Short answer: pick the SVS SB-3000 if you want sound quality that has been measured and ranked; the REL Acoustics T/7x is unmeasured so far, so its case rests on features and price.
What the REL Acoustics T/7x offers: Sealed subwoofer with a front-firing 8-inch driver and a down-firing 10-inch passive radiator, driven by a 200W Class A/B amplifier.
What the SVS SB-3000 brings: 13-inch sealed design with 800W RMS (2500W peak) that Audioholics measured at a 118.7dB CEA-2010-A average from 40-80Hz, and rated by SVS at 18-270Hz within ±3dB.
On paper: The REL Acoustics T/7x is rated down to 30Hz against 270Hz, though makers quote these at different tolerances. The SVS SB-3000 has more amplifier power, 800W against 200W.
Price: the REL Acoustics T/7x lists at $1,299 and the SVS SB-3000 at $1,199.
Buy the SVS SB-3000 if you want a speaker whose sound quality has been measured and ranked. It also has more power.
Buy the REL Acoustics T/7x if you want deeper rated bass, and you can wait for measurements to confirm how it sounds.
Want more options? Browse the full Subwoofers rankings.
Specifications Side By Side
| REL Acoustics T/7x | SVS SB-3000 | |
|---|---|---|
| Price | $1,299.00 | $1,199.00 |
| Ranked | - | #14 of 145 in Medium Home Subwoofers (30-75 lbs) |
| Enclosure | sealed, passive radiator | sealed |
| Drivers | 8” driver + 10” passive radiator | 13” (330mm) driver |
| Amplifier Power | 200W (Class A/B) | 800W RMS / 2500W peak |
| Frequency Response | 30Hz (-6dB) (Manufacturer specified) | 18-270Hz, ±3dB |
| Country | United Kingdom | United States |
| Output SPL at 15 Hz | - | 90.3 dB |
| Output SPL at 20 Hz | - | 96.6 dB |
| Output SPL at 25 Hz | - | 101.7 dB |
| Output SPL at 31.5 Hz | - | 107.8 dB |
| Output SPL at 40 Hz | - | 114.6 dB |
| Output SPL at 50 Hz | - | 118.7 dB |
| Output SPL at 63 Hz | - | 120.7 dB |
| Output SPL at 80 Hz | - | 120.9 dB |
| Output SPL at 100 Hz | - | 120.8 dB |
| Output SPL at 125 Hz | - | 120.7 dB |
| CEA-2010-A Average (40-80Hz) | - | 118.7 dB |
| Dimensions | - | 15.6”H x 15.2”W x 15.7”D (396.2 x 386.1 x 398.8 mm) |
| Weight | - | 54.5 lbs (24.7 kg) |
| Warranty | - | 5 |
| Cabinet Color | - | black |
| Measurement Source | - | Audioholics |
| Crossover Frequency | - | 30-200Hz adjustable, 6/12/18/24dB slopes |
| Inputs | - | RCA (unbalanced), USB |
| Phase Control | - | 0°-180° |
| Features | - | Auto/On, 3-12V AC/DC trigger |
Prices on this page were last checked September 29, 2026 at 3:43 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.
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The Two Speakers In Full
REL Acoustics T/7x: $1,299.00 Amazon eBay
Older model: the REL Acoustics T-7 (rated 3.6/5).
Pros: Sealed subwoofer with a front-firing 8-inch driver and a down-firing 10-inch passive radiator, driven by a 200W Class A/B amplifier. REL rates extension to 30Hz at -6dB. A high-level speaker-wire input and an RCA/LFE input can be connected at the same time for music and movies.
Cons: No independent measurements yet, so its output can’t be compared with ranked subwoofers. There is no app, EQ or room correction, and an 8-inch driver limits output in a large room.
Full REL Acoustics T/7x review and specifications →
| Amplifier Power | 200W (Class A/B) |
|---|---|
| Country | United Kingdom |
| Drivers | 8” driver + 10” passive radiator |
| Enclosure | sealed, passive radiator |
| Frequency Response | 30Hz (-6dB) (Manufacturer specified) |
- Links
- Reviews, Comparisons and Sound Samples
- These figures are manufacturer-specified rather than independently measured.
- Head-to-Head Comparisons
SVS SB-3000: $1,199.00 Amazon eBay
Pros: 13-inch sealed design with 800W RMS (2500W peak) that Audioholics measured at a 118.7dB CEA-2010-A average from 40-80Hz, and rated by SVS at 18-270Hz within ±3dB. Beautifully made with pinpoint control and flawless tonal accuracy. Sweet spot performance-to-value ratio. Three-band parametric EQ with 1Hz precision adjustment.
Cons: Being sealed, it gives up deep-bass output: Audioholics measured 96.6dB at 20Hz and 101.7dB at 25Hz, about 15dB behind the ported SVS PB-3000 from the same series, so a large room or reference-level movie bass may call for a second sub.
Full SVS SB-3000 review and specifications →
| Amplifier Power | 800W RMS / 2500W peak |
|---|---|
| CEA-2010-A Average (40-80Hz) | 118.7 dB |
| Cabinet Color | black |
| Country | United States |
| Crossover Frequency | 30-200Hz adjustable, 6/12/18/24dB slopes |
| Dimensions | 15.6”H x 15.2”W x 15.7”D (396.2 x 386.1 x 398.8 mm) |
| Drivers | 13” (330mm) driver |
| Enclosure | sealed |
| Features | Auto/On, 3-12V AC/DC trigger |
| Frequency Response | 18-270Hz, ±3dB |
| Inputs | RCA (unbalanced), USB |
| Measurement Source | Audioholics |
| Output SPL at 15 Hz | 90.3 dB |
| Output SPL at 20 Hz | 96.6 dB |
| Output SPL at 25 Hz | 101.7 dB |
| Output SPL at 31.5 Hz | 107.8 dB |
| Output SPL at 40 Hz | 114.6 dB |
| Output SPL at 50 Hz | 118.7 dB |
| Output SPL at 63 Hz | 120.7 dB |
| Output SPL at 80 Hz | 120.9 dB |
| Output SPL at 100 Hz | 120.8 dB |
| Output SPL at 125 Hz | 120.7 dB |
| Phase Control | 0°-180° |
| Warranty | 5 |
| Weight | 54.5 lbs (24.7 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
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