Short answer: both are discontinued, and they are rated the same for sound quality (#92 and #95 of 143 subwoofers). Either one is only an option used, so choose on condition and price. If you want one new, the JTR Speakers Orbit Shifter PRO ranks #1 at $4,499.
Why pick the Velodyne Acoustics DD-15+: A sealed 15 inch subwoofer with lots of headroom for film bass in a large room, now discontinued but worth buying used. Watch for: The 508.0H x 459.7W x 571.5D mm cabinet and 119.9 lbs (54.4 kg) mass make this a serious placement and moving commitment.
The case for the Velodyne Acoustics DD-18+: A sealed 18 inch subwoofer with powerful output for big rooms and balanced inputs, now discontinued but worth buying used. The tradeoff: The 576.6H x 525.8W x 650.2D mm cabinet and 142 lbs (64.4 kg) mass make this a serious placement and moving commitment.
Buy the Velodyne Acoustics DD-15+ or the Velodyne Acoustics DD-18+, whichever you find used in better condition; both are discontinued. For a new speaker, start with the JTR Speakers Orbit Shifter PRO instead.
Still deciding? The full Subwoofers rankings cover every ranked option.
Prices on this page were last checked November 14, 2026 at 6:17 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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Specifications Side By Side
| Velodyne Acoustics DD-15+ | Velodyne Acoustics DD-18+ | |
|---|---|---|
| Price | $4,800 Discontinued | $5,000 Discontinued |
| Ranked | #92 of 143 in Large Home Subwoofers (Over 75 lbs) | #95 of 143 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 |
Where the Ratings Come From
- Velodyne Acoustics DD-15+: manufacturer specifications and listening comparisons; no independent measurement has been published yet.
- Velodyne Acoustics DD-18+: manufacturer specifications and listening comparisons; no independent measurement has been published yet.
This comparison is generated from the ratings, specifications and measurements on each product’s own page, and it updates when that data changes. How we rank explains how each rating is decided.
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