Short answer: the JL Audio Dominion d108 on measured sound quality, the Jamo SUB 800 on price. The JL Audio Dominion d108 ranks #28 of 42 subwoofers at $1100. The Jamo SUB 800 ranks #29 at $499, $601 cheaper.
What the Jamo SUB 800 offers: A tiny 4.6kg, 20cm-cube subwoofer that can add useful bass in a compact 2.1 or satellite system without dominating the room. Its passive-radiator design produces respectable measured output for its size: 103.2dB at 50Hz and 108.4dB at 63Hz. Reviewers found it capable of surprisingly low extension when carefully adjusted. Watch for: Its small driver and cabinet run out of steam in the deepest bass: measured output falls to 84.1dB at 31.5Hz and 95.1dB at 40Hz. Reviews also find its balance difficult to dial in, where restraining the low-end thud can leave a mid-bass hole. It suits a small room and modest satellites, not high-impact cinema bass.
What the JL Audio Dominion d108 offers: Independent CEA-2010 testing records 79.7 dB at 20 Hz and 103.0 dB through 40-80 Hz. The sealed enclosure with 8” (203mm) driver is best suited to upper-bass support in a modest room. Watch for: Deep-bass output is limited relative to its midbass result, so it is not the right choice for the lowest movie effects. The 288.8H x 254.0W x 336.0D mm cabinet and 12.0 kg mass still need deliberate placement and calibration.
Buy the Jamo SUB 800 when the price outweighs sound quality for you, and the JL Audio Dominion d108 when sound quality outweighs the price instead.
Specifications Side By Side
| Jamo SUB 800 | JL Audio Dominion d108 | |
|---|---|---|
| Price | $499 | $1,100 |
| Ranked | #29 of 42 in Small Powered Home Subwoofers (Under 30 lbs) | #28 of 42 in Small Powered Home Subwoofers (Under 30 lbs) |
| Enclosure | passive radiator | sealed |
| Output SPL at 31.5 Hz | 84.1 dB | 91.5 dB |
| Output SPL at 40 Hz | 95.1 dB | 98.4 dB |
| Output SPL at 50 Hz | 103.2 dB | 102.9 dB |
| Output SPL at 63 Hz | 108.4 dB | 105.6 dB |
| CEA-2010-A Average (40-80Hz) | 102.2 dB (avg of 3/4 bands) | 103.0 dB |
| Dimensions | 8"H x 8"W x 8"D (203.2 x 203.2 x 203.2 mm) | 11.4"H x 10"W x 13.2"D (288.8 x 254.0 x 336.0 mm) |
| Weight | 10.1 lbs / 4.6 kg | 26.5 lbs / 12.0 kg |
| Country | Denmark | United States |
| Measurement Source | Brent Butterworth | ErinsAudioCorner |
| Drivers | 6.5" (165mm) driver | 8" (203mm) driver |
| Output SPL at 20 Hz | - | 79.7 dB |
| Output SPL at 25 Hz | - | 85.8 dB |
| Output SPL at 80 Hz | - | 105.0 dB |
| Output SPL at 100 Hz | - | 103.9 dB |
| Warranty | - | 3 |
| Cabinet Color | - | black |
Related Speaker Comparisons
A few more comparisons worth a look in the same class:
- Focal Sub Air vs Yamaha YST-SW215
- Wharfedale DX-1 vs Gallo Acoustics TR-1
- Gallo Acoustics TR-1 vs Monoprice SW-15
- JL Audio Dominion d108 vs Rythmik F12
- ELAC IW-S10EQ in-wall vs SVS 3000 Micro
Prices on this page were last checked September 8, 2026 at 6:02 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
Jamo SUB 800: $499 eBay
Pros: A tiny 4.6kg, 20cm-cube subwoofer that can add useful bass in a compact 2.1 or satellite system without dominating the room. Its passive-radiator design produces respectable measured output for its size: 103.2dB at 50Hz and 108.4dB at 63Hz. Reviewers found it capable of surprisingly low extension when carefully adjusted.
Cons: Its small driver and cabinet run out of steam in the deepest bass: measured output falls to 84.1dB at 31.5Hz and 95.1dB at 40Hz. Reviews also find its balance difficult to dial in, where restraining the low-end thud can leave a mid-bass hole. It suits a small room and modest satellites, not high-impact cinema bass.
Full Jamo SUB 800 review and specifications →
| CEA-2010-A Average (40-80Hz) | 102.2 dB (avg of 3/4 bands) |
|---|---|
| Country | Denmark |
| Dimensions | 8"H x 8"W x 8"D (203.2 x 203.2 x 203.2 mm) |
| Drivers | 6.5" (165mm) driver |
| Enclosure | passive radiator |
| Measurement Source | Brent Butterworth |
| Output SPL at 31.5 Hz | 84.1 dB |
| Output SPL at 40 Hz | 95.1 dB |
| Output SPL at 50 Hz | 103.2 dB |
| Output SPL at 63 Hz | 108.4 dB |
| Weight | 10.1 lbs / 4.6 kg |
- Links
- Reviews, Comparisons and Sound Samples
JL Audio Dominion d108: $1,100 eBay
Pros: Independent CEA-2010 testing records 79.7 dB at 20 Hz and 103.0 dB through 40-80 Hz. The sealed enclosure with 8” (203mm) driver is best suited to upper-bass support in a modest room.
Cons: Deep-bass output is limited relative to its midbass result, so it is not the right choice for the lowest movie effects. The 288.8H x 254.0W x 336.0D mm cabinet and 12.0 kg mass still need deliberate placement and calibration.
Notes: Ash colour.
Full JL Audio Dominion d108 review and specifications →
| CEA-2010-A Average (40-80Hz) | 103.0 dB |
|---|---|
| Cabinet Color | black |
| Country | United States |
| Dimensions | 11.4"H x 10"W x 13.2"D (288.8 x 254.0 x 336.0 mm) |
| Drivers | 8" (203mm) driver |
| Enclosure | sealed |
| Measurement Source | ErinsAudioCorner |
| Output SPL at 20 Hz | 79.7 dB |
| Output SPL at 25 Hz | 85.8 dB |
| Output SPL at 31.5 Hz | 91.5 dB |
| Output SPL at 40 Hz | 98.4 dB |
| Output SPL at 50 Hz | 102.9 dB |
| Output SPL at 63 Hz | 105.6 dB |
| Output SPL at 80 Hz | 105.0 dB |
| Output SPL at 100 Hz | 103.9 dB |
| Warranty | 3 |
| Weight | 26.5 lbs / 12.0 kg |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons