HSU Research ULS-15 MK2 vs Klipsch SPL-120

Last updated: September 16, 2026

Short answer: the HSU Research ULS-15 MK2 if sound quality matters most, the Klipsch SPL-120 if price matters most. The HSU Research ULS-15 MK2 ranks #3 of 145 subwoofers at $999. The Klipsch SPL-120 ranks #18 at $429.99, $569.01 cheaper.

HSU Research ULS-15 MK2 vs Klipsch SPL-120

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 Klipsch SPL-120 offers: 12-inch ported with 300W delivers room-filling bass hitting nearly 118dB max SPL. Clean accurate response across whole bass register with tight controlled response at high volumes. Wireless connectivity with optional WA-2 accessory. Watch for: No detailed measurement caveats are currently recorded.

Buy the HSU Research ULS-15 MK2 when sound quality outweighs the price for you, and the Klipsch SPL-120 when the price outweighs sound quality instead.

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

Buy the HSU Research ULS-15 MK2 at HSU Research ($999.00) →Buy the Klipsch SPL-120 at Amazon ($429.99) →

Specifications Side By Side

HSU Research ULS-15 MK2 Klipsch SPL-120
Price$1,035$429.99
Ranked#3 of 145 in Medium Home Subwoofers (30-75 lbs)#18 of 145 in Medium Home Subwoofers (30-75 lbs)
Enclosuresealedported, front
Output SPL at 12.5 Hz93.7 dB-
Output SPL at 15 Hz98.0 dB-
Output SPL at 20 Hz102.4 dB97.9 dB
Output SPL at 25 Hz107.7 dB108.2 dB
Output SPL at 31.5 Hz113.4 dB113.5 dB
Output SPL at 40 Hz118.3 dB116.8 dB
Output SPL at 50 Hz120.8 dB119.8 dB
Output SPL at 63 Hz121.2 dB120.9 dB
Output SPL at 80 Hz121.1 dB121.2 dB
Output SPL at 100 Hz120.7 dB-
Output SPL at 125 Hz120.7 dB-
CEA-2010-A Average (40-80Hz)120.3 dB119.7 dB
Dimensions19"H x 18"W x 19.5"D (482.6 x 457.2 x 495.3 mm)17.7"H x 14.7"W x 19.9"D (450.8 x 372.9 x 504.7 mm)
Weight65 lbs (29.5 kg)45 lbs (20.4 kg)
Warranty7/2(+3)5/2
Cabinet Colorblack, woodblack
CountryUnited StatesUnited States
Measurement SourceAudioholicsBrent Butterworth
Frequency Response20-200Hz, ±1dB24-125Hz
Amplifier Power600W RMS / 2000W peak300W RMS
Crossover Frequency30-90Hz adjustable-
Phase Control0°-180°-
FeaturesQ control, sealed subwoofer, EQ1/EQ2 modes-
Drivers15" (381mm) driver12" (305mm) driver
Output SPL at 16 Hz-87.2 dB
Buy the HSU Research ULS-15 MK2 at HSU Research ($999.00) →Buy the Klipsch SPL-120 at Amazon ($429.99) →

How HSU Research ULS-15 MK2 compares with other leading options:

Prices on this page were last checked September 16, 2026 at 12:41 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.

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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 →

Klipsch SPL-120: $429.99 Amazon eBay

Klipsch SPL-120 ranking card

Pros: 12-inch ported with 300W delivers room-filling bass hitting nearly 118dB max SPL. Clean accurate response across whole bass register with tight controlled response at high volumes. Wireless connectivity with optional WA-2 accessory.

Full Klipsch SPL-120 review and specifications →

Amplifier Power300W RMS
CEA-2010-A Average (40-80Hz)119.7 dB
Cabinet Colorblack
CountryUnited States
Dimensions17.7"H x 14.7"W x 19.9"D (450.8 x 372.9 x 504.7 mm)
Drivers12" (305mm) driver
Enclosureported, front
Frequency Response24-125Hz
Measurement SourceBrent Butterworth
Output SPL at 16 Hz87.2 dB
Output SPL at 20 Hz97.9 dB
Output SPL at 25 Hz108.2 dB
Output SPL at 31.5 Hz113.5 dB
Output SPL at 40 Hz116.8 dB
Output SPL at 50 Hz119.8 dB
Output SPL at 63 Hz120.9 dB
Output SPL at 80 Hz121.2 dB
Warranty5/2
Weight45 lbs (20.4 kg)
Check current price at Amazon ($429.99) →Search eBay for Klipsch SPL-120 →