Martin Logan Motion Foundation B1 Bookshelf Speakers

A New Standard in Affordable Performance

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” aluminium 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.

The MartinLogan Foundation Story

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 favourite content.

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 tweeter, 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.

Aluminium Midrange & Bass Drivers

Using trickle down technology from MartinLogan’s own Motion XT and Motion Series, the B1 uses the exceptional properties of Aluminium to maximise clarity, detail, and output from the midrange and bass drivers.

Modern Design Featuring Timeless Finishes

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

Specifications

Frequency Response 48 Hz - 23 kHz ± 3 dB

Tweeter Dispersion (Horizontal x Vertical) 90° x 90°

Recommended Amplifier Power 15 - 100 watts

Sensitivity 89 dB

Impedance 5 ohms

High Frequency Driver 0.94” x 1” (2.4 x 2.5 cm) Gen2 Folded Motion® Tweeter S with 3.5 in2 (22.6 cm2) diaphragm.

Mid-Frequency Driver 5.5” (14 cm) aluminium cone with cast aluminium basket. Non-resonant sealed chamber format. Unibody cone construction.

Crossover Frequency 3,400 Hz (2-way)

Cabinet Rear ported

Binding Post Inputs 5-way binding posts (non bi-wire)

Weight 11.5 lb (5.2 kg)

Dimensions (H x W x D with Feet) 13-11/16” x 7-1/4” x 9-1/2” (34.6 cm x 18.4 cm x 24.05 cm)

Finish Black, Walnut, and Satin White