Martin Logan Motion 40 Floorstanding Loudspeakers


The Motion 40 is a breathtaking visual statement regardless of its compact dimensions. A 5-1/2″ aluminum cone mid range drive and dual 6-1/2″ woofers are paired with a rear-firing bass port for extra punch in the low frequencies. With the addition of our Folded Motion tweeter it's a design that delivers solid low-frequency reinforcement, superb sound dispersion and precise, highly dynamic high frequencies.

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The elegant Motion 40 features an advanced resolution Folded Motion tweeter, a 5-1/2″ aluminum cone midrange driver and dual 6-1/2″ aluminum cone woofers.

Part of the secret to the Motion 40’s outstanding performance lies in the dual oversized black-aluminum cone woofers paired with a rear-firing bass port. The oversized woofer design creates increased cone area delivering higher output and audibly richer, deeper bass performance than it’s slightly smaller sibling, the Motion 20. The addition of a dedicated mid-woofer also promotes an even more open, revealing and authentic sound in the critical midrange.

Motion 40
Frequency Response 40–25,000 Hz ±3dB
Dispersion 80° x 80°
Sensitivity 92 dB/2.83 volts/meter
Nominal Impedance 4 Ohms. Compatible with 4, 6 or 8 ohm rated amplifiers.
Recommended Amplifier Power 20-300 watts per channel
Crossover Frequency 500 & 2,600 Hz
Crossover Components Precision Vojtko™ with custom air core coil and low DCR steel laminate inductors. Polyester film capacitors in series and low DF electrolytic capacitors in parallel
High Frequency Transducer 1″ × 1.4″ (2.6cm × 3.6cm) Folded Motion Transducer with 5.25″ × 1.75″ (13.3cm × 4.4cm) diaphragm
Mid Frequency Driver 5.5″ (14cm) aluminum cone in a non-resonant asymmetrical chamber format. Cast polymer basket. Rigid structured dustcap reduces cone break-up.
Low Frequency Driver Two 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.
Binding Posts Custom 5-way bi-wire tool-less binding posts
Spikes Included MiniETC™ Spikes
Weight 49lbs. (22.2kg) each
Overall Dimensions
42.5 x 7.6 x 12.8 (107.9cm x 19.2cm x 32.6cm)


You want home theater to be simple, right? Just add an award winning Martin Logan Dynamo Subwoofer to any Motion® Series system for the perfect finish to an already amazing theater package. What could be easier? Here are a few fantastic systems we’ve put together to help make movies and music sound better than you ever thought possible.



Tower Systems

Super Ultimate
Fronts Motion 40 Motion 60XT
Center Motion 30 Motion 50XT
Surrounds (5.1) Motion 4 Motion FX
Surrounds (7.1) Motion FX
Subwoofer Dynamo 700w Dynamo 1000w

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