 114.2 dB | 108.2 dB (avg of 3/4 bands) |
| Dimensions | 10.8”H x 10.2”W x 10.9”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 |
| Weight | 24.9 lbs (11.3 kg) | 17 lbs (7.7 kg) |
| Drivers | 7.5” (190mm) driver | 8” (203mm) driver |
Related Speaker Comparisons
More top alternatives to Definitive Technology SuperCube 2000: