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B1 High-Performance Folded Motion® Bookshelf Speaker


Small in size but not sound, the most compact Motion Foundation model offers unheard of performance from such a versatile size.


The Gen2 Obsidian Folded Motion Tweeter S, Folded Motion Waveguide, and 5.5” aluminum midbass driver work together here to create a completely unexpected and engaging experience from a compact footprint. Foundation B1 is ideal for small spaces, especially when combined with a subwoofer, to create a highly musical, detailed experience wherever high quality sound is desired. Foundation B1 is also threaded to work with our STAND25 to create a stable stand mount solution.





Legendary MartinLogan Sound

MartinLogan speakers are known for their exceptional articulation, detail and realism, regardless of the listening environment. By using advanced thin-film technologies and Controlled Dispersion, MartinLogan delivers a unique and unparalleled listening experience that is not commonly found in other speakers.



Gen2 Obsidian Folded Motion Tweeter S

The Gen2 FMT S offers effortless performance, unmatched by conventional technologies. By folding thin film material, MartinLogan is able to pack more surface area into a small space.   Large surface area, light weight and low excursion means an incredibly fast and responsive tweeter capable of reproducing the most nuanced content with stunning detail and clarity.



Folded Motion Waveguide

Enhances the Controlled Dispersion of the Gen2 Folded Motion Tweeter S, blanketing the listening area with incredible detail and precision. Avoids performance robbing room reflections and provides a more consistent sound across a wider seating area.



McCracken-Vojtko Crossovers

The culmination of combining extensive anechoic, in-room measurements, and multiple blind listening tests with the low distortion philosophy of MartinLogan's signature Vojtko Crossover. Through this process each speaker was refined to achieve the best performance.



Controlled Dispersion

Room acoustics are vital, as everything in the listening room has an impact on speaker performance. MartinLogan minimizes these harmful effects by focusing the sound into the listening area, increasing flexibility, clarity, and placement options, regardless of the room's design.



Aluminum Mid-Bass Driver

Using trickle down technology from MartinLogan's own Motion XT and Motion Series, the Motion Foundation Series uses Aluminum cone woofers to maximize clarity, detail, and output.



Secure-Lock Grilles

Stealth mounting tabs securely hold the grilles in place allowing the listener to customize the appearance of each speaker. Creating a unique look; leaving the grilles on, off, or even rotating them to change the grain of the fabric providing maximum aesthetic control.



Modern Design Featuring Timeless Finishes

Motion® Foundation® models are available in 3 timeless finishes to compliment any decor: Satin White with Silver trim, Walnut with Bronze trim, or Black with Gunmetal trim.

Martin Logan Motion Foundation B1 Bookshelf Speakers - Pairs

C$799.98 Regular Price
C$679.98Sale Price

    Frequency Response: 48 Hz - 23kHz ± 3 dB


    Folded Motion® Waveguide Enhanced TweeterDispersion (VxH): 

              90° (vertical) x 90° (horizontal) 


    Sensitivity (2.83 volts / meter): 89 dB


    Impedance: 5 Ohms Compatible with 4, 6, or 8 Ohm rated amplifiers  


    Crossover Frequency: 3,400 Hz (2-way) 


    High Frequency Driver:  1" (vertical) × 0.94" (horizontal) Gen2 Folded Motion ® Tweeter S.


    Mid Frequency Driver:  5.5" aluminum cone with cast aluminum basket. Nonresonant sealed chamber format. Unibody cone construction.


    Cabinet:  Rear Ported 


    Recommended Amplifier Power: 15 - 100 watts  


    Binding Post Inputs: 5-way Binding Posts (Non Bi-Wire)


    Dimension* : 13.64"H x 7.25"W x 9.47"D


    Weight : 11.5 Lbs. 


    Finishes : Black, Walnut and Satin White



    * Product dimensions include feet, binding posts, and grilles.




    Specifications are subject to change without notice.

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