£945

Motion 15i

Bookshelf speaker featuring a Folded Motion® tweeter and 5.25-inch aluminum cone woofer with a rear-firing bass port. Available in three stylish finishes: gloss black, matte white, and red walnut.

Motion 15i Bookshelf Speakers

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. Available in three stylish finishes: gloss black, matte white, and red walnut.

Engineering, Without Compromises

What makes the Motion Series sound so amazing? MartinLogan's dedicated in-house engineering and design team started by utilizing and refining the most advanced, compact technologies and combining them with innovative engineering and time-honored cabinet construction techniques. The result is an emotionally engaging sound that rivals (and most times trounces) traditional loudspeakers of similar size and price. Our 'no compromise' philosophy gives Motion Series a unique sound you won't find anywhere else.

Sound Inspired by Electrostatic Speakers

The success of the Motion Series is directly attributed to its close relation to MartinLogan’s legendary ultra-high-end electrostatic loudspeakers. The desire to transmute that level of performance into a more traditional loudspeaker at a more affordable price drove the initial design imperatives that created the Motion Series.

Specifications

Frequency Response60–25,000 Hz ±3dB
Recommended Amplifier Power20—200 watts per channel
Horizontal Dispersion80°
Vertical Dispersion80°
Sensitivity92 dB/2.83 volts/meter
Impedance5 Ohms Compatible with 4, 6, or 8 Ohm rated amplifiers.
Crossover Frequency2,700 Hz
High Frequency Transducer1" × 1.4" (2.6cm × 3.6cm) Folded Motion Transducer with 5.25" × 1.75" (13.3cm × 4.4cm) diaphragm
Low Frequency Transducer5.25” (13.3cm) aluminum cone with cast basket. Non-resonant asymmetrical chamber format. Rigid structured dust cap to reduce cone break-up modes.
ComponentsCustom 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.
InputsCustom 5-way tool-less binding posts
Weight12 lbs. (5.4 kg)
Dimensions11.4" x 6.8" x 9.5 " (29cm x 17.3cm x 24cm)