Short answer: the MartinLogan Dynamo 1600X. It ranks #2 of 137 subwoofers at $1606.77; the Monoprice Monolith M-212 ranks #52 and costs $1620, so there is not much of a tradeoff to weigh.
On the MartinLogan Dynamo 1600X side: Sealed 15-inch with 900W RMS, 1800W peak delivers forceful clean tight low bass. Set against that: Ported design room integration needs, mid-range 121.5 dB output, and $1,607 price.
Buy the MartinLogan Dynamo 1600X if the ranking matters more than the price. Buy the Monoprice Monolith M-212 if the price matters more than the ranking.
Specifications Side By Side
| MartinLogan Dynamo 1600X | Monoprice Monolith M-212 | |
|---|---|---|
| Price | $1,606.77 | $1,620 |
| Ranked | #2 of 137 in Medium Powered Home Subwoofers (30-75 lbs) | #52 of 97 in Large Powered Home Subwoofers (Over 75 lbs) |
| Enclosure | sealed | ported, front |
| Output SPL at 15 Hz | 86.2 dB | 104.2 dB |
| Output SPL at 20 Hz | 99.4 dB | 110.3 dB |
| Output SPL at 25 Hz | 103.9 dB | 114.5 dB |
| Output SPL at 31.5 Hz | 111.7 dB | 116.9 dB |
| Output SPL at 40 Hz | 118.4 dB | 119.7 dB |
| Output SPL at 50 Hz | 121.0 dB | 119.8 dB |
| Output SPL at 63 Hz | 121.8 dB | 120.3 dB |
| Output SPL at 80 Hz | 121.0 dB | 121.7 dB |
| Output SPL at 100 Hz | 120.2 dB | 121.5 dB |
| Output SPL at 125 Hz | 119.0 dB | 122.3 dB |
| CEA-2010-A Average (40-80Hz) | 120.5 dB | 120.4 dB |
| Dimensions | 20.1"H x 17.9"W x 19.1"D (510.5 x 454.7 x 485.1 mm) | 36.4"H x 17.7"W x 23.6"D (924.6 x 449.6 x 599.4 mm) |
| Weight | 56 lbs / 25.4 kg | 174.2 lbs / 79.0 kg |
| Warranty | 3 | 5 |
| Cabinet Color | black | black |
| Country | United States | United States |
| Measurement Source | Audioholics | Manufacturer |
| Frequency Response | 20-200Hz, ±3dB | - |
| Power Output (Watts) | 900W RMS / 1800W peak | - |
| Input Connections | RCA (stereo and LFE), XLR (LFE), speaker-level (banana) | - |
| Drivers | 15" (381mm) driver | 2x 12" (305mm) drivers |
The Two Speakers In Full
MartinLogan Dynamo 1600X: $1,606.77
Pros: Sealed 15-inch with 900W RMS, 1800W peak delivers forceful clean tight low bass. Easily configurable as forward-firing or down-firing. Smartphone app with Anthem Room Correction (ARC) optimizes bass across room. Wireless capable with optional SWT-X module.
Cons: Ported design room integration needs, mid-range 121.5 dB output, and $1,607 price.
| CEA-2010-A Average (40-80Hz) | 120.5 dB |
|---|---|
| Cabinet Color | black |
| Country | United States |
| Dimensions | 20.1"H x 17.9"W x 19.1"D (510.5 x 454.7 x 485.1 mm) |
| Drivers | 15" (381mm) driver |
| Enclosure | sealed |
| Frequency Response | 20-200Hz, ±3dB |
| Input Connections | RCA (stereo and LFE), XLR (LFE), speaker-level (banana) |
| Measurement Source | Audioholics |
| Output SPL at 15 Hz | 86.2 dB |
| Output SPL at 20 Hz | 99.4 dB |
| Output SPL at 25 Hz | 103.9 dB |
| Output SPL at 31.5 Hz | 111.7 dB |
| Output SPL at 40 Hz | 118.4 dB |
| Output SPL at 50 Hz | 121.0 dB |
| Output SPL at 63 Hz | 121.8 dB |
| Output SPL at 80 Hz | 121.0 dB |
| Output SPL at 100 Hz | 120.2 dB |
| Output SPL at 125 Hz | 119.0 dB |
| Power Output (Watts) | 900W RMS / 1800W peak |
| Warranty | 3 |
| Weight | 56 lbs / 25.4 kg |
- Head-to-Head Comparisons
- MartinLogan Dynamo 1600X vs HSU Research ULS-15 MK2
- MartinLogan Dynamo 1600X vs JTR Speakers Captivator 212PRO
- MartinLogan Dynamo 1600X vs Power Sound Audio (PSA) XV15
- MartinLogan Dynamo 1600X vs Monoprice SW-15
- MartinLogan Dynamo 1600X vs SVS SB-3000
- MartinLogan Dynamo 1600X vs SVS PB-1000 PRO
- MartinLogan Dynamo 1600X vs Monoprice SW-12
- MartinLogan Dynamo 1600X vs Rythmik F12
- See all 15 comparisons
- Links
Monoprice Monolith M-212: $1,620
Notes: Product # 38544
| CEA-2010-A Average (40-80Hz) | 120.4 dB |
|---|---|
| Cabinet Color | black |
| Country | United States |
| Dimensions | 36.4"H x 17.7"W x 23.6"D (924.6 x 449.6 x 599.4 mm) |
| Drivers | 2x 12" (305mm) drivers |
| Enclosure | ported, front |
| Measurement Source | Manufacturer |
| Output SPL at 15 Hz | 104.2 dB |
| Output SPL at 20 Hz | 110.3 dB |
| Output SPL at 25 Hz | 114.5 dB |
| Output SPL at 31.5 Hz | 116.9 dB |
| Output SPL at 40 Hz | 119.7 dB |
| Output SPL at 50 Hz | 119.8 dB |
| Output SPL at 63 Hz | 120.3 dB |
| Output SPL at 80 Hz | 121.7 dB |
| Output SPL at 100 Hz | 121.5 dB |
| Output SPL at 125 Hz | 122.3 dB |
| Warranty | 5 |
| Weight | 174.2 lbs / 79.0 kg |
- Links
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Product prices and availability were last checked August 9, 2026 at 6:57 AM UTC 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.