Short answer: the Arendal 1723 Subwoofer 1V, if you are buying new. The Monoprice Monolith 16 THX Ultra ranks higher than it (#19 vs #118 of 143 subwoofers, 4.4/5 vs 3.9/5) but is discontinued, so only consider it used; the Arendal 1723 Subwoofer 1V is still sold new at $2,050.
The Monoprice Monolith 16 THX Ultra is the better-sounding choice. 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 Arendal 1723 Subwoofer 1V does well: A rear ported 13.8 inch subwoofer with good deep bass headroom for movies and balanced XLR input. Watch for: The 624.8H x 449.8W x 549.9D mm cabinet and 106 lbs (48.1 kg) mass make this a serious placement and moving commitment.
Buy the Arendal 1723 Subwoofer 1V if you want one new; the Monoprice Monolith 16 THX Ultra is discontinued, so only look for it 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 rear ported 13.8 inch subwoofer with good deep bass headroom for movies and balanced XLR input.
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 | Arendal 1723 Subwoofer 1V | |
|---|---|---|
| Price | $2,300 Discontinued | $2,050 |
| Ranked | #19 of 143 in Large Home Subwoofers (Over 75 lbs) | #118 of 143 in Large Home Subwoofers (Over 75 lbs) |
| Enclosure | ported, front | ported, rear |
| Output SPL at 15 Hz | 107.3 dB | 104.2 dB |
| Output SPL at 20 Hz | 118.4 dB | 106.9 dB |
| Output SPL at 25 Hz | 123.3 dB | 107.9 dB |
| Output SPL at 31.5 Hz | 125.1 dB | 110.8 dB |
| Output SPL at 40 Hz | 126.3 dB | 114.2 dB |
| Output SPL at 50 Hz | 126.5 dB | 116.7 dB |
| Output SPL at 63 Hz | 126.6 dB | 116.8 dB |
| Output SPL at 80 Hz | 126.8 dB | 118.5 dB |
| Output SPL at 100 Hz | 127.2 dB | 118.6 dB |
| Output SPL at 125 Hz | 127.6 dB | 116.7 dB |
| CEA-2010-A Average (40-80Hz) | 126.5 dB | 116.5 dB |
| Dimensions | 25.6”H x 22”W x 28.1”D (650.2 x 558.8 x 713.7 mm) | 24.6”H x 17.7”W x 21.6”D (624.8 x 449.8 x 549.9 mm) |
| Weight | 171.5 lbs (77.8 kg) | 106 lbs (48.1 kg) |
| Warranty | 5 | 10/5 |
| Cabinet Color | black | black, white |
| Country | United States | Norway |
| Measurement Source | Audioholics | Audioholics |
| Drivers | 16” (406mm) driver | 13.8” (351mm) driver |
| Inputs | XLR, RCA, XLR out | XLR (balanced), RCA |
| 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 | - | 98.3 dB |
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