Motion Foundation B2

The MartinLogan Motion Foundation B2 is the largest bookshelf speaker in the Motion Foundation Series, engineered to deliver the scale, dynamics, and bass performance of a much larger loudspeaker while maintaining the versatility of a stand-mount design. Featuring a 6.5-inch aluminum mid-bass driver and the advanced Gen2 Obsidian Folded Motion® Tweeter S, the B2 produces a rich, detailed soundstage with exceptional clarity, making it an outstanding choice for both high-fidelity music listening and immersive home theater systems.

The Gen2 Folded Motion® Tweeter works in conjunction with MartinLogan's Folded Motion® Waveguide to provide controlled 90° × 90° dispersion, delivering consistent performance across a wide listening area while minimizing unwanted room reflections. Combined with the proprietary McCracken-Vojtko crossover, the B2 achieves seamless integration between the tweeter and aluminum driver, resulting in precise imaging, natural vocal reproduction, and remarkable detail throughout the frequency range.

Its larger 6.5-inch aluminum cone driver extends bass response down to 42 Hz, providing greater low-frequency authority and dynamic impact than smaller bookshelf speakers. The carefully tuned rear-ported cabinet enhances bass performance while maintaining tight control and low distortion, making the B2 equally capable as a standalone stereo speaker or as the main left and right channels in a surround sound system. Compatible with MartinLogan's STAND25 speaker stands, it offers an elegant and acoustically optimized installation.

Whether placed on bookshelves, dedicated speaker stands, or integrated into a premium home theater, the Motion Foundation B2 delivers the signature MartinLogan combination of transparency, controlled dispersion, and dynamic realism. Its refined engineering, premium finishes, and impressive full-range performance make it an exceptional value for listeners seeking audiophile-quality sound in a compact form factor.