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MartinLogan Dynamo 400 Powered Subwoofer

At a Glance

MartinLogan Dynamo 400 Subwoofer provides down to 30hz low-frequencies for home theater. Shop your authorized dealer for powered subwoofer deals.

Proposition 65 Warning for California Residents

The IME filter used in the Dynamo subwoofers is derived from the inverse of the unfiltered driver response

Low-noise, high-power switching power supplies produce clean power efficiently

Both feature high-quality MOSFET transistors, transformers, noise-suppression networks, and control circuitry

LEFT AND RIGHT 2-CHANNEL INPUTS

Dynamo 400 subwoofers feature left and right input via RCA line level as well as speaker level connections.

LFE HOME THEATER INPUT

Dynamo 400’s right inputs double as an LFE input for home theater applications.

POWERFUL, HIGH-EXCURSION, LOW-TURBULENCE, INVERTED SURROUND WOOFERS

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.

ADVANCED ULTRA-EFFICIENT SWITCH MODE POWER SUPPLIES AND CLASS-D AMPLIFIERS

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.

INVERSE MATHEMATICAL EQUALIZATION (IME) FILTER

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.