HSU Research ULS-15 MK2 vs MartinLogan Dynamo 1600X

Last updated: September 19, 2026

Short answer: the MartinLogan Dynamo 1600X for output, the HSU Research ULS-15 MK2 for value. The Dynamo 1600X is a sealed 15-inch with 900W RMS and 1800W peak that delivers forceful, clean, tight low bass, though our notes flag its mid-range 121.5 dB output as a catch. The ULS-15 MK2’s sealed design delivers tight, accurate bass with low bloat and it costs $607.77 less.

HSU Research ULS-15 MK2 vs MartinLogan Dynamo 1600X

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

The case for the MartinLogan Dynamo 1600X: Sealed 15-inch with 900W RMS, 1800W peak delivers forceful clean tight low bass. The catch: Ported design room integration needs, mid-range 121.5 dB output, and $1,607 price.

Buy the HSU Research ULS-15 MK2. Both are rated the same for sound quality, and it costs $607.77 less than the MartinLogan Dynamo 1600X.

Want more options? Browse the full Subwoofers rankings.

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

Specifications Side By Side

HSU Research ULS-15 MK2 MartinLogan Dynamo 1600X
Price$1,035$1,606.77
Ranked#3 of 145 in Medium Home Subwoofers (30-75 lbs)#2 of 145 in Medium Home Subwoofers (30-75 lbs)
Enclosuresealedsealed
Output SPL at 12.5 Hz93.7 dB-
Output SPL at 15 Hz98.0 dB86.2 dB
Output SPL at 20 Hz102.4 dB99.4 dB
Output SPL at 25 Hz107.7 dB103.9 dB
Output SPL at 31.5 Hz113.4 dB111.7 dB
Output SPL at 40 Hz118.3 dB118.4 dB
Output SPL at 50 Hz120.8 dB121.0 dB
Output SPL at 63 Hz121.2 dB121.8 dB
Output SPL at 80 Hz121.1 dB121.0 dB
Output SPL at 100 Hz120.7 dB120.2 dB
Output SPL at 125 Hz120.7 dB119.0 dB
CEA-2010-A Average (40-80Hz)120.3 dB120.5 dB
Dimensions19"H x 18"W x 19.5"D (482.6 x 457.2 x 495.3 mm)20.1"H x 17.9"W x 19.1"D (510.5 x 454.7 x 485.1 mm)
Weight65 lbs (29.5 kg)56 lbs (25.4 kg)
Warranty7/2(+3)3
Cabinet Colorblack, woodblack
CountryUnited StatesUnited States
Measurement SourceAudioholicsAudioholics
Frequency Response20-200Hz, ±1dB20-200Hz, ±3dB
Amplifier Power600W RMS / 2000W peak900W RMS / 1800W peak
Crossover Frequency30-90Hz adjustable-
Phase Control0°-180°-
FeaturesQ control, sealed subwoofer, EQ1/EQ2 modes-
Drivers15" (381mm) driver15" (381mm) driver
Inputs-RCA (stereo and LFE), XLR (LFE), speaker-level (banana)
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) →

More top alternatives to MartinLogan Dynamo 1600X:

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 →

MartinLogan Dynamo 1600X: $1,606.77 eBay

MartinLogan Dynamo 1600X ranking card

Pros: Sealed 15-inch with 900W RMS, 1800W peak delivers forceful clean tight low bass. Easily configurable as forward-firing or down-firing. Smartphone app with Anthem Room Correction (ARC) optimizes bass across room. Wireless capable with optional SWT-X module.

Cons: Ported design room integration needs, mid-range 121.5 dB output, and $1607 price.

Full MartinLogan Dynamo 1600X review and specifications →

AES InputNo
Amplifier Power900W RMS / 1800W peak
Aux InputNo
CEA-2010-A Average (40-80Hz)120.5 dB
Cabinet Colorblack
Coaxial InputNo
CountryUnited States
Dimensions20.1"H x 17.9"W x 19.1"D (510.5 x 454.7 x 485.1 mm)
Drivers15" (381mm) driver
Enclosuresealed
Frequency Response20-200Hz, ±3dB
HDMI InputNo
InputsRCA (stereo and LFE), XLR (LFE), speaker-level (banana)
Measurement SourceAudioholics
Optical InputNo
Output SPL at 15 Hz86.2 dB
Output SPL at 20 Hz99.4 dB
Output SPL at 25 Hz103.9 dB
Output SPL at 31.5 Hz111.7 dB
Output SPL at 40 Hz118.4 dB
Output SPL at 50 Hz121.0 dB
Output SPL at 63 Hz121.8 dB
Output SPL at 80 Hz121.0 dB
Output SPL at 100 Hz120.2 dB
Output SPL at 125 Hz119.0 dB
RCA InputYes
TRS InputNo
USB InputNo
Warranty3
Weight56 lbs (25.4 kg)
XLR InputYes
Search eBay for MartinLogan Dynamo 1600X →