Motion Foundation B1

About the Motion Foundation B1

The MartinLogan Motion Foundation B1 is a compact bookshelf speaker that delivers high-performance sound in a versatile size. It features MartinLogan's renowned thin-film tweeter technology paired with a custom Folded Motion Waveguide for consistent, detailed sound across the listening area. The speaker combines a Gen2 Obsidian Folded Motion Tweeter S with a 5.5" aluminum midbass driver to create an engaging listening experience from a compact footprint. The B1 is particularly well-suited for small spaces and works exceptionally well when paired with a subwoofer for enhanced bass response. It is threaded to work with MartinLogan's STAND25 for a stable stand-mount solution. The Foundation series redefines affordable hi-fi by incorporating many of MartinLogan's signature high-performance technologies at accessible prices, leveraging 40 years of design and engineering expertise.