Gen2 Obsidian Folded
Motion® Tweeter S

Our signature Folded Motion® Tweeter technology utilizes an extremely low-mass diaphragm that "squeezes" air, thus requiring significantly less excursion than a typical 1-inch dome tweeter. Folding the lightweight film into an accordion-like structure increases the playable surface area while keeping the tweeter size relatively compact. With several times greater surface area than typical tweeters, and an extremely lightweight film, this highly efficient combination provides incredible detail and clarity with virtually zero distortion. 

For the Motion® Foundation series we designed our most compact high performance thin film tweeter to date, packing much of the performance found in our Motion® XT, and Motion® series products in a more affordable package. Motion® Foundation redefines what to expect from affordable Hi-Fi speakers, providing an incredible experience that must be heard to believe.

Folded Motion® Waveguide
To further enhance the output and consistency of our latest, and most compact, Gen2 Obsidian Folded Motion® Tweeter S, MartinLogan engineers added the all new Folded Motion® Waveguide to the mix. This waveguide works in tandem with the natural Controlled Dispersion properties of our FMT S to improve the sound consistency across the board, ensuring that every seat gets maximum clarity, especially critical for things like dialogue and vocals.
 The secondary benefit of the Folded Motion® Waveguide is an increase in the Controlled Dispersion coverage area, enhancing the natural output of the tweeter by 10° in all directions for a generous 90° x 90° pattern. This increase still provides all the benefits of Controlled Dispersion but with a slight increase to the coverage area to help better cope with today’s modern listening spaces, giving you more freedom of placement while still providing the sound quality benefits of controlled dispersion.

McCracken-Vojtko Crossovers
The culmination of combining extensive anechoic, in-room measurements, and multiple blind listening tests with the low distortion philosophy of MartinLogan’s signature Vojtko Crossover. Through this process each speaker was refined to achieve the best performance

F2
Application
Floorstanding
Frequency Response
36 Hz - 23kHz
Tweeter Dispersion
90° (vertical) x 90° (horizontal)
Sensitivity
92 dB
Impedance
4 ohms
Crossover Frequency
330 Hz, 3600 Hz
High Frequency Driver
1" (vertical) x 0.94" (horizontal)
Mid Frequency Driver
5.5" (14cm) aluminum cones with
cast aluminum baskets. Non-resonant
asymmetrical chamber format.
Unibody cone construction.
Low Frequency Drivers
3x 6.5" (16.5cm) aluminum cones with
cast aluminum baskets. Non-resonant
asymmetrical chamber format.
Unibody cone construction.
Cabinet
Rear Ported
Recommended Power Range
15 - 200 watts
Binding Post Inputs
5-way Binding Posts (Non Bi-Wire)
Weight
52.5lbs / 23.81kg
Dimensions (HxWxD)*
44.41" x 8.75" x 16.02"
112.8cm x 22.22cm x 40.69cm
Finish
Black, Walnut, and Satin White