Short answer: both are discontinued, and they are rated the same for sound quality (#37 and #38 of 212 subwoofers). Either one is only an option used, so choose on condition and price. If you want one new, the HSU Research ULS-15 MK2 ranks #4 at $999.
What the MartinLogan Dynamo 1100X does well: A compact sealed 12 inch subwoofer with punchy deep bass and built in room correction, now discontinued. The tradeoff: Output falls to 90.6dB at 15Hz and 95.9dB at 20Hz, which is limited for infrasonic effects in a large room.
The case for the MartinLogan Dynamo 1500X: A sealed 15 inch subwoofer with forceful, clean low bass that can fire forward or down, with room correction for several seats. Watch for: Output drops to 100.4dB at 20Hz and 92.9dB at 12.5Hz, which is typical of a sealed design and leaves less room for the deepest effects than a ported 15 inch.
Buy the MartinLogan Dynamo 1100X or the MartinLogan Dynamo 1500X, whichever you find used in better condition; both are discontinued. For a new speaker, start with the HSU Research ULS-15 MK2 instead.
Still deciding? The full Subwoofers rankings cover every ranked option.
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Specifications Side By Side
| MartinLogan Dynamo 1100X | MartinLogan Dynamo 1500X | |
|---|---|---|
| Price | $1,274.99 Discontinued | $1,299 Discontinued |
| Ranked | #37 of 212 in Medium Home Subwoofers (30-75 lbs) | #38 of 212 in Medium Home Subwoofers (30-75 lbs) |
| Enclosure | sealed | sealed |
| Output SPL at 15 Hz | 90.6 dB | 95.6 dB |
| Output SPL at 20 Hz | 95.9 dB | 100.4 dB |
| Output SPL at 25 Hz | 100.2 dB | 104.4 dB |
| Output SPL at 31.5 Hz | 106.5 dB | 108.3 dB |
| Output SPL at 40 Hz | 111.4 dB | 113.0 dB |
| Output SPL at 50 Hz | 115.1 dB | 117.1 dB |
| Output SPL at 63 Hz | 118.7 dB | 118.3 dB |
| Output SPL at 80 Hz | 120.7 dB | 117.4 dB |
| Output SPL at 100 Hz | 121.3 dB | 116.2 dB |
| Output SPL at 125 Hz | 120.7 dB | 115.1 dB |
| CEA-2010-A Average (40-80Hz) | 116.5 dB | 116.5 dB |
| Dimensions | 17.1”H x 15”W x 15.6”D (434.3 x 381.0 x 396.2 mm) | 18.3”H x 16.7”W x 17.6”D (464.8 x 425.4 x 447.0 mm) |
| Weight | 46.1 lbs (20.9 kg) | 52 lbs (23.6 kg) |
| Warranty | 3 | 3 |
| Cabinet Color | black | - |
| Country | United States | United States |
| Measurement Source | Matthew J Poes | Audioholics |
| Frequency Response | 22-200Hz, ±3dB | 20Hz+ (with room correction) |
| Amplifier Power | 650W RMS / 1300W peak | 650W RMS / 1300W peak |
| Drivers | 12” (305mm) driver | 15” (381mm) driver |
| Inputs | XLR (LFE), RCA (LFE), RCA (stereo), speaker-level | XLR (LFE), RCA (LFE), RCA (stereo), speaker-level |
| XLR Input | Yes | Yes |
| RCA Input | Yes | Yes |
| 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 12.5 Hz | - | 92.9 dB |
Where the Ratings Come From
- MartinLogan Dynamo 1100X: manufacturer specifications and listening comparisons; no independent measurement has been published yet.
- MartinLogan Dynamo 1500X: 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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