MartinLogan Foundation Series products redefine affordability by incorporating many of MartinLogan's renowned high-performance technologies at accessible prices. Leveraging 40 years of design and engineering prowess and offering MartinLogan’s renowned thin-film performance, Motion Foundation is a gateway into the world of true hi-fi sound. With a choice of 5 different models in 3 different finishes, Motion Foundation speakers are an ideal foundation for building a high performance Stereo or Surround sound system. Bringing high end performance to a wider audience, Motion Foundation offers incredible immersion for all your favorite content. Motion Foundation speakers feature the incredible performance of the Gen2 FMT S, bringing much of the same performance found in our/their larger siblings, in a more compact and affordable package. This high-performance tweeter is paired with a custom Folded Motion Waveguide offering consistent, smooth, and controlled sound across the listening space delivering incredible performance in every seat while also reducing some of the harmful effects of room acoustics. Rounding out the sound are specially designed aluminum woofers for both the midrange and bass drivers offering robust and detailed performance across the board. Motion Foundation models are available in 3 elegant finishes to compliment any decor: Black, Satin White, and Walnut.
Q: What is the size of the midrange driver?
A: The midrange driver is 6.5 inches.
Q: What is the weight and dimensions of the speaker?
A: The Motion Foundation B2 speaker weighs 15 pounds and measures 15.01 inches high, 7.75 inches wide, and 11.49 inches deep.
Q: What is the sensitivity of the speaker?
A: The sensitivity of the speaker is 90 decibels.
Q: What is the minimum frequency response of the speaker?
A: The minimum frequency response of the speaker is 42 hertz.
A: Larger woofer always makes more low end more available as long as the driver is capable. In this case it is. B2 has a very good balance from low to high end, especially in its price range. I've heard both extensively and myself went with the B2. The more range and headroom you give yourself the better.

MartinLogan Foundation Series products redefine affordability by incorporating many of MartinLogan's renowned high-performance technologies at accessible prices. Leveraging 40 years of design and engineering prowess and offering MartinLogan’s renowned thin-film performance, Motion Foundation is a gateway into the world of true hi-fi sound. With a choice of 5 different models in 3 different finishes, Motion Foundation speakers are an ideal foundation for building a high performance Stereo or Surround sound system. Bringing high end performance to a wider audience, Motion Foundation offers incredible immersion for all your favorite content. Motion Foundation speakers feature the incredible performance of the Gen2 FMT S, bringing much of the same performance found in our/their larger siblings, in a more compact and affordable package. This high-performance tweeter is paired with a custom Folded Motion Waveguide offering consistent, smooth, and controlled sound across the listening space delivering incredible performance in every seat while also reducing some of the harmful effects of room acoustics. Rounding out the sound are specially designed aluminum woofers for both the midrange and bass drivers offering robust and detailed performance across the board. Motion Foundation models are available in 3 elegant finishes to compliment any decor: Black, Satin White, and Walnut.

MartinLogan Foundation Series products redefine affordability by incorporating many of MartinLogan's renowned high-performance technologies at accessible prices. Leveraging 40 years of design and engineering prowess and offering MartinLogan’s renowned thin-film performance, Motion Foundation is a gateway into the world of true hi-fi sound. With a choice of 5 different models in 3 different finishes, Motion Foundation speakers are an ideal foundation for building a high performance Stereo or Surround sound system. Bringing high end performance to a wider audience, Motion Foundation offers incredible immersion for all your favorite content. Motion Foundation speakers feature the incredible performance of the Gen2 FMT S, bringing much of the same performance found in our/their larger siblings, in a more compact and affordable package. This high-performance tweeter is paired with a custom Folded Motion Waveguide offering consistent, smooth, and controlled sound across the listening space delivering incredible performance in every seat while also reducing some of the harmful effects of room acoustics. Rounding out the sound are specially designed aluminum woofers for both the midrange and bass drivers offering robust and detailed performance across the board. Motion Foundation models are available in 3 elegant finishes to compliment any decor: Black, Satin White, and Walnut.

The MartinLogan Motion Foundation B1 x WiiM Amp Bundle at its core is an easy to setup Stereo system, but with the latest streaming technologies it opens the door to so much more. Offering support for popular streaming technologies like AirPlay 2, Google Cast, Roon, Bluetooth and more, the Wiim Amp offers unprecedented flexibility to deliver your favorite music as hassle free as possible. With multi-room support and Spotify Connect, iHeartRadio, Tidal Connect, Amazon Music, Qobuz, Napster, Pandora, TuneIn, Deezer, and more, it has never been easier to bring your favorite music to life. WiiM Amp also features HDMI ARC, Digital Optical, and Stereo RCA inputs making it easy to plug in your own sources, including a TV, making it ideal for creating a Stereo Home Theater without hassle. All of this functionality is paired with the renowned performance of the MartinLogan Motion Foundation B1 speakers for a full, clear sound from all of your favorite content. Experience crystal clear dialogue and vocals as well as bass performance unexpected for their compact size. The subwoofer output of the WiiM Amp also makes it easy to add a subwoofer for even more dynamic, and visceral impact.

Set the mood in your home via music with these Klipsch speakers. The wood-grain vinyl exterior imparts a touch of sophisticated elegance to a room, while the Tractrix Horn technology provides clear, vibrant and rich musical tones. The titanium tweeter on these Klipsch speakers dampens high-frequencies to facilitate crisp, natural sound.
| Pros for MartinLogan - Motion Foundation B2 2-Way Bookshelf Speaker with 6.5” Midbass Driver (Each) - Walnut | |||
|---|---|---|---|
| There were no pros for this product— | Sound Quality, Size | Sound Quality | Sound Quality, Size, Bass, Price, Appearance |
Customers are satisfied with the Motion Foundation B2 bookshelf speakers' sound quality. Many appreciate the well-balanced audio, from high to low frequencies, and the detailed sound reproduction. Reviewers frequently highlighted the excellent mid-range and decent bass response. The speakers are described as sounding great overall.
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.
Great Speakers Great Sound Great Size Great Price Great Product
This review is from MartinLogan - Motion Foundation B2 2-Way Bookshelf Speaker with 6.5” Midbass Driver (Each) - Satin White
Posted by KumarS
The sound I was looking for. Crispy High and mid with heavy base.
This review is from MartinLogan - Motion Foundation B2 2-Way Bookshelf Speaker with 6.5” Midbass Driver (Each) - Black
Posted by SertzaiW
Excellent speakers. Very detailed, Great mid-range & decent bass. They are 5 OHM rated that dip into the 3's so you need a good AVR or amp with power to drive them.
This review is from MartinLogan - Motion Foundation B2 2-Way Bookshelf Speaker with 6.5” Midbass Driver (Each) - Black
Posted by ScottinFOCO