Martin Logan Grotto i

Compact and Accurate

A powerful 300 watt (900 watt peak) low-distortion, high-reliability amplifier gives Grotto i extremely articulate bass without need of exaggerated amplifier power ratings or transient-blurring ported or passive radiator enclosures common to many modern subwoofers. A proprietary servo system further ensures that output from Grotto i's 10-inch high-resolution aluminum cone woofer is dramatically free of distortion and provides a faithful replica of the audio input signal.

Frequency Response	22–120 Hz ±3dB; Anechoic through LFE effects input
Low Pass Filter Frequency	30, 35, 45, 55, 65, 80Hz
High Pass Filter Frequency	70Hz
Low Frequency Transducer	10" (25.4cm) high excursion, aluminum cone with extended throw drive assembly, sealed non-resonant asymmetrical chamber format
Amplifier	300W (at less than 0.5% THD) 900W (peak)
Impedance	Line level RCA: 20,000 Ohms. Compatible with 4, 6, or 8 Ohm rated amplifiers.
Audio Controls	±10dB at 25Hz
Inputs	Left/Right RCA Line Level, RCA LFE, Speaker Level
Power Draw	Max: 250 Watts Idle: 15 Watts Standby: 10 Watts
Weight	51 lbs. (23.2 kg)
Dimensions	18.6" × 15.2" × 13.8" (47.3cm × 38.6cm × 35cm)