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.

Minimalistic Design Featuring Luxurious Real-Wood

Motion 50XT combine high-excursion, black aluminum cone woofers and low-turbulence, rear-firing bass ports, and features 6.5-inch woofers for deeper bass extension, paired with our larger Folded Motion XT tweeter. Each model creates clear, highly dynamic, and precise sound. Premium, five-way binding posts assure a solid connection.

Folded Motion® XT  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.

The low distortion Folded Motion XT tweeter boasts a radiating surface 40% larger than those found in the award-winning Motion® Series products. This substantial leap in size increases the bandwidth and efficiency of the high-performance tweeter for effortless performance.

Specifications

Specifications are subject to change without notice

Frequency Response 50–25,000 Hz ±3dB

Recommended Amplifier Power 20—300 watts per channel

Horizontal Dispersion 80°

Vertical Dispersion 30°

Sensitivity 94 dB/2.83 volts/meter

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

Crossover Frequency 900 & 2,200 Hz

High Frequency Transducer 1.25" × 2.4" (3.2cm × 6.1cm) Folded Motion XT Transducer with 4.5" x 2.75" (11.4cm × 7cm) diaphragm

Low Frequency Transducer Two 6.5" (16.5cm) aluminum cone with cast poly- mer 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. Polyester film capacitors in series and low DF electrolytic capacitors in parallel. Tweeter thermal/current protection.

Inputs Custom 5-way bi-wire tool-less binding posts

Weight 30.5 lbs. (13.8 kg)

Dimensions 7.6" x 22.8" x 12.8 "

(19.2cm x 58cm x 32.6cm)