Uploaded June 2026 | Updated September 2026, 1 week ago

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Martin Logan Dynamo 400 Home Powered Active Subwoofer Sub with 8" Woofer

Specs:
frequency response: 30-200 Hz (±3dB)
built-in amplifier delivers 75 watts of continuous power (150 watts peak)
8" high-excursion polypropylene woofer with an inverted surround
bass-reflex (ported) cabinet with down-firing woofer and slot port
continuously variable low-pass 35-120 Hz crossover (back panel)
level control (back panel)
auto on/off switch (back panel)
phase switch (back panel)
RCA stereo/LFE line-level input
speaker-level inputs
satin black finish
13-5/16"W x 15-1/4"H x 13-3/4"D
weight: 28.5 lbs.