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MartinLogan Dynamo™ 500

Powered subwoofer, wireless adapter optional

11 Reviews | 1 question - 1 answer

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Item # 839DY500B

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Was: $499.99

Price break: -$200.00

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Our take on the MartinLogan Dynamo™ 500

Whether you're watching movies or listening to music in your home theater, don't shortchange yourself on the low end. Get plenty of deep bass with the powerful yet compact MartinLogan Dynamo 500. Its 10-inch front-firing driver and 120-watt amplifier will help fill in those low frequencies that even most tower speakers can't quite reproduce. Movie effects will have more impact and music will sound fuller and richer with this subwoofer on the job.

Hear the bass you've been missing

Whether you're watching movies or listening to music in your home theater, don't shortchange yourself on the low end. Get plenty of deep bass with the powerful yet compact MartinLogan Dynamo 500. Its 10-inch front-firing driver and 120-watt amplifier will help fill in those low frequencies that even most tower speakers can't quite reproduce. Movie effects will have more impact and music will sound fuller and richer with this subwoofer on the job.

MartinLogan Dynamo 500 powered subwoofer

The Dynamo 500 offers rear-panel volume control, phase switch, and crossover control with a bypass switch.

It's not just about more bass

As a preeminent speaker manufacturer, MartinLogan knows great bass is about more than just quantity. So they designed the Dynamo 500 to deliver excellent bass accuracy as well. Both the driver structure and the built-in amp are configured to minimize distortion and noise, so this sub's bass output is not only ample, but clean and tight as well. Two rear ports efficiently enhance the low-frequency output without introducing port-induced distortion. This ensures the Dynamo 500 is a great match for both movies and music, not to mention MartinLogan's impressive lineup of speakers.

Want to make the Dynamo 500 a wireless sub? Check out the MartinLogan SW2-TRD wireless kit.

Product Highlights:

  • frequency response: 29-200 Hz (±3dB)
  • built-in amplifier delivers 120 watts of continuous power, 360 watts peak output
  • continuously variable low-pass 50-200 Hz crossover
  • 10" polypropylene woofer cone
  • bass-reflex (ported) enclosure
  • dual low-turbulence ports for maximized bass output with minimal port induced distortion
  • rear-mounted phase switch, volume level, and crossover controls
  • auto on/off
  • line-level/LFE RCA input
  • black ash finish
  • 13-1/16"W x 14-3/4"H x 15-13/16"D
  • weight: 28.5 lbs.
  • warranty: 3 years (with product registration)
  • Our 60-day money-back guarantee

What's in the Box:

  • Powered subwoofer
  • Cloth grille
  • 10' AC power cord
  • User's Manual (En/Fr)
  • Product Registration Card

Fit in seamlessly with the Martin Logan Motion 40. Would have liked it in rose wood.

Mike, Coos Bay, OR


MartinLogan Dynamo™ 500 Reviews

Average Customer Review(s):

(11 Reviews)

Sounds good but short life

Guest from Ocala, FL on 11/24/2018

I have 2 Dynamo 500s. The good news is they sound really good. Good punch and deep bass for the size. Bad news is 2 years in, the first one the amp started humming loudly and would not stop. It was replaced under warranty. Just out of warranty, the second one started flickering back and forth before going to sleep mode. Then every now and then, the sub would pop loudly even when it is in sleep mode. So now I have to physically turn the sub off when it is not in use.



First Choice in Subwoofers

Roger from Wesley Chapel, FL on 10/17/2018

Crutchfield Customer Review (What's this?)

This is my 2nd Martin Logan subwoofer. My first Martin Logan subwoofer is as high end as they sell, and it is off the charts incredible. So, when I bought the Dynamo 500, I expected a solid, good subwoofer. It is a great sounding subwoofer, and it has even more power than I expected. Martin Logan is my first choice for subwoofers.

Pros: More Power than I thought great sound Affordable price


Great Style But sound is suspect.

Leon from Ocala, FL on 10/15/2018

Crutchfield Customer Review (What's this?)

I like the styling and the ease of set up. The price and the fact it is a Martin Logan Dynamo sub made me what it. Been looking at Martin Logan subs for quite a while now. Was waiting on my previous sub 10" to die. Got the Dynamo 500 it is a little underwhelming on the bass (don't know why). I have a 5.1 audio wired speaking surround set up so expected the Dynamo 500 to outperform my previous down firing 10" which was a little boomy when turned up. Can't figure out why the Dynamo 500 is underwhelming for my set up but I love the style and hope maybe it needs a break-in period.

Pros: Styling and connections.

Cons: Manual not so good and sound is underwhelming may need to break-in for bass to be great (I hope)

Great lows and room filling base

Crutchfield customer from Grand Forks, ND on 8/21/2018

Crutchfield Customer Review (What's this?)

Great price point for value and quality of product. Well made.



MartinLogan Dynamo™ 500

Mike from Coos Bay, OR on 7/19/2018

Crutchfield Customer Review (What's this?)

Fit in seamlessly with the Martin Logan Motion 40. Would have liked it in rose wood.

Pros: A good firm bass with the power need to sound great with music

Cons: Constuction could be better.

"All about the bass"

Jerry from Hvre De Grace, MD on 5/30/2018

Crutchfield Customer Review (What's this?)

I'm very satisfied with the Martin Logan Dynamo 500 . I have my home theater set up in my family room , dimensions are roughly 18' x 20' with 17' cathedral ceilings . The bass is punchy and full thru out the room . I would have no problem highly recommending this subwoofer to a friend and for the price you can't beat it . lastly I have have to thank Crutchfield for they're costumer service and fast delivery .

Pros: Great sound . Great price .

Cons: None , at this time .

Great low cost sub for music and movies

Brent from Davenport, IA on 12/10/2016

Crutchfield Customer Review (What's this?)

Great Sub for the money! Typical Martin Logan musicality; easy to set up and place. In this price range, it's hard to go wrong. Fills out the bottom octave of the Motion 40's quite nicely.

Pros: Not much other real competition at this price.

Cons: Finish shows the cost cutting; would be nice to have a piano finish or black cherrywood option to match the Motion Series.

It sound nice

INTAE from New Milford, CT on 1/19/2016

Crutchfield Customer Review (What's this?)

I checked this unit with Yamaha A S-1000 amplifier by connecting to the pre-amp out without connecting any other speakers. Sounded all right. Then, I tried how the crossover between this unit with a pair of MartinLogan Motion 40 main speakers by setting the low-pass filter a halfway (50-120 Hz adjustable). Since Motion 40 curtails at 50 Hz, I believe it makes seamless and sounded so. (I am not a sound expert and my low frequency listening limit is somewhere 40 Hz). However, the front cover finish and construction is cheap for the price tag. I also like to see the same finishes and colors as Motion series speakers. Automatic power on/off response is slow too.

Pros: Crossover performance and adjustable feature for variety of main speakers

Cons: Cheap front construction and poor packing. MartinLogan in general- they need better protection of expensive and delicate equipment against rough handing.

Quality powered subwoofer

MartinLogan Dynamo 500 from California on 8/10/2015

Crutchfield Customer Review (What's this?)

Quality built throughout. One of the best sub woofers on the market today, great value. Crutchfield service never disappoints!



Wounderfull Sub

shager42 from Colorado on 7/28/2015

I replace my old Dev tech 12 sub that went out on me with this new Dynamo 500, I actually was looking at SVS but could not get my self to shell out that kind of cash. I originally bought Two of these subs thinking that where was no way this sub could produce the levels of base I was looking for. "Boy was I wrong " i hooked up the Dynamo and put on some Imagine Dragons and cranked it up I could feel the base produced from this sub just standing in the room. Not only dose it produce hart pounding base, it is also musically accurate! not muddy or boomy like some of the other subs i have heard like the klipsh. Bottom line I only need one, and returned the other back to the store.

Pros: Great sound and output.

Cons: Wish it was wireless :)

Love this sub....

Stephanie from St Petersburg, FL on 2/18/2015

Crutchfield Customer Review (What's this?)

I just moved into a ranch home with a very open floor plan. I wanted a compact system that would sound great, and that I would be able to enjoy from anywhere in the house. Especially since I'm sparse in my taste in furniture, this plus the matching bookshelf speakers is a perfect solution. Amazing sound in my living room, and good sound filtering through the rest of the house. The sub makes all the difference.




Hands-on research

Features and Specs

Enclosure Bass Reflex
Video Shielded No
Woofer Size (inches) 10
Woofer Composition Polypropylene
Firing Direction Front
Wireless Optional
Preamp-Level Inputs Yes
Speaker-Level Inputs No
Speaker-Level Outputs No
Low-Pass Crossover Freq 50-200
High-Pass Crossover Freq N/A
Phase Switch Yes
Amplifier Output (watts) 120
Frequency Response 29-200 Hz
Height (inches) 14-3/4
Width (inches) 13-1/16
Depth (inches) 15-13/16
Weight 28.5 lbs
Speaker Parts Warranty 3 Yrs w/ Registration
Speaker Labor Warranty 3 Yrs w/ Registration
Amplifier Parts Warranty 3 Yrs w/ Registration
Amplifier Labor Warranty 3 Yrs. w/ Registration

Product Research


Dynamo Series Powered Subwoofer: Perfect for either home theater or stereo applications, the MartinLogan Dynamo 500 powered subwoofer is solidly built with high-density materials to minimize cabinet resonance and provide a foundation for the high-output 10" woofer and high-current 120-watt RMS (360-watt peak) amplifier. Additionally, dual rear-mounted low-turbulence ports maximize bass output while minimizing port induced distortion.

120-Watt RMS (360-Watt Peak) Amplifier: The MartinLogan Dynamo 500's amplifier belongs to a recently-developed class of switch-mode designs that incorporate a variety of innovative techniques to reduce noise, distortion, and heat to the lowest possible levels. In particular, the switching frequency is much higher than in typical subwoofer amplifiers of this type, providing a tremendous true 120-watts continuously (360-watts peak) with extremely low distortion.

Low-Distortion 10" Woofer: The Dynamo 500's high-resolution front-firing driver combines a 10" polypropylene cone with a high-intensity magnet structure to achieve huge excursion and output capability without sacrificing detail. By eliminating cone flexure, even at long voice-coil excursions, the Dynamo 500's advanced-technology bass driver achieves the very low distortion necessary for proper blending with MartinLogan's Folded Motion and electrostatic speakers.

High-Density Cabinet Construction: The powered subwoofer's cabinet is constructed from the finest composite material for acoustical integrity and is finished with an attractive wood-grain vinyl coating.

Dual Low-Turbulence Ports: Ports are a convenient and cost-effective way of increasing low-frequency output. The Dynamo 500's dual low-turbulence ports are carefully designed to provide superb low-end efficiency while minimizing port induced distortion.

Seamless System Integration: Comprehensive connection options, low-pass filtering, and phase control make integrating the Dynamo 500 subwoofer into a multichannel home theater or stereo music setup simple and seamless. The main left/right line-level inputs feed into a precision low-pass filter with a cut-off frequency variable from 50 to 200 Hz. For systems in which the AV receiver supplies the low-pass crossover, the Dynamo 500 offers an LFE input that bypasses its internal filters. The phase control can be set to 0- or 180-degrees.

Auto Power On/Off: The powered subwoofer will automatically enter a power saving mode when no audio signal is detected. The subwoofer will automatically come out of power saving mode when an audio signal is detected.

Break-In Period: The Dynamo 500 woofer requires approximately 50 hours of break-in at moderate listening levels before its optimal performance occurs. This will factor in on any critical listening and judgment.

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team. They verify what’s in the box, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.

Q & A

Customer Q&A

Crutchfield asked  
Why did you buy this?

Already own this and it is amazing [ Tyler  Nov 29, 2018 ]
Because of Andy's, Crutchfield sales representative's recommendation. [ JOHNNY  Nov 27, 2018 ]
to match my MartinLogan speakers [ ANDREI  May 13, 2018 ]
I listened to it at a local audio dealer and was impressed. I also wanted it to match my Martin Logan Motion Series speakers. [ John  Dec 28, 2017 ]
Highly recommended [ Sandra  Dec 04, 2017 ]
Recommendations from the wonderful Crutchfiled Advisors [ Kyle  Nov 10, 2017 ]
Listen to it and it sounded great. [ Keith  Dec 27, 2015 ]

1 question already asked

If you purchased the product from Crutchfield, feel free to contact our Tech Support team. They can walk you through the settings on the product and see if there may be a fix. Our toll-free Tech Support number is printed on your invoice, and is also available under the "My Orders" tab in the "My Account" section of our website. If you did not purchase the unit from Crutchfield, then you may want to contact the manufacturer. You can also post your question in our forums: Or try our online support center: [ Krissy  Feb 17, 2016 ]  Staff

Looking for more? Check out the next model in this lineup.

MartinLogan Dynamo 700W

MartinLogan Dynamo™ 700W


In Stock

$399.99 After $300.00 Special purchase

Add to Cart

Get more setup flexibility and more power

The MartinLogan Dynamo™ 700W offers these features:

wireless connectivity with the built-in wireless receiver and included transmitter

easily converts from front-firing to down-firing configuration

built-in amplifier delivers 300 watts of continuous power, 600 watts peak output