Short answer: the JTR Speakers Captivator 212PRO for the higher ranking, the HSU Research ULS-15 MK2 for the lower price. The JTR Speakers Captivator 212PRO ranks #1 of 137 subwoofers at $2600. The HSU Research ULS-15 MK2 ranks #3 at $1035, $1565 cheaper.
The case for the HSU Research ULS-15 MK2: Sealed design delivers tight, accurate bass with low bloat.
What the JTR Speakers Captivator 212PRO gets right: Dual 12-inch ported with 1200W DSP amp and full digital sound processor. Set against that: Premium pricing at $2,600, ported room interaction, and 32 kg mid-size footprint.
Buy the HSU Research ULS-15 MK2 if the price matters more than the ranking. Buy the JTR Speakers Captivator 212PRO if the ranking matters more than the price.
Specifications Side By Side
| HSU Research ULS-15 MK2 | JTR Speakers Captivator 212PRO | |
|---|---|---|
| Price | $1,035 | $2,600 |
| Ranked | #3 of 137 in Medium Powered Home Subwoofers (30-75 lbs) | #1 of 137 in Medium Powered Home Subwoofers (30-75 lbs) |
| Enclosure | sealed | ported, front |
| Output SPL at 12.5 Hz | 93.7 dB | - |
| Output SPL at 15 Hz | 98.0 dB | - |
| Output SPL at 20 Hz | 102.4 dB | - |
| Output SPL at 25 Hz | 107.7 dB | 95.4 dB |
| Output SPL at 31.5 Hz | 113.4 dB | 112.2 dB |
| Output SPL at 40 Hz | 118.3 dB | 122.7 dB |
| Output SPL at 50 Hz | 120.8 dB | 129.2 dB |
| Output SPL at 63 Hz | 121.2 dB | 131.3 dB |
| Output SPL at 80 Hz | 121.1 dB | 133.2 dB |
| Output SPL at 100 Hz | 120.7 dB | 134.6 dB |
| Output SPL at 125 Hz | 120.7 dB | 135.2 dB |
| CEA-2010-A Average (40-80Hz) | 120.3 dB | 129.1 dB |
| Dimensions | 19.0"H x 18.0"W x 19.5"D (482.6 x 457.2 x 495.3 mm) | 16.0"H x 30.0"W x 22.5"D (406.4 x 762.0 x 571.5 mm) |
| Weight | 65 lbs / 29.5 kg | 71 lbs / 32.2 kg |
| Warranty | 7/2(+3) | 5/3 |
| Cabinet Color | black, wood | black |
| Country | United States | United States |
| Measurement Source | Audioholics | Data-bass |
| Frequency Response | 20-200Hz, ±1dB | - |
| Power Output (Watts) | 600W RMS / 2000W peak | 1200W RMS |
| Crossover | 30-90Hz adjustable | - |
| Phase Control | 0°-180° | - |
| Features | Q control, sealed subwoofer, EQ1/EQ2 modes | - |
| Drivers | 15" (381mm) driver | 2x 12" (305mm) drivers |
| Input Connections | - | XLR and RCA |
| Amplifier Type | - | Class D with DSP |
The Two Speakers In Full
HSU Research ULS-15 MK2: $1,035
Pros: Sealed design delivers tight, accurate bass with low bloat. 600W BASH amplifier. 30% less expensive and 20 lbs lighter than predecessor. Easy integration with Q and EQ controls. Great value in the 15” sub market at under $850 shipped.
Notes: Price includes shipping
| CEA-2010-A Average (40-80Hz) | 120.3 dB |
|---|---|
| Cabinet Color | black, wood |
| Country | United States |
| Crossover | 30-90Hz adjustable |
| Dimensions | 19.0"H x 18.0"W x 19.5"D (482.6 x 457.2 x 495.3 mm) |
| Drivers | 15" (381mm) driver |
| Enclosure | sealed |
| Features | Q control, sealed subwoofer, EQ1/EQ2 modes |
| Frequency Response | 20-200Hz, ±1dB |
| Measurement Source | Audioholics |
| Output SPL at 12.5 Hz | 93.7 dB |
| Output SPL at 15 Hz | 98.0 dB |
| Output SPL at 20 Hz | 102.4 dB |
| Output SPL at 25 Hz | 107.7 dB |
| Output SPL at 31.5 Hz | 113.4 dB |
| Output SPL at 40 Hz | 118.3 dB |
| Output SPL at 50 Hz | 120.8 dB |
| Output SPL at 63 Hz | 121.2 dB |
| Output SPL at 80 Hz | 121.1 dB |
| Output SPL at 100 Hz | 120.7 dB |
| Output SPL at 125 Hz | 120.7 dB |
| Phase Control | 0°-180° |
| Power Output (Watts) | 600W RMS / 2000W peak |
| Warranty | 7/2(+3) |
| Weight | 65 lbs / 29.5 kg |
- Head-to-Head Comparisons
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JTR Speakers Captivator 212PRO: $2,600
Pros: Dual 12-inch ported with 1200W DSP amp and full digital sound processor. Dual-12 output beyond impressive with distortion-free performance. Bulletproof construction for pro sound installations.
Cons: Premium pricing at $2,600, ported room interaction, and 32 kg mid-size footprint.
Notes: Looks like “PA sub”
| Amplifier Type | Class D with DSP |
|---|---|
| CEA-2010-A Average (40-80Hz) | 129.1 dB |
| Cabinet Color | black |
| Country | United States |
| Dimensions | 16.0"H x 30.0"W x 22.5"D (406.4 x 762.0 x 571.5 mm) |
| Drivers | 2x 12" (305mm) drivers |
| Enclosure | ported, front |
| Input Connections | XLR and RCA |
| Measurement Source | Data-bass |
| Output SPL at 25 Hz | 95.4 dB |
| Output SPL at 31.5 Hz | 112.2 dB |
| Output SPL at 40 Hz | 122.7 dB |
| Output SPL at 50 Hz | 129.2 dB |
| Output SPL at 63 Hz | 131.3 dB |
| Output SPL at 80 Hz | 133.2 dB |
| Output SPL at 100 Hz | 134.6 dB |
| Output SPL at 125 Hz | 135.2 dB |
| Power Output (Watts) | 1200W RMS |
| Warranty | 5/3 |
| Weight | 71 lbs / 32.2 kg |
- Head-to-Head Comparisons
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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.