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The high-performance Motion 15i bookshelf speaker features a Folded Motion® tweeter, a 5.25-inch aluminum cone woofer with a rear-firing bass port, and a proprietary Vojtko crossover network to deliver refined sound with stunning dynamic range and jaw-dropping clarity. Motion 15i delivers the classic broad soundstage of the Motion Series from a newly designed enclosure enhanced by the slightest of modifications, including the drive-stabilizing dust cap design and stiffened motor suspension. The speaker’s cabinet sports a reinforced baffle and a fabric grille.   



MartinLogan's premier Motion Series speakers are available in three luxurious finishes and matching metallic trim - gloss black with black grilles and gunmetal grey trim, matte white with silver grilles and silver trim, and red walnut with black grilles and champagne colored trim.

Martin Logan Motion 15i Bookshelf Speakers - Pair

  • Frequency Response: 60-25,000 Hz ±3dB 


    Recommended Amplifier Power: 20-200 watts per channel 


    Horizontal Dispersion: 80° 


    Vertical Dispersion: 80°  


    Sensitivity: 92 dB/2.83 volts/ meter 


    Impedance: 5 Ohms. Compatible with 4, 6, or 8 Ohm rated amplifiers  


    Crossover Frequency: 2,700 Hz  


    High Frequency Transducer:  1" × 1.4" (2.6cm × 3.6cm) Folded Motion Transducer with 5.25" x 1.75" (13.3cm × 4.4cm) diaphragm.


    Low Frequency Transducer:   5.25" (13.3cm) aluminum cone with cast basket.  Non-resonant asymmetrical chamber format. Rigid structured dust cap to reduce cone break-up modes.


    Components:  Custom air core coil and low DCR steel laminate inductors. Polypropylene film capacitors in series and low DF electrolytic capacitors in parallel.  Overall system thermal/current protection.


    Inputs: Custom 5-way tool-less binding posts  


    Dimension: 11.4" x 6.8" x 9.5"


    Weight: 12 Lbs. 


    Finish: Matte White.



    Specifications are subject to change without notice

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