Short answer: the Sony Bravia Theater Sub 9. It ranks #80 of 202 subwoofers by sound quality, rated 3.7/5, at $598. The Sony Bravia Theater Sub 7 ranks #61, rated 2.9/5, at $278, $320 cheaper, a saving that is not big enough to make up the sound-quality gap.
What the Sony Bravia Theater Sub 9 does well: Independent CEA-2010 testing records 98.0 dB at 20 Hz and 112.8 dB through 40-80 Hz. The catch: The 390.0H x 400.0W x 350.0D mm cabinet and 51.4 lbs (23.3 kg) mass still need deliberate placement.
What the Sony Bravia Theater Sub 7 does well: A slim wireless subwoofer for Sony’s BRAVIA Theater soundbars, only 134mm deep so it can stand upright or lie flat under a sofa. Watch for: No independent measurements yet, so its output can’t be compared directly with ranked subwoofers; the rating is estimated from the measured Sub 9 (112.8dB in the 40 to 80Hz CEA-2010 bands).
Buy the Sony Bravia Theater Sub 9. It is rated higher for sound quality, and the $320 saving on the Sony Bravia Theater Sub 7 is not enough to make up the difference.
About the ratings: the Sony Bravia Theater Sub 7’s rating is estimated from measured siblings and predecessors rather than its own measurements, with a likely range of 2.5 to 3.2, so this verdict could change once it is measured.
Looking for alternatives? See the complete Subwoofers rankings.
Specifications Side By Side
| Sony Bravia Theater Sub 9 | Sony Bravia Theater Sub 7 | |
|---|---|---|
| Price | $598.00 | $278.00 |
| Ranked | #80 of 202 in Medium Home Subwoofers (30-75 lbs) | #61 of 70 in Small Home Subwoofers (Under 30 lbs) Estimated |
| Enclosure | sealed | ported |
| Output SPL at 16 Hz | 85.1 dB | - |
| Output SPL at 20 Hz | 98.0 dB | - |
| Output SPL at 25 Hz | 103.2 dB | - |
| Output SPL at 31.5 Hz | 109.1 dB | - |
| Output SPL at 40 Hz | 109.9 dB | - |
| Output SPL at 50 Hz | 114.0 dB | - |
| Output SPL at 63 Hz | 114.7 dB | - |
| Output SPL at 80 Hz | 112.8 dB | - |
| CEA-2010-A Average (40-80Hz) | 112.8 dB | - |
| Dimensions | 15.4”H x 15.7”W x 13.8”D (390.0 x 400.0 x 350.0 mm) | 14.1”H x 13.9”W x 5.3”D (358 x 352 x 134 mm) |
| Weight | 51.4 lbs (23.3 kg) | 13.7 lbs (6.2 kg) |
| Warranty | 1 | - |
| Measurement Source | Brent Butterworth | - |
| Drivers | (2) 8” (200mm) drivers | 5.1” (130mm) driver |
| Country | Vietnam | - |
| Amplifier Power | - | 100W |
Related Speaker Comparisons
More top alternatives to Sony Bravia Theater Sub 9:
- Monoprice SW-15 vs Sony Bravia Theater Sub 9
- SVS SB-3000 vs Sony Bravia Theater Sub 9
- Sony Bravia Theater Sub 9 vs Sony Bravia Theater Sub 8
- Sony Bravia Theater Sub 8 vs Sony Bravia Theater Sub 7
- Monoprice SW-15 vs Aperion Audio Bravus II 12D
Prices on this page were last checked October 7, 2026 at 9:25 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
Sony Bravia Theater Sub 9: $598.00 Amazon eBay
Same family: the Sony Bravia Theater Sub 7 (smaller subwoofer, estimated 2.9/5) and the Sony Bravia Theater Sub 8 (smaller subwoofer, estimated 3.4/5).
Pros: Independent CEA-2010 testing records 98.0 dB at 20 Hz and 112.8 dB through 40-80 Hz. The sealed enclosure with (2) 8” drivers suits a mid-size room.
Cons: The 390.0H x 400.0W x 350.0D mm cabinet and 23.3 kg mass still need deliberate placement.
Full Sony Bravia Theater Sub 9 review and specifications →
| CEA-2010-A Average (40-80Hz) | 112.8 dB |
|---|---|
| Country | Vietnam |
| Dimensions | 15.4”H x 15.7”W x 13.8”D (390.0 x 400.0 x 350.0 mm) |
| Drivers | (2) 8” (200mm) drivers |
| Enclosure | sealed |
| Measurement Source | Brent Butterworth |
| Output SPL at 16 Hz | 85.1 dB |
| Output SPL at 20 Hz | 98.0 dB |
| Output SPL at 25 Hz | 103.2 dB |
| Output SPL at 31.5 Hz | 109.1 dB |
| Output SPL at 40 Hz | 109.9 dB |
| Output SPL at 50 Hz | 114.0 dB |
| Output SPL at 63 Hz | 114.7 dB |
| Output SPL at 80 Hz | 112.8 dB |
| Warranty | 1 |
| Weight | 51.4 lbs (23.3 kg) |
- 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
Sony Bravia Theater Sub 7: $278.00 Estimated Amazon eBay
Same family: the Sony Bravia Theater Sub 8 (larger subwoofer, ranked higher, estimated 3.4/5) and the Sony Bravia Theater Sub 9 (larger subwoofer, rated 3.7/5).
Pros: A slim wireless subwoofer for Sony’s BRAVIA Theater soundbars, only 134mm deep so it can stand upright or lie flat under a sofa. It uses a 130mm driver with a 100W S-Master amplifier, and two can be paired.
Cons: No independent measurements yet, so its output can’t be compared directly with ranked subwoofers; the rating is estimated from the measured Sub 9 (112.8dB in the 40 to 80Hz CEA-2010 bands). A 130mm driver is far smaller than a normal subwoofer’s, so deep bass and output are limited, and it only works with compatible Sony soundbars.
Full Sony Bravia Theater Sub 7 review and specifications →
| Amplifier Power | 100W |
|---|---|
| Dimensions | 14.1”H x 13.9”W x 5.3”D (358 x 352 x 134 mm) |
| Drivers | 5.1” (130mm) driver |
| Enclosure | ported |
| Weight | 13.7 lbs (6.2 kg) |
- Reviews, Comparisons and Sound Samples
- No independent measurement review is linked for this model; it is ranked from hands-on listening and comparison against similarly priced speakers.
- Head-to-Head Comparisons