Martin Logan Motion Foundation B1
Martin Logan Motion Foundation B1 Bookshelf Speaker
- Gen2 Obsidian Folded Motion® tweeter with a waveguide delivers ultra-fast, low-distortion highs and expansive 90°×90° dispersion
- 5.5″ aluminum mid-bass driver sourced from Motion XT series ensures detailed, punchy midrange and solid low-end
- Folded Motion waveguide enhances controlled dispersion for consistent sound across the listening area
- Ported cabinet design (rear-ported MDF enclosure) allows a compact size yet delivers bass down to 48 Hz
- McCracken–Vojtko crossover network ensures smooth integration between tweeter and woofer
- Controlled dispersion design minimizes early reflections and maximizes clarity in varied room setups
- Compact & versatile form factor: 13.6″ H × 7.25″ W × 9.5″ D; threaded pole-mount friendly (e.g., STAND25)
48 Hz - 23 kHz ± 3 dB
90° x 90°
15 - 100 watts
89 dB
5 ohms
0.94” x 1” (2.4 x 2.5cm) Gen2 Folded Motion® Tweeter S with 3.5 in2 (22.6 cm2) diaphragm.
3,400 Hz (2-way)
5.5” (14cm) aluminum cone with cast aluminum basket. Non-resonant sealed chamber format. Unibody cone construction.
Rear Ported
5-way Binding Posts (Non Bi-Wire)
11.5lbs / 5.2kg
13-11/16” x 7-1/4” x 9-1/2”
34.6cm x 18.4cm x 24.05cm
Black, Walnut, and Satin White
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.
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.
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.
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.
Aluminum Mid-Bass Driver
Using trickle down technology from MartinLogan’s own Motion XT and Motion Series, the B1 uses the exceptional properties of Aluminum to maximize clarity, detail, and output from the mid-bass driver.
Aluminum Mid-Bass Driver
Using trickle down technology from MartinLogan’s own Motion XT and Motion Series, the B1 uses the exceptional properties of Aluminum to maximize clarity, detail, and output from the mid-bass driver.
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.
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.
