Short answer: the Arendal 1723 Subwoofer 2V, if you are buying new. The Monoprice Monolith 13 THX Ultra measures as well as it (#63 vs #64 of 143 subwoofers, 4.2/5 vs 4.2/5) but is discontinued, so only consider it used; the Arendal 1723 Subwoofer 2V is still sold new at $3,100.
Why pick the Arendal 1723 Subwoofer 2V: Independent CEA-2010 testing records 108.9 dB at 20 Hz and 121.0 dB through 40-80 Hz. Watch for: The 699.8H x 499.9W x 608.8D mm cabinet and 132.5 lbs (60.1 kg) mass make this a serious placement and moving commitment.
Why pick the Monoprice Monolith 13 THX Ultra: Independent CEA-2010 testing records 115.0 dB at 20 Hz and 121.1 dB through 40-80 Hz. The tradeoff: The 604.5H x 515.6W x 739.1D mm cabinet and 153.2 lbs (69.5 kg) mass make this a serious placement and moving commitment.
Buy the Arendal 1723 Subwoofer 2V, since the Monoprice Monolith 13 THX Ultra is discontinued and only worth hunting down used.
Want more options? Browse the full Subwoofers rankings.
Specifications Side By Side
| Arendal 1723 Subwoofer 2V | Monoprice Monolith 13 THX Ultra | |
|---|---|---|
| Price | $3,100 | $1,700 Discontinued |
| Ranked | #64 of 143 in Large Home Subwoofers (Over 75 lbs) | #63 of 143 in Large Home Subwoofers (Over 75 lbs) |
| Enclosure | ported, rear | ported, front |
| Output SPL at 10 Hz | 90.8 dB | - |
| Output SPL at 12.5 Hz | 104.9 dB | 94.0 dB |
| Output SPL at 15 Hz | 108.0 dB | 109.1 dB |
| Output SPL at 20 Hz | 108.9 dB | 115.0 dB |
| Output SPL at 25 Hz | 112.1 dB | 118.0 dB |
| Output SPL at 31.5 Hz | 115.2 dB | 119.5 dB |
| Output SPL at 40 Hz | 119.1 dB | 120.3 dB |
| Output SPL at 50 Hz | 121.6 dB | 120.7 dB |
| Output SPL at 63 Hz | 122.0 dB | 121.4 dB |
| Output SPL at 80 Hz | 121.5 dB | 122.1 dB |
| Output SPL at 100 Hz | 120.1 dB | 122.7 dB |
| Output SPL at 125 Hz | 119.6 dB | 123.8 dB |
| CEA-2010-A Average (40-80Hz) | 121.0 dB | 121.1 dB |
| Dimensions | 27.6”H x 19.7”W x 24”D (699.8 x 499.9 x 608.8 mm) | 23.8”H x 20.3”W x 29.1”D (604.5 x 515.6 x 739.1 mm) |
| Weight | 132.5 lbs (60.1 kg) | 153.2 lbs (69.5 kg) |
| Warranty | 10/5 | 5 |
| Cabinet Color | black, white | black |
| Country | Norway | United States |
| Measurement Source | Audioholics | Audioholics |
| Drivers | 2x 13.8” (351mm) driver | 13” (330mm) driver |
| Inputs | XLR (balanced), RCA | XLR (stereo balanced), RCA (stereo/mono) |
| 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 |
Related Speaker Comparisons
More worthwhile head-to-heads for Monoprice Monolith 13 THX Ultra:
- JTR Speakers Captivator S2 vs Monoprice Monolith 13 THX Ultra
- Monoprice Monolith 16 THX Ultra vs Monoprice Monolith 13 THX Ultra
- Rythmik FV15HP vs Monoprice Monolith 13 THX Ultra
- HSU Research VTF-15H MK2 vs Monoprice Monolith 13 THX Ultra
- HSU Research VTF-3 MK5 HP vs Monoprice Monolith 13 THX Ultra
Prices on this page were last checked October 14, 2026 at 2:38 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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The Two Speakers In Full
Arendal 1723 Subwoofer 2V: $3,100 Arendal Sound $3,100 eBay
Same family: the Arendal 1723 Subwoofer 1S (smaller subwoofer, rated 3.9/5), the Arendal 1723 Subwoofer 1V (smaller subwoofer, ranked lower, rated 3.9/5) and the Arendal 1723 Subwoofer 2S (smaller subwoofer, ranked lower, rated 4.1/5).
Pros: Independent CEA-2010 testing records 108.9 dB at 20 Hz and 121.0 dB through 40-80 Hz. The ported, rear enclosure with 2x 13.8” (351mm) driver has the headroom for demanding film bass in a large room.
Cons: The 699.8H x 499.9W x 608.8D mm cabinet and 60.1 kg mass make this a serious placement and moving commitment. Ported output does not solve room modes, so careful placement and calibration remain essential.
Full Arendal 1723 Subwoofer 2V review and specifications →
| Released | Sep 2020 (6 years ago) |
|---|---|
| AES Input | No |
| Aux Input | No |
| CEA-2010-A Average (40-80Hz) | 121.0 dB |
| Cabinet Color | black, white |
| Coaxial Input | No |
| Country | Norway |
| Dimensions | 27.6”H x 19.7”W x 24”D (699.8 x 499.9 x 608.8 mm) |
| Drivers | 2x 13.8” (351mm) driver |
| Enclosure | ported, rear |
| HDMI Input | No |
| Inputs | XLR (balanced), RCA |
| Measurement Source | Audioholics |
| Optical Input | No |
| Output SPL at 10 Hz | 90.8 dB |
| Output SPL at 12.5 Hz | 104.9 dB |
| Output SPL at 15 Hz | 108.0 dB |
| Output SPL at 20 Hz | 108.9 dB |
| Output SPL at 25 Hz | 112.1 dB |
| Output SPL at 31.5 Hz | 115.2 dB |
| Output SPL at 40 Hz | 119.1 dB |
| Output SPL at 50 Hz | 121.6 dB |
| Output SPL at 63 Hz | 122.0 dB |
| Output SPL at 80 Hz | 121.5 dB |
| Output SPL at 100 Hz | 120.1 dB |
| Output SPL at 125 Hz | 119.6 dB |
| RCA Input | Yes |
| TRS Input | No |
| USB Input | No |
| Warranty | 10/5 |
| Weight | 132.5 lbs (60.1 kg) |
| XLR Input | Yes |
- Links
- Reviews, Comparisons and Sound Samples
- Independently measured by Audioholics; the published figures above come from this ASR subwoofer measurement thread.
- Head-to-Head Comparisons
Monoprice Monolith 13 THX Ultra: $1,700 Discontinued eBay
Same family: the Monoprice Monolith 12 THX Ultra (smaller subwoofer, ranked lower, rated 3.8/5), the Monoprice Monolith 15 THX Ultra (larger subwoofer, ranked lower, rated 4.2/5) and the Monoprice Monolith 16 THX Ultra (larger subwoofer, ranked higher, rated 4.4/5). See every Monoprice Monolith generation.
Pros: Independent CEA-2010 testing records 115.0 dB at 20 Hz and 121.1 dB through 40-80 Hz. The ported, front enclosure with 13” (330mm) driver has the headroom for demanding film bass in a large room.
Cons: The 604.5H x 515.6W x 739.1D mm cabinet and 69.5 kg mass make this a serious placement and moving commitment. Ported output does not solve room modes, so careful placement and calibration remain essential. Discontinued.
Notes: Product # 41496
Full Monoprice Monolith 13 THX Ultra review and specifications →
| Released | Aug 2021 (5 years ago) |
|---|---|
| AES Input | No |
| Aux Input | No |
| CEA-2010-A Average (40-80Hz) | 121.1 dB |
| Cabinet Color | black |
| Coaxial Input | No |
| Country | United States |
| Dimensions | 23.8”H x 20.3”W x 29.1”D (604.5 x 515.6 x 739.1 mm) |
| Drivers | 13” (330mm) driver |
| Enclosure | ported, front |
| HDMI Input | No |
| Inputs | XLR (stereo balanced), RCA (stereo/mono) |
| Measurement Source | Audioholics |
| Optical Input | No |
| Output SPL at 12.5 Hz | 94.0 dB |
| Output SPL at 15 Hz | 109.1 dB |
| Output SPL at 20 Hz | 115.0 dB |
| Output SPL at 25 Hz | 118.0 dB |
| Output SPL at 31.5 Hz | 119.5 dB |
| Output SPL at 40 Hz | 120.3 dB |
| Output SPL at 50 Hz | 120.7 dB |
| Output SPL at 63 Hz | 121.4 dB |
| Output SPL at 80 Hz | 122.1 dB |
| Output SPL at 100 Hz | 122.7 dB |
| Output SPL at 125 Hz | 123.8 dB |
| RCA Input | Yes |
| TRS Input | No |
| USB Input | No |
| Warranty | 5 |
| Weight | 153.2 lbs (69.5 kg) |
| XLR Input | Yes |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Monoprice Monolith 13 THX Ultra vs SVS PB16-Ultra
- Monoprice Monolith 13 THX Ultra vs HSU Research VTF-3 MK5 HP
- Monoprice Monolith 13 THX Ultra vs HSU Research VTF-15H MK2
- Monoprice Monolith 13 THX Ultra vs Rythmik FV15HP
- Monoprice Monolith 13 THX Ultra vs SVS PB17-Ultra R-Evolution
- Monoprice Monolith 13 THX Ultra vs Monoprice Monolith 16 THX Ultra
- Monoprice Monolith 13 THX Ultra vs JTR Speakers Captivator S2