HSU Research ULS-15 MK2 vs JBL HDI-1200P

Last updated: September 14, 2026

Short answer: the HSU Research ULS-15 MK2. It ranks #3 of 145 subwoofers by sound quality at $999; the JBL HDI-1200P ranks #24 and costs $2310, so there is little reason to consider the other one.

HSU Research ULS-15 MK2 vs JBL HDI-1200P

What the HSU Research ULS-15 MK2 offers: 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. Watch for: No detailed measurement caveats are currently recorded.

What the JBL HDI-1200P offers: Dual-ported 1000W 12-inch high-excursion cone. Symmetric Field motor design controls stray magnetic flux for refined response. Plays very clean with super low distortion (<1% THD) down to tuning frequency. Dual down-firing ports extend low-end with 28-150Hz frequency response. Adjustable crossover (50-150Hz) and phase control for seamless integration. Compact ~17-inch cube with automotive-gloss or furniture-grade finishes. Watch for: No detailed measurement caveats are currently recorded.

Buy the HSU Research ULS-15 MK2. It ranks higher for sound quality than the JBL HDI-1200P and costs less, which settles it without a real tradeoff to make.

Still deciding? The full Subwoofers rankings cover every ranked option.

Buy the HSU Research ULS-15 MK2 at HSU Research ($999.00) →

Specifications Side By Side

HSU Research ULS-15 MK2 JBL HDI-1200P
Price$1,035$2,310
Ranked#3 of 145 in Medium Home Subwoofers (30-75 lbs)#24 of 145 in Medium Home Subwoofers (30-75 lbs)
Enclosuresealedported, bottom
Output SPL at 12.5 Hz93.7 dB-
Output SPL at 15 Hz98.0 dB-
Output SPL at 20 Hz102.4 dB-
Output SPL at 25 Hz107.7 dB93.2 dB
Output SPL at 31.5 Hz113.4 dB109.5 dB
Output SPL at 40 Hz118.3 dB115.6 dB
Output SPL at 50 Hz120.8 dB119.1 dB
Output SPL at 63 Hz121.2 dB119.0 dB
Output SPL at 80 Hz121.1 dB114.9 dB
Output SPL at 100 Hz120.7 dB115.4 dB
Output SPL at 125 Hz120.7 dB117.2 dB
CEA-2010-A Average (40-80Hz)120.3 dB117.2 dB
Dimensions19"H x 18"W x 19.5"D (482.6 x 457.2 x 495.3 mm)16.9"H x 16.3"W x 17.8"D (430.5 x 414.0 x 451.4 mm)
Weight65 lbs (29.5 kg)70.8 lbs (32.1 kg)
Warranty7/2(+3)5
Cabinet Colorblack, woodblack, wood
CountryUnited StatesUnited States
Measurement SourceAudioholicsAudioholics
Frequency Response20-200Hz, ±1dB28-150Hz (-6dB)
Amplifier Power600W RMS / 2000W peak1000W RMS
Crossover Frequency30-90Hz adjustable50-150Hz, 24dB/octave
Phase Control0°-180°-
FeaturesQ control, sealed subwoofer, EQ1/EQ2 modesSingle-band parametric EQ
Drivers15" (381mm) driver12" (305mm) driver
Inputs-RCA (unbalanced) and XLR (balanced)
Buy the HSU Research ULS-15 MK2 at HSU Research ($999.00) →

More worthwhile head-to-heads for HSU Research ULS-15 MK2:

Prices on this page were last checked September 14, 2026 at 1:47 AM 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.

As an eBay Partner, we may be compensated if you make a purchase.

The Two Speakers In Full

HSU Research ULS-15 MK2: $1,035 HSU Research eBay

HSU Research ULS-15 MK2 ranking card

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

Full HSU Research ULS-15 MK2 review and specifications →

Amplifier Power600W RMS / 2000W peak
CEA-2010-A Average (40-80Hz)120.3 dB
Cabinet Colorblack, wood
CountryUnited States
Crossover Frequency30-90Hz adjustable
Dimensions19"H x 18"W x 19.5"D (482.6 x 457.2 x 495.3 mm)
Drivers15" (381mm) driver
Enclosuresealed
FeaturesQ control, sealed subwoofer, EQ1/EQ2 modes
Frequency Response20-200Hz, ±1dB
Measurement SourceAudioholics
Output SPL at 12.5 Hz93.7 dB
Output SPL at 15 Hz98.0 dB
Output SPL at 20 Hz102.4 dB
Output SPL at 25 Hz107.7 dB
Output SPL at 31.5 Hz113.4 dB
Output SPL at 40 Hz118.3 dB
Output SPL at 50 Hz120.8 dB
Output SPL at 63 Hz121.2 dB
Output SPL at 80 Hz121.1 dB
Output SPL at 100 Hz120.7 dB
Output SPL at 125 Hz120.7 dB
Phase Control0°-180°
Warranty7/2(+3)
Weight65 lbs (29.5 kg)
Check current price at HSU Research ($999.00) →Search eBay for HSU Research ULS-15 MK2 →

JBL HDI-1200P: $2,310 eBay

JBL HDI-1200P ranking card

Pros: Dual-ported 1000W 12-inch high-excursion cone. Symmetric Field motor design controls stray magnetic flux for refined response. Plays very clean with super low distortion (<1% THD) down to tuning frequency. Dual down-firing ports extend low-end with 28-150Hz frequency response. Adjustable crossover (50-150Hz) and phase control for seamless integration. Compact ~17-inch cube with automotive-gloss or furniture-grade finishes.

Full JBL HDI-1200P review and specifications →

Amplifier Power1000W RMS
CEA-2010-A Average (40-80Hz)117.2 dB
Cabinet Colorblack, wood
CountryUnited States
Crossover Frequency50-150Hz, 24dB/octave
Dimensions16.9"H x 16.3"W x 17.8"D (430.5 x 414.0 x 451.4 mm)
Drivers12" (305mm) driver
Enclosureported, bottom
FeaturesSingle-band parametric EQ
Frequency Response28-150Hz (-6dB)
InputsRCA (unbalanced) and XLR (balanced)
Measurement SourceAudioholics
Output SPL at 25 Hz93.2 dB
Output SPL at 31.5 Hz109.5 dB
Output SPL at 40 Hz115.6 dB
Output SPL at 50 Hz119.1 dB
Output SPL at 63 Hz119.0 dB
Output SPL at 80 Hz114.9 dB
Output SPL at 100 Hz115.4 dB
Output SPL at 125 Hz117.2 dB
Warranty5
Weight70.8 lbs (32.1 kg)
Search eBay for JBL HDI-1200P →