Short answer: the Velodyne Acoustics DD-15+. Both are rated 4.1/5 for sound quality (#76 and #79 of 109 subwoofers), and the Velodyne Acoustics DD-15+ costs $4,800 against $5,000 for the Velodyne Acoustics DD-18+, so with nothing between them on sound quality, price settles it.
Why pick the Velodyne Acoustics DD-15+: Independent CEA-2010 testing records 107.7 dB at 20 Hz and 118.6 dB (avg of 3/4 bands) through 40-80 Hz. Watch for: The 508.0H x 459.7W x 571.5D mm cabinet and 54.4 kg mass make this a serious placement and moving commitment.
The case for the Velodyne Acoustics DD-18+: Independent CEA-2010 testing records 106.4 dB at 20 Hz and 118.3 dB through 40-80 Hz. The tradeoff: The 576.6H x 525.8W x 650.2D mm cabinet and 64.4 kg mass make this a serious placement and moving commitment.
One note: the Velodyne Acoustics DD-15+ is discontinued and no longer widely available new.
Buy the Velodyne Acoustics DD-15+. Both are rated the same for sound quality, and it costs $200 less than the Velodyne Acoustics DD-18+.
Still deciding? The full Subwoofers rankings cover every ranked option.
Specifications Side By Side
| Velodyne Acoustics DD-15+ | Velodyne Acoustics DD-18+ | |
|---|---|---|
| Price | $4,800 Discontinued | $5,000 Discontinued |
| Ranked | #76 of 109 in Large Home Subwoofers (Over 75 lbs) | #79 of 109 in Large Home Subwoofers (Over 75 lbs) |
| Enclosure | sealed | sealed |
| Output SPL at 20 Hz | 107.7 dB | 106.4 dB |
| Output SPL at 25 Hz | 112.7 dB | 111.3 dB |
| Output SPL at 31.5 Hz | 116.5 dB | 116.0 dB |
| Output SPL at 40 Hz | 118.6 dB | 118.8 dB |
| Output SPL at 50 Hz | 118.9 dB | 119.8 dB |
| Output SPL at 63 Hz | 118.2 dB | 118.3 dB |
| CEA-2010-A Average (40-80Hz) | 118.6 dB (avg of 3/4 bands) | 118.3 dB |
| Dimensions | 20”H x 18.1”W x 22.5”D (508.0 x 459.7 x 571.5 mm) | 22.7”H x 20.7”W x 25.6”D (576.6 x 525.8 x 650.2 mm) |
| Weight | 119.9 lbs (54.4 kg) | 142 lbs (64.4 kg) |
| Cabinet Color | black, wood | black, wood |
| Country | United States | United States |
| Measurement Source | Audioholics | Audioholics |
| Drivers | 15” (381mm) driver | 18” (457mm) driver |
| Inputs | XLR (stereo balanced), RCA (unbalanced), speaker-level | XLR (balanced, L/R), with pass-through and high-pass outputs |
| XLR Input | Yes | Yes |
| RCA Input | Yes | No |
| TRS Input | No | No |
| Optical Input | No | No |
| Coaxial Input | No | No |
| USB Input | No | No |
| HDMI Input | No | No |
| AES Input | No | No |
| Aux Input | No | No |
| Output SPL at 10 Hz | - | 87.6 dB |
| Output SPL at 12.5 Hz | - | 92.2 dB |
| Output SPL at 15 Hz | - | 101.8 dB |
| Output SPL at 80 Hz | - | 116.5 dB |
| Output SPL at 100 Hz | - | 115.1 dB |
| Output SPL at 125 Hz | - | 113.5 dB |
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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
Velodyne Acoustics DD-15+: $4,800 Discontinued eBay
Older model: the Velodyne Acoustics DD-15 (ranked lower, rated 3.6/5).
Pros: Independent CEA-2010 testing records 107.7 dB at 20 Hz and 118.6 dB (avg of 3/4 bands) through 40-80 Hz. The sealed enclosure with 15” (381mm) driver has the headroom for demanding film bass in a large room.
Cons: The 508.0H x 459.7W x 571.5D mm cabinet and 54.4 kg mass make this a serious placement and moving commitment. A sealed cabinet still needs careful placement and calibration to avoid room-mode peaks. Discontinued.
Notes: measured by soundandvision
Full Velodyne Acoustics DD-15+ review and specifications →
| AES Input | No |
|---|---|
| Aux Input | No |
| CEA-2010-A Average (40-80Hz) | 118.6 dB (avg of 3/4 bands) |
| Cabinet Color | black, wood |
| Coaxial Input | No |
| Country | United States |
| Dimensions | 20”H x 18.1”W x 22.5”D (508.0 x 459.7 x 571.5 mm) |
| Drivers | 15” (381mm) driver |
| Enclosure | sealed |
| HDMI Input | No |
| Inputs | XLR (stereo balanced), RCA (unbalanced), speaker-level |
| Measurement Source | Audioholics |
| Optical Input | No |
| Output SPL at 20 Hz | 107.7 dB |
| Output SPL at 25 Hz | 112.7 dB |
| Output SPL at 31.5 Hz | 116.5 dB |
| Output SPL at 40 Hz | 118.6 dB |
| Output SPL at 50 Hz | 118.9 dB |
| Output SPL at 63 Hz | 118.2 dB |
| RCA Input | Yes |
| TRS Input | No |
| USB Input | No |
| Weight | 119.9 lbs (54.4 kg) |
| XLR Input | Yes |
- Links
- Reviews, Comparisons and Sound Samples
- Independently measured by Audioholics; the published figures above come from this ASR subwoofer measurement thread.
Velodyne Acoustics DD-18+: $5,000 Discontinued eBay
Pros: Independent CEA-2010 testing records 106.4 dB at 20 Hz and 118.3 dB through 40-80 Hz. The sealed enclosure with 18” (457mm) driver has the headroom for demanding film bass in a large room.
Cons: The 576.6H x 525.8W x 650.2D mm cabinet and 64.4 kg mass make this a serious placement and moving commitment. A sealed cabinet still needs careful placement and calibration to avoid room-mode peaks. Discontinued.
Full Velodyne Acoustics DD-18+ review and specifications →
| AES Input | No |
|---|---|
| Aux Input | No |
| CEA-2010-A Average (40-80Hz) | 118.3 dB |
| Cabinet Color | black, wood |
| Coaxial Input | No |
| Country | United States |
| Dimensions | 22.7”H x 20.7”W x 25.6”D (576.6 x 525.8 x 650.2 mm) |
| Drivers | 18” (457mm) driver |
| Enclosure | sealed |
| HDMI Input | No |
| Inputs | XLR (balanced, L/R), with pass-through and high-pass outputs |
| Measurement Source | Audioholics |
| Optical Input | No |
| Output SPL at 10 Hz | 87.6 dB |
| Output SPL at 12.5 Hz | 92.2 dB |
| Output SPL at 15 Hz | 101.8 dB |
| Output SPL at 20 Hz | 106.4 dB |
| Output SPL at 25 Hz | 111.3 dB |
| Output SPL at 31.5 Hz | 116.0 dB |
| Output SPL at 40 Hz | 118.8 dB |
| Output SPL at 50 Hz | 119.8 dB |
| Output SPL at 63 Hz | 118.3 dB |
| Output SPL at 80 Hz | 116.5 dB |
| Output SPL at 100 Hz | 115.1 dB |
| Output SPL at 125 Hz | 113.5 dB |
| RCA Input | No |
| TRS Input | No |
| USB Input | No |
| Weight | 142 lbs (64.4 kg) |
| XLR Input | Yes |
- Links
- Reviews, Comparisons and Sound Samples
- Independently measured by Audioholics; the published figures above come from this ASR subwoofer measurement thread.
- Head-to-Head Comparisons