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Customer Ratings & Reviews

Your price for this item is $899.99

Customer reviews

Rating 4.8 out of 5 stars with 135 reviews

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  • Value

    Rating 4.5 out of 5 stars

  • Quality

    Rating 4.8 out of 5 stars

  • Ease of Use

    Rating 4.7 out of 5 stars

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96%would recommend to a friend

Customers are saying

Customers appreciate the Dynamo 800X subwoofer's exceptional sound quality and strong bass response, frequently praising its clean and powerful output. Many also highlight the subwoofer's surprisingly compact size and relatively easy setup, along with the convenient wireless capabilities and user-friendly app for adjustments. The ease of use and powerful performance are also frequently cited as positive aspects.

This summary was generated by AI based on customer reviews.

The vast majority of our reviews come from verified purchases. Reviews from customers may include My Best Buy members, employees, and Tech Insider Network members (as tagged). Select reviewers may receive discounted products, promotional considerations or entries into drawings for honest, helpful reviews.
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Page 1 Showing 1-19 of 19 reviews
  • Pros mentioned:
    Bass, Size

    Rated 5 out of 5 stars

    Dont sleep on this sub. Its very good !

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    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    This sub really surprised me. When I went to shop for subs, I was mainly looking at SVS. Martin Logan never crossed my mind for subs. I was replacing an almost 20 year old B&W that could dig deep. The salesperson was reallly helpful as we demoed this, SVS and REL. Big thing for me was app control. I liked the size of this unit along with the ability to dial in with the Anthem Room Correction app. This made a huge difference in the smoothness and tight punch I was looking for. Does it go the deepest? No, but for its size it hits pretty hard wothout being too obtrusive. I wouldnt hesitate to purchase again.

    I would recommend this to a friend
  • Pros mentioned:
    Bass, Setup, Sound quality

    Rated 4 out of 5 stars

    good looking good sounding sub

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    Posted . Owned for 3 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    I have had this sub for a month now and it has made a difference to the over all sound of movies and some TV shows. Explosions rumble the floor and furniture in action films and bass is plentiful overall. Bought this unit primarily because it works with Anthem Audio's ARC software and as I have an Anthem receiver thought it would be a good fit. Set up was simple, as close to plug and play as you can get. The ARC software picked it up right away. You can also run it without using ARC and there is an app that lets you make adjustments on the fly. Most subs are not much to look at but this unit in gloss piano black is an exception but it does attract dust so beware. At 300 watts it is powerful enough for my small living room. Happy with the purchase especially since it was on sale.

    I would recommend this to a friend
  • Pros mentioned:
    Bass, Size, Sound quality

    Rated 5 out of 5 stars

    Great subwoofer for small room

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    Posted . Owned for 1 week when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    This subwoofer was setup with my MartinLogan Motion 35XT speakers for music only. After finding the right location, it sounds great - it fills in the bass that my bookshelf speakers lack, but is essentially invisible to the ear. ARC setup worked great, then I tweaked the volume, crossover, and phase. Well built, compact. Tight bass sound.

    I would recommend this to a friend
  • Pros mentioned:
    Bass, Size, Sound quality

    Rated 5 out of 5 stars

    Worth It

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    Posted . Owned for 2 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Outstanding sound! Glad I went with the larger 800 for my room 700 sq ft theatre room. I paired it with the SLMs for mains and SLMXL for center. Those speakers sounded great except the bass and this sub fixed that and then some. The automated tool to set up the sub worked marvelously.

    I would recommend this to a friend
  • Pros mentioned:
    Bass

    Rated 5 out of 5 stars

    Great Sub for the money - App is great for setup

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    Posted . Owned for 2 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    For the price range, it is outstanding. The app works great and it really does improve the sound. The sub is versatile - you can have it forward or downward firing. The bass is tight and not boomy... works well for music and movies. The only knock on it is that it drops off quite quickly around 20hz. If that matters to you, I would recommend spending a little more to get the next one or two steps up in the series.

    I would recommend this to a friend
  • Pros mentioned:
    Bass, Sound quality

    Rated 5 out of 5 stars

    Face melting bass

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    Posted . Owned for 2 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    This subwoofer is perfect for a large space and sounds great even over tile. I sampled songs and music and the bass is nice and clean. With the added benefit of controlling the volune from an app on the phone its perfect for houses that need to adjust volume based on occupants and sleeping status.

    I would recommend this to a friend
  • Pros mentioned:
    Bass, Sound quality

    Rated 5 out of 5 stars

    Best Speakers I've ever heard

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    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Works better than I expected. The bass is felt in the floor and the couch, awesome. My only thought is what I can do to keep the Subwoofer from moving around on the floor. First time I have heard of Martin Logan, but when I found out they were based in Lawrence, KS, I had to support the local business and give them a try. I spent over 6K for all 11 speakers, but am in awe of the sound quality and clarity I get from the whole 7.1.4 speaker system.

    I would recommend this to a friend
  • Pros mentioned:
    Bass

    Rated 5 out of 5 stars

    Mad Bass!

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    Posted . Owned for 3 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Mad power! Smooth bass that really enhances my MartinLogan Atmos system. Bought during a 25% off sale so price was more reasonable. Far exceeds my needs at this point. Always good to have a little more than needed for future growth I feel.

    I would recommend this to a friend
  • Pros mentioned:
    Bass, Sound quality

    Rated 5 out of 5 stars

    MartinLogan - Subwoofer

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    Posted . Owned for 8 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Sound quality excellent. I have to turn it down or the whole room shakes.

    I would recommend this to a friend
  • Pros mentioned:
    Bass

    Rated 5 out of 5 stars

    Big Punch for Media Room

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    Posted . Owned for 1.5 years when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Move this ML sub for my home theatre. Will buy another one soon for additional bass.

    I would recommend this to a friend
  • Pros mentioned:
    Bass

    Rated 5 out of 5 stars

    Great sound and looks!

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    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    This is an outstanding subwoofer with a deep and pulsating bass and a great look as well. I have it as part of a theater sound system in my lower level great room and it performs very well. This replaced a wireless MartinLogan subwoofer that did not consistently power up. I am very pleased with this component.

    I would recommend this to a friend
  • Pros mentioned:
    Bass

    Rated 5 out of 5 stars

    Sounds great

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    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Works advertised and sounds great. It will walk a little with heavy bass but doesn’t impact function

    I would recommend this to a friend
  • Pros mentioned:
    Bass

    Rated 5 out of 5 stars

    Added some bas punch to my Infinity speakers

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    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    My current set of Infinity speakers are great on the high end but a bit weak at the bottom. I finally got around to setting up a sub-woofer and it rounds things out nicely. Still in the recommended "break-in" period so I have tried to blow out the windows yet.

    I would recommend this to a friend
  • Pros mentioned:
    Bass

    Rated 5 out of 5 stars

    Works Very Well

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    Posted . Owned for 3 weeks when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    This is my 2nd MartinLogan Dynamo 800X. I bought it to supplement the 1st one so that the bass will be "felt" more evenly throughout the room. It is doing just that. I'm very satisfied with the product.

    I would recommend this to a friend
  • Pros mentioned:
    Bass

    Rated 5 out of 5 stars

    Nice sub

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    Posted . Owned for less than 1 week when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    This sub woofer sounds really great. It puts a out very clean deep bass. Adds a whole other layer to the sound.

    I would recommend this to a friend
  • Pros mentioned:
    Bass

    Rated 5 out of 5 stars

    Great strong bass

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    Posted . Owned for 3 months when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Love listening to music and watching shows. The bass rumbles nicely geek squad did a great job installing everything for me

    I would recommend this to a friend
  • Pros mentioned:
    Bass

    Rated 5 out of 5 stars

    Subwoofer

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    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    This gives the perfect amount of bass. Excellent for the living room.

    I would recommend this to a friend
  • Pros mentioned:
    Bass

    Rated 5 out of 5 stars

    Impressed so Far.

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    Posted .
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Wonderful bass feeling without being overpowering.

    I would recommend this to a friend
  • Pros mentioned:
    Bass

    Rated 5 out of 5 stars

    Subwoofer

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    Posted . Owned for 1 month when reviewed.
    This reviewer received promo considerations or sweepstakes entry for writing a review.

    Great bass characteristics that can be controlled by phone app

    I would recommend this to a friend