RRP: $4,299.00

A floor-standing speaker that expresses both power and finesse. ...
SKU: 7f141cf8e713
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The secret to the Martin Logan Motion 40i’s outstanding performance lies in its Folded Motion® tweeter, 5.5-inch aluminum cone midrange driver, dual 6.5-inch aluminum cone woofers with a rear-firing bass port, and a proprietary Vojtko crossover network. This double woofer design produces vibrant, accurate deep bass performance. Motion 40i 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, stiffened motor suspension, and low-mounted woofers to reduce an acoustically harmful phenomenon known as floor bounce. The speaker’s enclosure sports a reinforced baffle and a fabric grille. Available in three stylish finishes: gloss black, matte white, and red walnut.


Frequency Response40–25,000 Hz ±3dB
Recommended Amplifier Power20—300 watts per channel
Horizontal Dispersion80°
Vertical Dispersion80°
Sensitivity92 dB/2.83 volts/meter
Impedance4 Ohms Compatible with 4, 6, or 8 Ohm rated amplifiers.
Crossover Frequency500 & 2,600 Hz
High Frequency Transducer1″ × 1.4″ (2.6cm × 3.6cm) Folded Motion Transducer with 5.25″ × 1.75″ (13.3cm × 4.4cm) diaphragm
Mid Frequency Transducer5.5″ (14cm) aluminum cone in a non-resonant asymmetrical chamber format. Cast polymer basket. Rigid structured dustcap reduces cone break-up.
Low Frequency TransducerTwo 6.5″ (16.5cm) aluminum cone woofers in a non-resonant asymmetrical chamber format. Cast polymer basket. Rigid structured dust caps reduce cone break-up.
ComponentsPrecision Vojtko™ with custom air core coil and low DCR steel laminate inductors. Polyester film capacitors in series and low DF electrolytic capacitors in parallel
InputsCustom 5-way bi-wire tool-less binding posts
Weight49 lbs. (22.2 kg)
Dimensions42.5″ x 7.6″ x 12.8 ”
(107.9cm x 19.2cm x 32.6cm)

• Big performance without sacrificing “truth”.