Short answer: the Danley Sound Labs DTS10. It ranks #14 of 143 subwoofers by sound quality (rated 4.5/5) at $4,400 and is still sold new; the Monoprice Monolith 16 THX Ultra ranks #19 (rated 4.4/5) and is discontinued, so it is only an option used.
The case for the Monoprice Monolith 16 THX Ultra: A THX Ultra certified 16 inch ported subwoofer with huge output for far less money than most rivals, now worth finding used. The tradeoff: Heavy at 172 lbs (78 kg) and ported design can interact with room acoustics.
What the Danley Sound Labs DTS10 does well: A passive tapped horn subwoofer with dual 12 inch drivers and huge output, still in production unlike many of its peers. The catch: Requires external amplifier, extremely heavy at 284.4 lbs (129 kg), very large cabinet, and specialized tapped-horn design.
Buy the Danley Sound Labs DTS10. It is rated higher for sound quality, and the Monoprice Monolith 16 THX Ultra is discontinued, so it is only available used.
Looking for alternatives? See the complete Subwoofers rankings.
A THX Ultra certified 16 inch ported subwoofer with huge output for far less money than most rivals, now worth finding used.
A passive tapped horn subwoofer with dual 12 inch drivers and huge output, still in production unlike many of its peers.
Prices on this page were last checked October 29, 2026 at 4:42 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
| Monoprice Monolith 16 THX Ultra | Danley Sound Labs DTS10 | |
|---|---|---|
| Price | $2,300 Discontinued | $4,400 Passive |
| Ranked | #19 of 143 in Large Home Subwoofers (Over 75 lbs) | #14 of 143 in Large Home Subwoofers (Over 75 lbs) |
| Enclosure | ported, front | tapped horn |
| Output SPL at 15 Hz | 107.3 dB | 119.0 dB |
| Output SPL at 20 Hz | 118.4 dB | 122.5 dB |
| Output SPL at 25 Hz | 123.3 dB | 125.5 dB |
| Output SPL at 31.5 Hz | 125.1 dB | 128.3 dB |
| Output SPL at 40 Hz | 126.3 dB | 125.3 dB |
| Output SPL at 50 Hz | 126.5 dB | 127.3 dB |
| Output SPL at 63 Hz | 126.6 dB | 130.9 dB |
| Output SPL at 80 Hz | 126.8 dB | 135.0 dB |
| Output SPL at 100 Hz | 127.2 dB | 133.0 dB |
| Output SPL at 125 Hz | 127.6 dB | 128.7 dB |
| CEA-2010-A Average (40-80Hz) | 126.5 dB | 129.6 dB |
| Dimensions | 25.6”H x 22”W x 28.1”D (650.2 x 558.8 x 713.7 mm) | 44”H x 59.5”W x 16”D (1117.6 x 1511.3 x 406.4 mm) |
| Weight | 171.5 lbs (77.8 kg) | 285.1 lbs (129.3 kg) |
| Warranty | 5 | 5 |
| Cabinet Color | black | black |
| Country | United States | United States |
| Measurement Source | Audioholics | Data-bass |
| Drivers | 16” (406mm) driver | 2x 12” (305mm) driver |
| Inputs | XLR, RCA, XLR out | - |
| XLR Input | Yes | - |
| RCA Input | Yes | - |
| TRS Input | No | - |
| Optical Input | No | - |
| Coaxial Input | No | - |
| USB Input | No | - |
| HDMI Input | No | - |
| AES Input | No | - |
| Aux Input | No | - |
| Passive | - | Yes |
| Output SPL at 10 Hz | - | 94.2 dB |
| Output SPL at 12.5 Hz | - | 110.6 dB |
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