MartinLogan Dynamo 600X Subwoofer

Powerful Affordable Sub with Wireless Control and Wireless Room Correction

MartinLogan's Dynamo 600X features a 240-watt peak-power amplifier, 10-inch audiophile grade woofer, extensive input options, optional wireless connectivity, control via a Bluetooth app, and Anthem Room Correction (AR). Dramatic bass detail and attack, superb extension, and room-shaking output ensure a compelling music and home theater experience.

In his August 6, 2018 review for WiFi HiFi, David Susilo calls the Dynamo 600X "an affordable little sub with an enormous growl… Listening to the Casiopea Perfect Live II LaserDisc, it's clear to me that the sub is extremely tight. When a drum is whacked, this sound is accurately reproduced with the same tightness. Bass guitars are accurately reproduced. You can hear the distinction when the bassist goes between open and closed notes as well as how tight he is gripping the strings. The bass drum kicks in Conjunction and Tetsuo Sakurai's bass guitar slaps are so impressive. Now that is accurate!"

Left and Right Two-Channel Inputs with LFE

Dynamo 600X features left and right inputs via RCA line level as well as speaker level connections. The right input doubles as an LFE input for home theater applications.

MartinLogan Sub Control App

MartinLogan’s Subwoofer Control app for iOS and Android uses a Bluetooth connection to simplify setup and configuration of Dynamo 600X. 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.

Anthem Room Correction (ARC) Mobile App

In the lab, MartinLogan engineers strive for transparency. Outside the lab, there’s one wildcard its 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.

The Anthem Room Correction app for iOS and Android 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 utilizes a Bluetooth connection with a smartphone or USB connection with a PC to run Anthem Room Correction.

Optional SWT-X Wireless Input

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 includes 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.

Powerful, High-Excursion, Low-Turbulence, Inverted Surround Woofers

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.

Advanced Ultra-Efficient Switch Mode Power Supplies and Class-D Amplifiers

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.

Inverse Mathematical Equalization (IME) Filter

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.

Low-Turbulence Ports

When properly optimized and executed, ports are a convenient, cost-effective way to increase low-frequency output. Dynamo 400 and 600X feature tuned, long low-turbulence ports designed to provide superb low-end extension while minimizing port induced distortion.

Overview

• Low frequency transducer: 10" high-excursion, inverted surround, polypropylene cone in a stamped steel basket with extended throw driver assembly. Ported.
• 120-watt (240-watt peak) power amplifier
• Low-turbulence, ported design
• RCA and speaker level inputs
• Digital control system via smartphone app
• Anthem Room Correction (ARC) via smartphone app or PC
• SWT-X Wireless Receiver & Transmitter (sold separately)
• Feet: Rubber
• Finish: Satin Black

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

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

• 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 (ARCTM): On, Off Tone
• Sweep (20–120Hz): On, Off, Pause (Frequency)

• Line Level: Left, Right/LFE
• Speaker Level: Left and Right via banana jacks
• Inputs (Audio, Wireless): SWT-X Receiver & Transmitter (sold separately)
• Inputs (Other): Micro USB (for ARC/Firmware Update)

• Frequency Response: 27–200 Hz ±3 dB. Anechoic in LFE mode
• Amplifier: 120 Watts (240 peak)
• Impedance: RCA 8,300 Ohms; Speaker Level 2,000 Ohms (red to black)
• Power Draw: Typical 30W, Max 150W, Idle 4W, Standby 0.5W
• Dimensions (HxWxD), Down-Firing: 16.3" x 14.5 " x 14.9"
• Weight: 35.5 lbs.

"There’s no way to make a subwoofer that takes up no space in a room, but with the Dynamo 600X MartinLogan has done the next best thing: come up with one that’s easy to set up, easy to live with, sounds great, has multiple connections, and comes with two apps -- ARC Mobile and MartinLogan Subwoofer Control -- that make it easy to dial in and change parameters, all from the comfort of your listening seat. I was especially impressed by how well the Dynamo 600X’s sound blended with that of my minimonitors, while providing excellent bass depth and loudness. If you’re looking for a small subwoofer with great sound and no-fuss setup, I recommend the Dynamo 600X."

- Vince Hanada, SoundStage! Access, August 1, 2019

"Listening to the Casiopea Perfect Live II LaserDisc, it's clear to me that the sub is extremely tight. When a drum is whacked, this sound is accurately reproduced with the same tightness. Bass guitars are accurately reproduced. You can hear the distinction when the bassist goes between open and closed notes as well as how tight he is gripping the strings. The bass drum kicks in Conjunction and Tetsuo Sakurai's bass guitar slaps are so impressive. Now that is accurate!​"

- David Susilo, WiFi HiFi, August 2018

"This generation of Dynamo subwoofers is clearly a major leap over the previous generation in every respect; I know it will be years until the next generation, but I am already eagerly looking forward to where MartinLogan goes from here based on the terrific work that they have done on these subwoofers."

- James Larson, Audioholics, November 2018

"I tweaked the controls available on the back panel of the sub and got what I thought were the best sounding settings and listened to some music and then watched a few scenes from a handful of movies. Pretty good, I thought. Then I ran the ARC app and it got better ... much better."

- Scott Schumer, HomeTheaterReview.com, December 2018