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Estimated price (community-sourced)
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The MartinLogan Motion Foundation B2 is a high-performance bookshelf speaker that redefines affordability by incorporating MartinLogan's renowned thin-film transducer technology and Folded Motion Waveguide. It delivers unexpectedly detailed sound and scale with a 6.5-inch aluminum cone midbass driver for robust bass and clarity, paired with a Gen2 Obsidian Folded Motion Tweeter S (0.94” x 1”, 3.5 in² diaphragm) that provides effortless high-frequency performance and 90° x 90° dispersion. Designed as a 2-way system with a rear-ported cabinet, McCracken-Vojtko crossover at 3,800 Hz, and 5-way binding posts. Available in Black, Walnut, and Satin White finishes, it's compatible with STAND25 stands and ideal for stereo or surround systems, offering a gateway to true hi-fi sound.
Driver and acoustic performance characteristics
Driver configuration and enclosure design
Size, weight, and appearance
Specifications are community-contributed and may not be accurate or complete. Verify all details with the manufacturer before making purchasing decisions. Terms & Conditions
The closest alternatives on specs, description and the systems they turn up in, with the specs they share set side by side.
The Denton 80th Anniversary's impedance is 6Ω against the Motion Foundation B2's 5Ω, its sensitivity 86 dB against 90 dB, and its low-frequency extension 40 Hz against 42 Hz. Both share ways (2).
The AE100²'s impedance is 6Ω against the Motion Foundation B2's 5Ω, its sensitivity 87 dB against 90 dB, and its low-frequency extension 51 Hz against 42 Hz. Both share ways (2).
The Motion Foundation B1's sensitivity is 89 dB against the Motion Foundation B2's 90 dB. Both share impedance (5Ω), high-frequency extension (23 kHz), and ways (2).
The Diamond 225's sensitivity is 87 dB against the Motion Foundation B2's 90 dB and its impedance 8Ω against 5Ω. Both share woofer (6.5") and ways (2).
Bowers & Wilkins DM 602 S3
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