HSU Research ULS-15 MK2 vs Monoprice Monolith M-10 V2

Last updated: September 20, 2026

Short answer: the Monoprice Monolith M-10 V2 for deep budget bass, the HSU Research ULS-15 MK2 for a sealed design. The M-10 V2 is a 10-inch THX-certified ported sub with 500W RMS that reaches 17-20Hz, and it costs $245.03 less. The ULS-15 MK2’s sealed design delivers tight, accurate bass with low bloat.

HSU Research ULS-15 MK2 vs Monoprice Monolith M-10 V2

On the HSU Research ULS-15 MK2 side: Sealed design delivers tight, accurate bass with low bloat.

The case for the Monoprice Monolith M-10 V2: 10-inch THX-certified ported with 500W RMS reaches 17-20Hz.

Buy the HSU Research ULS-15 MK2. It is rated higher for sound quality, and the $245.03 saving on the Monoprice Monolith M-10 V2 is not enough to make up the difference.

Looking for alternatives? See the complete Subwoofers rankings.

Buy the HSU Research ULS-15 MK2 at HSU Research ($999.00) →Buy the Monoprice Monolith M-10 V2 at Amazon ($753.97) →

Specifications Side By Side

HSU Research ULS-15 MK2 Monoprice Monolith M-10 V2
Price$1,035$753.97
Ranked#3 of 145 in Medium Home Subwoofers (30-75 lbs)#109 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 dB93.9 dB
Output SPL at 20 Hz102.4 dB104.8 dB
Output SPL at 25 Hz107.7 dB108.5 dB
Output SPL at 31.5 Hz113.4 dB109.3 dB
Output SPL at 40 Hz118.3 dB109.7 dB
Output SPL at 50 Hz120.8 dB110.1 dB
Output SPL at 63 Hz121.2 dB110.6 dB
Output SPL at 80 Hz121.1 dB110.9 dB
Output SPL at 100 Hz120.7 dB111.2 dB
Output SPL at 125 Hz120.7 dB111.5 dB
CEA-2010-A Average (40-80Hz)120.3 dB110.3 dB
Dimensions19"H x 18"W x 19.5"D (482.6 x 457.2 x 495.3 mm)20.9"H x 15"W x 18.9"D (530.9 x 381.0 x 480.1 mm)
Weight65 lbs (29.5 kg)72.5 lbs (32.9 kg)
Warranty7/2(+3)5
Cabinet Colorblack, woodblack
CountryUnited StatesUnited States
Measurement SourceAudioholicsManufacturer
Frequency Response20-200Hz, ±1dB17-20Hz
Amplifier Power600W RMS / 2000W peak500W RMS
Crossover Frequency30-90Hz adjustable-
Phase Control0°-180°-
FeaturesQ control, sealed subwoofer, EQ1/EQ2 modes-
Drivers15" (381mm) driver10" (254mm) driver
Inputs-XLR, RCA, XLR passthrough out
XLR Input-Yes
RCA Input-Yes
TRS Input-No
Optical Input-No
Coaxial Input-No
USB Input-No
HDMI Input-No
AES Input-No
Aux Input-No
Buy the HSU Research ULS-15 MK2 at HSU Research ($999.00) →Buy the Monoprice Monolith M-10 V2 at Amazon ($753.97) →

More top alternatives to HSU Research ULS-15 MK2:

Prices on this page were last checked September 23, 2026 at 11:24 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

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.

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 →

Monoprice Monolith M-10 V2: $753.97 Amazon eBay

Monoprice Monolith M-10 V2 ranking card

Pros: 10-inch THX-certified ported with 500W RMS reaches 17-20Hz. HDF cabinet eliminates resonance-induced coloration. Extended EQ and THX EQ modes for flexibility. Low distortion output. Best for rooms under 2500 cubic feet. Exceptional budget value at $754.

Notes: Product # 42843

Full Monoprice Monolith M-10 V2 review and specifications →

AES InputNo
Amplifier Power500W RMS
Aux InputNo
CEA-2010-A Average (40-80Hz)110.3 dB
Cabinet Colorblack
Coaxial InputNo
CountryUnited States
Dimensions20.9"H x 15"W x 18.9"D (530.9 x 381.0 x 480.1 mm)
Drivers10" (254mm) driver
Enclosureported, front
Frequency Response17-20Hz
HDMI InputNo
InputsXLR, RCA, XLR passthrough out
Measurement SourceManufacturer
Optical InputNo
Output SPL at 15 Hz93.9 dB
Output SPL at 20 Hz104.8 dB
Output SPL at 25 Hz108.5 dB
Output SPL at 31.5 Hz109.3 dB
Output SPL at 40 Hz109.7 dB
Output SPL at 50 Hz110.1 dB
Output SPL at 63 Hz110.6 dB
Output SPL at 80 Hz110.9 dB
Output SPL at 100 Hz111.2 dB
Output SPL at 125 Hz111.5 dB
RCA InputYes
TRS InputNo
USB InputNo
Warranty5
Weight72.5 lbs (32.9 kg)
XLR InputYes
Check current price at Amazon ($753.97) →Search eBay for Monoprice Monolith M-10 V2 →