HSU Research ULS-15 MK2 vs RSL (Rogersound Labs) Speedwoofer 10S MKII

Last updated: September 19, 2026

Short answer: the RSL Speedwoofer 10S MKII for value, the HSU Research ULS-15 MK2 for a sealed design. The 10S MKII is a 10-inch ported sub with a 400W RMS (1020W peak) XDR amplifier, and it costs $500 less. The ULS-15 MK2’s sealed design delivers tight, accurate bass with low bloat.

HSU Research ULS-15 MK2 vs RSL (Rogersound Labs) Speedwoofer 10S MKII

What the HSU Research ULS-15 MK2 gets right: Sealed design delivers tight, accurate bass with low bloat.

On the RSL (Rogersound Labs) Speedwoofer 10S MKII side: 10-inch ported with 400W RMS (1020W peak) XDR amplifier.

Buy the HSU Research ULS-15 MK2. It is rated higher for sound quality, and saving $500 with the RSL (Rogersound Labs) Speedwoofer 10S MKII does not make up for the sound-quality gap.

Looking for alternatives? See the complete Subwoofers rankings.

Buy the HSU Research ULS-15 MK2 at HSU Research ($999.00) →Buy the RSL (Rogersound Labs) Speedwoofer 10S MKII at RSL (Rogersound Labs) ($499) →

Specifications Side By Side

HSU Research ULS-15 MK2 RSL (Rogersound Labs) Speedwoofer 10S MKII
Price$1,035$450
Ranked#3 of 145 in Medium Home Subwoofers (30-75 lbs)#87 of 145 in Medium Home Subwoofers (30-75 lbs)
Enclosuresealedported, rear
Output SPL at 12.5 Hz93.7 dB-
Output SPL at 15 Hz98.0 dB89.0 dB
Output SPL at 20 Hz102.4 dB100.0 dB
Output SPL at 25 Hz107.7 dB105.0 dB
Output SPL at 31.5 Hz113.4 dB107.7 dB
Output SPL at 40 Hz118.3 dB110.3 dB
Output SPL at 50 Hz120.8 dB112.9 dB
Output SPL at 63 Hz121.2 dB113.0 dB
Output SPL at 80 Hz121.1 dB112.1 dB
Output SPL at 100 Hz120.7 dB111.4 dB
Output SPL at 125 Hz120.7 dB110.7 dB
CEA-2010-A Average (40-80Hz)120.3 dB112.1 dB
Dimensions19"H x 18"W x 19.5"D (482.6 x 457.2 x 495.3 mm)15.5"H x 15"W x 15.7"D (393.7 x 381.0 x 400.0 mm)
Weight65 lbs (29.5 kg)40.6 lbs (18.4 kg)
Warranty7/2(+3)5/2
Cabinet Colorblack, woodblack, white
CountryUnited StatesUnited States
Measurement SourceAudioholicsAudioholics
Frequency Response20-200Hz, ±1dB21-200Hz
Amplifier Power600W RMS / 2000W peak400W RMS
Crossover Frequency30-90Hz adjustable-
Phase Control0°-180°-
FeaturesQ control, sealed subwoofer, EQ1/EQ2 modes-
Drivers15" (381mm) driver10" (254mm) driver
Buy the HSU Research ULS-15 MK2 at HSU Research ($999.00) →Buy the RSL (Rogersound Labs) Speedwoofer 10S MKII at RSL (Rogersound Labs) ($499) →

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 →

RSL (Rogersound Labs) Speedwoofer 10S MKII: $450 RSL (Rogersound Labs) eBay

RSL (Rogersound Labs) Speedwoofer 10S MKII ranking card

Pros: 10-inch ported with 400W RMS (1020W peak) XDR amplifier. DSP with dual modes (LFE mode for 22Hz extension, Music mode for tight response). Quick tight musical bass at excellent $499 price. Wireless receiver built-in.

Full RSL (Rogersound Labs) Speedwoofer 10S MKII review and specifications →

Amplifier Power400W RMS
CEA-2010-A Average (40-80Hz)112.1 dB
Cabinet Colorblack, white
CountryUnited States
Dimensions15.5"H x 15"W x 15.7"D (393.7 x 381.0 x 400.0 mm)
Drivers10" (254mm) driver
Enclosureported, rear
Frequency Response21-200Hz
Measurement SourceAudioholics
Output SPL at 15 Hz89.0 dB
Output SPL at 20 Hz100.0 dB
Output SPL at 25 Hz105.0 dB
Output SPL at 31.5 Hz107.7 dB
Output SPL at 40 Hz110.3 dB
Output SPL at 50 Hz112.9 dB
Output SPL at 63 Hz113.0 dB
Output SPL at 80 Hz112.1 dB
Output SPL at 100 Hz111.4 dB
Output SPL at 125 Hz110.7 dB
Warranty5/2
Weight40.6 lbs (18.4 kg)
Check current price at RSL (Rogersound Labs) ($499) →Search eBay for RSL (Rogersound Labs) Speedwoofer 10S MKII →