The Martin Logan Motion Foundation B1 Bookshelf Speaker in Black (Each) combines signature thin-film transducer speed with controlled acoustic directivity in an understated, stealthy cabinet. Engineered to bring reference-grade detail and expansive imaging to compact stereo systems and multichannel home theater installations, this 2-way standmount monitor pairs an advanced Gen2 Obsidian Folded Motion Tweeter S with an engineered Folded Motion Waveguide and a custom 5.5-inch aluminum cone midbass driver. Clad in an elegant Matte Black finish and integrated via a custom McCracken-Vojtko crossover, it produces pristine high-frequency articulation, transparent vocal reproduction, and disciplined bass response down to 48 Hz.
Key Features & Innovations
Gen2 Obsidian Folded Motion® Tweeter S (FMT S) — the Martin Logan Motion Foundation B1 Bookshelf Speaker in Black (Each) uses an ultra-low-mass pleated diaphragm that compresses air with rapid transient agility, delivering effortless high-frequency extension past 23 kHz with vanishingly low distortion.
Folded Motion® Waveguide Dispersion Control — couples the FMT S high-frequency transducer to the listening environment, ensuring consistent, wide horizontal coverage while curtailing early boundary reflections from floors, ceilings, and side walls.
5.5-Inch High-Output Aluminum Midbass Driver — stiff, lightweight aluminum cone construction ensures high power handling and pistonic excursion, providing tight, articulate bass down to 48 Hz with natural midrange clarity.
Proprietary McCracken-Vojtko Crossover Topology — precision-engineered crossover network voiced through comprehensive anechoic analysis and double-blind listening evaluations to maintain flawless driver integration and phase coherence.
Rear-Firing Tuned Reflex Port & Anti-Resonant Cabinet — robust MDF cabinet structure suppresses internal standing waves and enclosure resonance, while the low-turbulence rear-firing port optimizes airflow for clean low-frequency output.
FAQ — Motion Foundation B1 Black
Is the Martin Logan Motion Foundation B1 Bookshelf Speaker in Black (Each) sold as an individual unit or a pair?
The Martin Logan Motion Foundation B1 Bookshelf Speaker in Black (Each) is priced and packaged individually (as a single unit), offering total flexibility when ordering an exact stereo pair or configuring odd-numbered surround channels.
What amplifier power is recommended for the Foundation B1?
MartinLogan recommends pairing the speaker with clean stereo receivers, integrated amplifiers, or AV receivers rated between 40 and 100 Watts continuous output per channel into 4 or 8 Ohms.
Can this speaker be mounted on stands or placed on a bookshelf?
Yes, its compact form factor fits conveniently on bookshelves, credenzas, or dedicated mass-loaded speaker stands, with included adhesive rubber feet to provide vibration isolation and surface protection.
What kind of speaker cable terminations does it accept?
The rear terminal cup features premium 5-way binding posts capable of accepting standard banana plugs, spade connectors, pin connectors, or bare speaker wire.
Why Buy From Us
Authorized MartinLogan dealer offering 100% genuine factory-authentic products with full manufacturer warranty protection
Experienced hi-fi specialists available to guide amplifier pairing, room acoustics, and surround system layout
Dedicated post-purchase customer support for speaker positioning and crossover tuning
Fast, secure priority shipping with reinforced protective packaging on every order
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