MartinLogan Dynamo 12 Powered Subwoofer - White

A Sealed 12-Inch Sub With 800 Watts Behind It

The MartinLogan Dynamo 12 pairs a 12-inch high-excursion aluminum woofer with a Magnitude amplifier rated at 800 watts continuous and 1,600 watts peak. It all sits in a sealed cabinet with no port, so there is no port noise to worry about. Rated response reaches down to 22 Hz.

This listing is the Satin White finish, a light alternative to the usual black box. The cabinet stands 16.75 inches tall and 15.75 inches wide and deep, and weighs 61.5 pounds. Wireless is built in, and the transmitter is included, so you are not tied to a long cable run.

Inputs for a Receiver, a Stereo Amp, or Both

Around back you get an RCA LFE input, a balanced XLR LFE input, stereo RCA line inputs, and speaker-level inputs for banana plugs. A sub output lets you add another subwoofer. Choose On, Auto, or 12V trigger power, and read your level on the backlit knob.

Tune It From Your Listening Seat

The free MartinLogan Subwoofer Control app for iOS and Android puts every setting on your phone. Set the level, crossover from 35 to 120 Hz, phase, and polarity. Switch between Movie, Music, and Night presets, or run the built-in tone sweep to find rattles in your room.

What Powers the New Dynamo Generation

Every setting runs through MartinLogan’s Vojtko DSP engine, a 500MHz processor with 64-bit resolution, named for the company’s chief audio technologist. The woofer is an anodized-aluminum cone in a stamped steel basket. A 1-inch-thick reinforced MDF baffle holds it firmly in the sealed enclosure.

Rated frequency response is 22 to 120 Hz, ±3 dB, measured anechoic through the LFE input. A dedicated 20 to 30 Hz control in the app adds or trims the deepest octave by up to 10 dB. Integrated anti-vibration feet ship with carpet spikes for soft floors.

Anthem Room Correction for the Final Polish

The Dynamo 12 works with Anthem Room Correction through the ARC Genesis software. Plug the sub into a PC or Mac with USB-C, measure with an ARC microphone, and upload the result. The microphone is sold separately, and firmware updates install the same way.

Who Is This Powered Subwoofer Best For?

• Medium and larger rooms — A 12-inch woofer and 800 watts continuous suit bigger spaces.
• Listeners who prefer a sealed design — A fully sealed MDF cabinet with a 1-inch-thick baffle.
• Bright, light-colored interiors — Satin White blends in where a black sub would stand out.
• Systems that need placement freedom — The included wireless transmitter frees the sub from a long cable.
• Not ideal for smaller rooms or tight spaces — The MartinLogan Abyss 10 in White uses the same 800-watt amplifier in a smaller 15-inch cabinet.

How Does It Connect to Your System?

From an AV receiver, connect its Sub or LFE output to the Dynamo 12’s LFE input with a subwoofer cable, or plug in the wireless transmitter. From a stereo amp, use the left and right line inputs or the speaker-level inputs. A subwoofer cable is not included.

Set the crossover and phase in the app, then run ARC Genesis if you have the microphone. Find the best spot, dial it in, and let it work.

Pairs Well With

Complete your system with these companions:

• Interconnect cables — You will need a subwoofer cable unless you go wireless.
• Floorstanding speakers — Extend a full-range pair below its natural limit.
• Bookshelf speakers — A 12-inch sub fills in the low end small speakers leave out.
• Integrated amplifiers — Connect through line-level or speaker-level inputs.

Frequently Asked Questions

Is the MartinLogan Dynamo 12 sealed or ported?

Sealed. The 12-inch woofer works in a sealed MDF cabinet with a 1-inch-thick reinforced baffle.

Does it include the wireless transmitter?

Yes. The receiver is built in and the transmitter comes in the box. A wired subwoofer cable is not included.

Do I need the ARC microphone?

Only for Anthem Room Correction, which also needs a PC or Mac. All other settings work through the free app or the rear panel.

Will it work with a stereo amplifier?

Yes. Use the speaker-level inputs with banana plugs, or the left and right line-level inputs from your amp’s pre-outs.

How big and heavy is it?

It measures 16.75 inches tall by 15.75 inches wide and deep, and weighs 61.5 pounds.

What warranty does it have?

MartinLogan warrants the Dynamo 12 against manufacturing defects for 3 years from delivery when bought from an authorized dealer.

See It in Action

MartinLogan introduces its next-generation Dynamo subwoofers on its official channel.

MartinLogan also walks through subwoofer setup and optimization.

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Learn More

Want to learn more about sealed versus ported subwoofers, subwoofer placement, or room correction? Visit our Learning Center for guides, tips, and expert advice.