MartinLogan Motion 30i Centre Speaker

Brand: MartinLogan
Product Code: MLO-MOTION-30I
Warranty: 5 Years
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$1,299.00
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Motion 30i

MartinLogan Motion 30i Centre Speaker

Motion 30i Centre Channel Speaker

Smaller multi-channel audio systems will benefit from the significant dynamic impact and detailed imaging revealed by a Folded Motion® tweeter and dual, rear-vented 5.5-inch aluminium cone woofers, and a proprietary Vojtko crossover network. Motion 30i delivers the classic broad soundstage of the Motion Series from a newly designed enclosure enhanced by the slightest of modifications, including the drive-stabilising 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.

MartinLogan Motion 30i Centre Speaker

Engineering, Without Compromises

What makes the Motion Series sound so amazing? MartinLogan's dedicated in-house engineering and design team started by utilising and refining the most advanced, compact technologies and combining them with innovative engineering and time-honoured 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.

MartinLogan Motion 30i Centre Speaker

Folded Motion® Tweeters

MartinLogan's signature Folded Motion tweeter utilises an extremely low mass diaphragm that "squeezes" air, thus demanding significantly less excursion than the typical 1-inch dome tweeter. Its folded design allows for a much larger surface area (compared to that of a regular 1-inch dome tweeter), controlled dispersion characteristics, and vanishingly low distortion. It's a miracle of audio engineering that's able to deliver much of the high-frequency detail and speed of a large, dynamic electrostatic panel in a small space.

MartinLogan Motion 30i Centre Speaker

Powerful Aluminium Cone Mid-Frequency and Bass Drivers

Custom built, low-distortion drivers pair high-power magnet structures with aluminium cone diaphragms to deliver massive excursion and sound output, preserve minute bass details, and maximise power handling capability, all without a hint of distortion. A unique concave dust cap design reinforces the strength and rigidity of the cone while reducing break up modes.

The use of aluminium for cones maximises rigidity and strength of the drivers without adding excessive weight. This, along with the exceptional damping properties of aluminium, ensures the smooth, non-resonant response necessary for seamless blending with high-resolution Folded Motion tweeters. An added benefit of aluminium is its outstanding thermal conduction capability which allows cones to serve as efficient heat sinks for voice coils.

To deliver accuracy in the critical midrange, mid-frequency drivers feature a specially engineered "stiff" suspension. Stiffening the suspension (the spider and surround) raises the driver's resonant frequency and optimises its performance to achieve a natural roll-off and inherently operate within an ideal range for a mid-frequency reproduction (as opposed to a comparably sized woofer).

MartinLogan Motion 30i Centre Speaker

Proprietary Vojtko Crossover Networks

Premium Motion Series speakers feature proprietary Vojtko crossover networks using polypropylene and low-DF electrolytic capacitors, custom-wound inductors, and thermal and current protection.

Vojtko crossovers are named after MartinLogan's chief audio technologist, Joe Vojtko. His unique approach to crossover design is as big of a part of the "MartinLogan Sound" as are electrostatic and Folded Motion thin-film driver technologies. A Vojtko crossover isn't so much a set of design requirements as it is a philosophy. Vojtko crossovers are designed in such a way that all drivers are kept within their optimal frequency range and balanced with one another. The drivers themselves are as much a part of a Vojtko crossover as are capacitors and resistors. Before the design of any crossover begins, drivers are carefully selected or designed to operate within a very intentional frequency range and with precise and predictable performance parameters. Vojtko crossovers are always built from high-quality parts, and care is taken to avoid overly complex topologies—a straightforward objective due to the careful selection of woofers and tweeters. The final (and most critical) aspect of a Vojtko Crossover is that final voicing is conducted in a space that is indicative of a real-world environment. This pragmatic approach allows MartinLogan speakers to sound their best in real-world rooms.

MartinLogan Motion 30i Centre Speaker

Modern Design Featuring Luxurious Finishes

Discreetly hidden behind fabric wrapped magnetic grilles, Folded Motion and aluminium cone drivers are held securely in place beneath matte black trim that masks tweeter and woofer mounting hardware for a clean, modern aesthetic. Solid cabinets, designed to eliminate fidelity robbing vibrations, are constructed from 18mm (0.7-inch) MDF with 31mm (1.2-inch) thick front baffles. Motion 60XTi and 50XTi feature additional internal bracing to further reduce cabinet resonance.

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 coloured trim.

MartinLogan Motion 30i Centre Speaker

Custom 5-Way Tool-Less Binding Posts

Premium gold-plated 5-way tool-less binding posts assure a stable connection while accommodating bare wire, banana plug, spade lug, terminal pin, and (seldom used) alligator clip connections.

MartinLogan Motion 30i Centre Speaker
Specifications
Frequency Response 65 – 25,000 Hz ±3 dB
Recommended Amplifier Power 20 — 200 watts per channel
Horizontal Dispersion 80°
Vertical Dispersion 80°
Sensitivity 91 dB @ 2.83 volts/metre
Impedance 4 ohms (Compatible with 4, 6, or 8 ohm rated amplifiers)
Crossover Frequency 400 & 2,600 Hz
High Frequency Transducer 1" x 1.4" (2.6 cm x 3.6 cm) Folded Motion Transducer with 5.25" x 1.75" (13.3cm x 4.4cm) diaphragm
Low Frequency Transducer Two 5.5” (14 cm) aluminium cone with cast polymer 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. Overall system thermal/current protection.
Inputs Custom 5-way tool-less binding posts
Weight 18 lb (8.2 kg)
Dimensions 6.9" x 16.5" x 10.5" (17.5 cm x 42 cm x 26.6 cm)
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