Martin Logan Dynamo 400 8″ SUBWOOFER

Martin Logan Dynamo 400 8″ SUBWOOFER


Available with supplier: ETA 5-7 business days

  • 8-inch inverted surround poly cone woofer
  • 150 Watts (peak) amplifier
  • Low-turbulence, ported design
  • RCA and speaker level inputs

Available to order

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The Martin Logan Dynamo 400 features a 150 Watt (peak) amplifier, 8-inch audiophile grade woofer, and RCA and speaker level input options. Dramatic bass detail and attack, superb extension, and room-shaking output ensure a compelling music and home theatre experience. Designed to blend seamlessly with your existing audio setup, the Dynamo 400 is the secret weapon that completes the sonic puzzle. Its compact form belies the immense power it possesses, allowing it to effortlessly fill any room with its authoritative presence.

Prepare to be swept away as the Dynamo 400 breathes life into your favourite movies, adding a newfound depth and richness to the soundtracks. Experience the adrenaline rush of action sequences, the delicate subtleties of dialogue, and the immersive ambiance of atmospheric soundscapes like never before. Indulge in the luxury of unparalleled bass performance that not only ignites your senses but also elevates your listening experience to extraordinary heights. The Martin Logan Dynamo 400 subwoofer is the key to unlocking the full potential of your audio system, bringing you closer to the true essence of your favourite music and movies.



The latest generation of MartinLogan Dynamo subwoofers feature advanced-design woofers with inverted surrounds and powerful magnet, motor, and suspension designs. In front-fire mode the unique inverted surround design maximizes excursion clearance behind the grill cover. When positioned in a down-firing configuration, the inverted surround significantly reduces airflow related turbulence for an articulate and detailed low-frequency experience. These advanced-technology woofers pair a high-power magnet structure (significantly more robust than previous generations) with low-mass diaphragms to provide massive excursions while perfectly preserving the tiniest bass detail. The exceptional damping properties of the cone ensure a smooth, non-resonant response necessary for truly seamless blending with high-performance loudspeakers. Every element of Dynamo subwoofers has been meticulously designed to deliver a staggering low-frequency performance – all without a hint of distortion.



Dynamo subwoofer class-D amplifiers operate with extremely low levels of distortion and deliver dynamic impact with plenty of overhead. Low- noise, high-power switching power supplies produce clean power efficiently in a small space and effortlessly provide tremendous levels of current. Both feature high-quality MOSFET transistors, transformers, noise-suppression networks, and control circuitry. The switching power supply combined with reliable class-D technology means there’s virtually no energy lost in the subwoofer system.


When properly optimized and executed, ports are a convenient, cost- effective way to increase low-frequency output. Dynamo 400 and 600X feature tuned, long low-turbulence ports designed to provide superb low-end extension while minimizing port induced distortion.


The IME filter used in the Dynamo subwoofers is derived from the inverse of the unfiltered driver response. Precision IME filtering yields extremely accurate low-frequency response—superior to that provided by the simple second-order high-Q filters typically found in subwoofers in this price range.


Specifications – Martin Logan Dynamo 400 


Frequency Response30–200 Hz ±3 dB. Anechoic in LFE mode.
ImpedanceRCA: 8,300 Ohms
Speaker Level: 2,000 Ohms (red to black)
Low Frequency Transducer8” (20.3cm) high-excursion, inverted surround, polypropylene cone in a stamped steel basket with extended throw driver assembly. Ported.
Amplifier75 Watts (150 peak)
Controls (Backplate)Level: Min–Max
Low-Pass Filter: 35–120Hz, Bypass
Phase: 0°, 180°
Power Mode: On, Auto
InputsLine Level: Left, Right/LFE
Speaker Level: Left and Right via banana jacks
Power DrawTypical: 20W, Max: 90W, Idle: 4W, Standby: 0.5W
Weight28.5 lbs. (12.9 kg)
Dimensions15.2″ x 13.3 ” x 13.7 ”
(38.5 cm x 33.7cm x 34.8 cm)
FinishSatin Black


Dynamo 400 

Dynamo 400 

Dynamo 400 

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Weight15 kg
Dimensions60 × 50 × 50 cm
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Dynamo 400Martin Logan Dynamo 400 8″ SUBWOOFER

Available to order