Dynamo 800X

Wireless Control, Wireless Room Correction, and Wireless Signal Connection: Low-Frequency Power and Accuracy

SWT-X Wireless Subwoofer Kit Not Currently Available

Dynamo 800X features a 600 Watt (peak) amplifier, 10-inch audiophile grade woofer, extensive input options, optional wireless connectivity, control via a Bluetooth app, Anthem Room Correction (ARC®), and user-configurable front- or down-firing design. Dramatic bass detail and attack, superb extension, and room-shaking output ensure a compelling music and home theater experience.

$899.99 each
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Dynamo 800X
Product Highlights

  • 10-inch inverted surround poly cone woofer
  • 600 Watts (peak) amplifier
  • Sealed non-resonant cabinet
  • Digital control system via smartphone app
  • Anthem Room Correction (ARC®) via smartphone app or PC
  • Robust connection options, including RCA and speaker level inputs; 12V Trigger
  • Configurable front or down-firing design


MartinLogan’s Subwoofer Control app uses a Bluetooth connection to simplify setup and configuration of Dynamo 600X, 800X, 1100X, and 1600X. App based controls include volume level, low-pass filter (frequency and order), phase, 20–30Hz level, three preset listening modes, and control of Anthem Room Correction. A unique tone sweep feature assists users in locating areas in listening rooms where troublesome rattles or resonances may occur. A single press of a button allows listeners to initiate a tone sweep from 20–120Hz. If a rattle or resonance occurs in the room any frequency can be held, allowing the listener to investigate and identify the source of the unwanted noise.

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In the lab, MartinLogan engineers strive for transparency. Outside the lab, there’s one wildcard our engineers can never account for—the listening room. The unique size and shape of a listening space (and its contents) can make bass waves do unpredictable things, greatly affecting a subwoofer’s overall performance. Anthem Room Correction measures low-frequency sound output in a room and compares it to optimal response curves that account for spatial anomalies. The advanced algorithms of Anthem Room Correction effectively remove anomalies, leaving only the ideal standard— realistically blended, natural-sounding bass. Dynamo 600X, 800X, 1100X, and 1600X utilize a Bluetooth connection with a smartphone or USB connection with a PC to run Anthem Room Correction.

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When placed in a cabinet or other discreet location, Dynamo 800X, 1100X, and 1600X subwoofers can easily convert from standard down-firing to front-firing orientation, with no tools or special skills required. A grille is provided for use in front-firing applications.



Although correct placement plays a key role in optimizing subwoofer performance, sometimes it imposes the inconvenience of running long lengths of cable through walls, along baseboards or under floors and carpets. To solve the problem, Dynamo 600X, 800X, 1100X, and 1600X include a connection port for an optional wireless system. MartinLogan’s new SWT-X Wireless Subwoofer System (sold separately) incorporates the latest in wireless audio transmission technology, including 2.4GHz dynamic frequency selection, forward error correction, and a range up to 50 feet. Easy to install in the subwoofer, the SWT-X receiver requires no external power source or audio connections.



Dynamo 400, 600X, 800X, 1100X, and 1600X subwoofers feature left and right input via RCA line level as well as speaker level connections.


Dynamo 400 and 600X’s right inputs double as an LFE input for home theater applications. Dynamo 800X ups the ante by adding a discrete LFE RCA line level input. Dynamo 1100X and 1600X go one step further by adding both XLR and RCA inputs for LFE connection.


Dynamo 800X, 1100X, and 1600X feature 12V Trigger Inputs, allowing an external device to turn the subwoofer on and off.


Dynamo 800X, 1100X, and 1600X subwoofers features left and right input via robust connection and a control system that allows simultaneous connection of both 2-channel stereo music and multi-channel home theater and allows each source to have individual crossover and level settings, giving listeners a perfect performance in every application. LFE inputs use no low-pass filter, leaving crossover control to the processor. Left and right inputs integrate discrete user-adjustable low-pass filters allowing different level and crossover points when playing back two channel music.



The latest generation of MartinLogan Dynamo subwoofers feature advanced-design woofers with inverted surrounds and powerful magnet, motor, and suspension designs. In front-fire mode the unique inverted surround design maximizes excursion clearance behind the grill cover. When positioned in a down-firing configuration, the inverted surround significantly reduces airflow related turbulence for an articulate and detailed low-frequency experience. These advanced-technology woofers pair a high-power magnet structure (significantly more robust than previous generations) with low-mass diaphragms to provide massive excursions while perfectly preserving the tiniest bass detail. The exceptional damping properties of the cone ensure a smooth, non-resonant response necessary for truly seamless blending with high-performance loudspeakers. Every element of Dynamo subwoofers has been meticulously designed to deliver a staggering low-frequency performance – all without a hint of distortion.


Dynamo subwoofer class-D amplifiers operate with extremely low levels of distortion and deliver dynamic impact with plenty of overhead. Low- noise, high-power switching power supplies produce clean power efficiently in a small space and effortlessly provide tremendous levels of current. Both feature high-quality MOSFET transistors, transformers, noise-suppression networks, and control circuitry. The switching power supply combined with reliable class-D technology means there’s virtually no energy lost in the subwoofer system.



The IME filter used in the Dynamo subwoofers is derived from the inverse of the unfiltered driver response. Precision IME filtering yields extremely accurate low-frequency response—superior to that provided by the simple second-order high-Q filters typically found in subwoofers in this price range.


Although ports, when correctly designed, are a convenient and cost-effective way of increasing low-frequency output, when used in small cabinets their reliance on resonant energy can impair bass quality. Dynamo 800X, 1100X, and 1600X are compact, sealed subwoofer systems that minimize transient-blurring group delay while maintaining smooth, consistent response, regardless of music or movie source material. The cabinets are constructed from the finest composite material for acoustic integrity. Inside, critically placed structural cross-bracing provides a stable foundation for the woofer, while the added rigidity keeps cabinet-induced resonances and non-linearities to inaudible levels.



Dynamo 800X, 1100X, and 1600X come with custom ETC spikes which can be used to enhance stability on thick carpets, or create tighter coupling between subwoofer and floor to enhance overall sound quality. The built-in spikes are conveniently and discretely hidden underneath the rubber feet.


The Future of Audio: Integrated Systems?

"In the end, bass on this system was deep, controlled, and less distracting than on many systems. I had a greater sense than is usual that bass was just part of the music, not something generated by an audio system."

—Tom Martin, The Absolute Sound
Read the full review»

Stereophile 2019 Product of the Year Editor's Choice Award


2019 Stereophile Product of the Year Editor's Choice AwardWhen you're a fan of a prodigious, but clean and accurate, bottom end, choosing a value-packed powered sub with built-in room correction is a no-brainer. At $800 each, you can start with one, and when your budget allows, add another. Your music will thank you!


Awarded in response the Larry Greenhill's January 2019 review.


—Jon Iverson, Stereophile
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When You Become Attached- MartinLogan Motion 4i Speakers and Dynamo 800X Subwoofer

"I was already a fan of MartinLogan products, loving their speakers such as the $80,000 Neolith, but wasn’t sure how much the quality trickled down into the lower-priced products. Consider me impressed. I have not seen many products in these price ranges that can compete, and certainly none that look as good."

—Michael Laurance, The Shoestring Audiophile
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MartinLogan Motion Speakers & Dynamo 800 Sub 5.1 Speaker System Review

"When space is at a premium, but you refuse to cut corners when it comes to audio fidelity, a system comprised of MartinLogan’s Motion 4i, 8i and Dynamo 800X is a solution that I enthusiastically recommend."

—Mark Henninger, AVS Forum
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MartinLogan Dynamo 800X Powered Subwoofer

"MartinLogan’s Dynamo 800X is the first subwoofer I’ve reviewed that combines digital control, signal connection, and room correction—all three wirelessly—in a small, powerful package. I heard no difference between the wireless and wired connections, and once I’d found good positions for the Dynamos, set their output level correctly, and identified their optimal crossover frequencies, their sound seamlessly blended with that of my Quad electrostatics, deepening the ESL-989s’ soundstages and deep-bass extension and expanding their dynamic range, and enhancing their three-dimensionality, all at a price far below that of larger subwoofers I’ve reviewed."

—Larry Greenhill, Stereophile
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[YouTube] MartinLogan Dynamo Subwoofer Series Overview & Comparison


—Gene DellaSala, Audioholics
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MartinLogan Dynamo 800X Subwoofer Review

"The MartinLogan Dynamo 800X is ideal to pair with some bookshelf speakers and complete a music system. With integrated Anthem Room Correction, you get a flat bass response in your room without much work, and the transition from the sub to the speakers is virtually invisible. If you need deeper bass, MartinLogan offers the dynamo in larger sizes as well."

—Chris Heinenon, Reference Home Theater
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MartinLogan Dynamo 800X Subwoofer Review

"Paired up with some nice speakers like the MartinLogan Motion 4i bookshelf/satellites I used in this system this sub shows how far technology—especially amplification and DSP—has come in terms of making such a small yet capable performer possible. Within the specific parameters where someone would find a compact subwoofer like this appealing, thanks to its features and overall performance, the MartinLogan Dynamo 800X is a Top Choice for 2018."

—Mark Henninger, AVS Forum
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Specifications are subject to change without notice

Frequency Response

24–200 Hz ±3 dB. Anechoic in LFE mode.


RCA: 8,300 Ohms Speaker Level: 2,000 Ohms (red to black)

Low Frequency Transducer

10” (25.4cm) high-excursion, inverted surround, polypropylene cone in a stamped steel basket with extended throw driver assembly; sealed non- resonant cabinet design.


300 Watts (600 peak)


Sub Control App: iOS and Android
Anthem Room Correction: iOS, Android, and PC

Room Correction

Anthem Room Correction (ARC)

Controls (Backplate)

Level: Min–Max
Setting Control: Local, App
Power Mode: On, Trigger, Auto

Controls (via Bluetooth)

Level: -40 to 12dB
Low-Pass Filter (Frequency): 35–120Hz
Low-Pass Filter (Order): Bypass, Third, Fourth
Phase: 0–180° (1° Increments)
Phase (Polarity): Normal, Inverted
Preset Listening Modes: Music, Night, Movie
20–30Hz Level: ±10dB
Anthem Room Correction (ARC): On, Off
Tone Sweep (20–120Hz): On, Off, Pause (Frequency)

Inputs (Audio)

Line Level: Left, Right, and LFE
Speaker Level: Left and Right via banana jacks

Inputs (Audio, Wireless)

SWT-X Receiver & Transmitter (sold separately)

Inputs (Other)

USB: Micro USB (for ARC/Firmware Update)
Trigger: 3.5mm, 5–24 DC

Power Draw

Typical: 70W, Max: 360W, Idle: 10W, Standby: 0.5W


Rubber, ETC (Energy Transfer Coupler) Spikes


30 lbs. (13.6 kg)

Dimensions (HxWxD), Front-Firing

14.6" x 12.4" x 12.7"
(37.1 cm x 31.5cm x 32.4cm)

Dimensions (HxWxD), Down-Firing

13.7" x 12.4 " x 13.1 "
(34.8 cm x 31.5cm x 33.3 cm)


Satin Black

Customer Reviews For Dynamo 800X

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King Clutch

  • Sunday, August 5, 2018

Phenomenal, stupendous, and astounding with super tight bass with the useful upgrades when compared to the older Dynamo subs!!! The apps work flawlessly and at this price point you cannot go wrong, plus it marries brilliantly with my Vision X. ARC setting via the app is spot on and I recommend using an iOS mic over an Android cell phone...etc. Don't forget to download the other ML app so you can use it for the subs settings. Bluetooth, and there's plenty of parameters to play with according to how you like the sub to sound, also change settings on the fly from your couch, lovely! These new X model subs are really a lot better than the Dynamo 700W I had, hands down.