Martin Logan Grotto Subwoofer
Year: 2003
The Martin Logan Grotto is a compact, powerful (250W RMS) servo-driven subwoofer featuring a 10" aluminum driver and adjustable crossover, yet remains precise and musical. It rivals much larger models by offering surprising performance in a sleek design.
Compact and precise: servo and aluminum cone deliver deep yet controlled bass, uncolored even in a small cabinet.
Sufficient amplification: 250W RMS provides ample reproduction without excessive distortion.
Customizable: adjustable crossover and bass level for adapting to different rooms.
Type: Active, servo-driven subwoofer, sealed enclosure
LF driver: 10" (25cm) long-excursion aluminum cone, asymmetrical non-resonant chamber
Amplifier: 250W RMS (350W peak)
Low-pass filter: 22-150 Hz
Low-high crossover: 70Hz
Adjustable low-pass filter: 30, 35, 45, 55, 65, or 80Hz
Level control @25Hz: +/- 12 dB
Input impedance: RCA line: 20 kohms, compatible with 4/6/8 ohm amplifiers
Audio connections: RCA stereo line input, RCA LFE input, speaker-level input
Weight: 18.2 kg
Dimensions: 39.1 x 38.1 x 12.9
Data sheet