MartinLogan Dynamo 1600X vs RSL (Rogersound Labs) Speedwoofer 10S MKII

Last updated: September 19, 2026

Short answer: the Dynamo 1600X for output headroom, the RSL Speedwoofer 10S MKII for a compact ported design. The sealed 15-inch Dynamo’s 900W RMS and 1800W peak produce forceful, clean, tight low bass, but it costs $1606.77 and its 121.5 dB mid-range output is a limitation. The 10-inch ported RSL runs 400W RMS and 1020W peak through its XDR amplifier.

MartinLogan Dynamo 1600X vs RSL (Rogersound Labs) Speedwoofer 10S MKII

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

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

Buy the MartinLogan Dynamo 1600X when sound quality outweighs the price for you, and the RSL (Rogersound Labs) Speedwoofer 10S MKII when the price outweighs sound quality instead.

Want more options? Browse the full Subwoofers rankings.

Buy the RSL (Rogersound Labs) Speedwoofer 10S MKII at RSL (Rogersound Labs) ($499) →

Specifications Side By Side

MartinLogan Dynamo 1600X RSL (Rogersound Labs) Speedwoofer 10S MKII
Price$1,606.77$450
Ranked#2 of 145 in Medium Home Subwoofers (30-75 lbs)#87 of 145 in Medium Home Subwoofers (30-75 lbs)
Enclosuresealedported, rear
Output SPL at 15 Hz86.2 dB89.0 dB
Output SPL at 20 Hz99.4 dB100.0 dB
Output SPL at 25 Hz103.9 dB105.0 dB
Output SPL at 31.5 Hz111.7 dB107.7 dB
Output SPL at 40 Hz118.4 dB110.3 dB
Output SPL at 50 Hz121.0 dB112.9 dB
Output SPL at 63 Hz121.8 dB113.0 dB
Output SPL at 80 Hz121.0 dB112.1 dB
Output SPL at 100 Hz120.2 dB111.4 dB
Output SPL at 125 Hz119.0 dB110.7 dB
CEA-2010-A Average (40-80Hz)120.5 dB112.1 dB
Dimensions20.1"H x 17.9"W x 19.1"D (510.5 x 454.7 x 485.1 mm)15.5"H x 15"W x 15.7"D (393.7 x 381.0 x 400.0 mm)
Weight56 lbs (25.4 kg)40.6 lbs (18.4 kg)
Warranty35/2
Cabinet Colorblackblack, white
CountryUnited StatesUnited States
Measurement SourceAudioholicsAudioholics
Frequency Response20-200Hz, ±3dB21-200Hz
Amplifier Power900W RMS / 1800W peak400W RMS
InputsRCA (stereo and LFE), XLR (LFE), speaker-level (banana)-
Drivers15" (381mm) driver10" (254mm) driver
XLR InputYes-
RCA InputYes-
TRS InputNo-
Optical InputNo-
Coaxial InputNo-
USB InputNo-
HDMI InputNo-
AES InputNo-
Aux InputNo-
Buy the RSL (Rogersound Labs) Speedwoofer 10S MKII at RSL (Rogersound Labs) ($499) →

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The Two Speakers In Full

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 →

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 →