Short answer: the Monoprice Monolith 13 THX Ultra. It ranks #47 of 97 subwoofers by sound quality at $1700; the Arendal 1723 Subwoofer 2V ranks #48 and costs $3100, so there is not much of a tradeoff to weigh.
What the Arendal 1723 Subwoofer 2V offers: 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. Watch for: 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.
What the Monoprice Monolith 13 THX Ultra offers: 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. Watch for: 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.
Buy the Monoprice Monolith 13 THX Ultra. It ranks higher for sound quality than the Arendal 1723 Subwoofer 2V and costs less, so there is no real case for the other one.
Specifications Side By Side
| Arendal 1723 Subwoofer 2V | Monoprice Monolith 13 THX Ultra | |
|---|---|---|
| Price | $3,100 | $1,700 |
| Ranked | #48 of 97 in Large Powered Home Subwoofers (Over 75 lbs) | #47 of 97 in Large Powered 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 |
Related Speaker Comparisons
Other pairings from the same speaker class worth checking:
- Monoprice Monolith 15 THX Ultra vs Klipsch RP-1600SW
- Harbottle Audio C24 L1 vs Rythmik FV18
- Rythmik FV18 vs HSU Research VTF-3 MK5 HP
- Monoprice Monolith 13 THX Ultra vs SVS PB16-Ultra
- SVS PB16-Ultra vs Arendal 1723 Subwoofer 2V
Prices on this page were last checked September 8, 2026 at 6:02 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 eBay
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 →
| CEA-2010-A Average (40-80Hz) | 121.0 dB |
|---|---|
| Cabinet Color | black, white |
| 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 |
| Measurement Source | Audioholics |
| 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 |
| Warranty | 10/5 |
| Weight | 132.5 lbs / 60.1 kg |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
Monoprice Monolith 13 THX Ultra: $1,700 eBay
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.
Notes: Product # 41496
Full Monoprice Monolith 13 THX Ultra review and specifications →
| CEA-2010-A Average (40-80Hz) | 121.1 dB |
|---|---|
| Cabinet Color | black |
| 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 |
| Measurement Source | Audioholics |
| 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 |
| Warranty | 5 |
| Weight | 153.2 lbs / 69.5 kg |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons