Engineering Genius

What makes the Motion Series sound so amazing? MartinLogan's dedicated in-house engineering team started by utilizing and refining the most advanced, compact technologies and combining them with innovative engineering. The result is an emotionally engaging sound that rivals (and most times trounces) traditional loudspeakers of similar size and price.

Folded Motion® Tweeters

The signature Folded Motion tweeters utilize extremely low mass diaphragms that "squeeze" air, and require significantly less excursion than the typical 1-inch dome tweeter, which drastically minimizes distortion while providing a lightning fast response time. The increased surface area also provides a wide, yet controlled sound dispersion to create a realistic and carefully etched sound stage.

High-Gloss Finishes

Motion 15 is available in three luxurious high-gloss finishes; Piano Black, White or Black Cherrywood. The high-gloss black cherrywood finish has deep cherry undertones and appears almost black in low light, giving them a unique and understated elegance that blends into any environment.

Specifications

Specifications are subject to change without notice

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" × 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

Weight 12 lbs. (5.4 kg)

Dimensions 11.4" x 6.8" x 9.5 "

(29cm x 17.3cm x 24cm)