Specifications
Frequency Response 22120 Hz ą 3 dB. Anechoic
through the LFE effects input.
Low Pass Filter Frequencies 30, 35, 45, 55, 65, 80Hz
High Pass Filter Frequencies 70Hz
Phase 0°, 90°, 180°, 270°
25Hz Level ą10dB
Power On, Auto, Standby
Components 10 (25.4cm) high-excursion, alu-
minum cone with extended throw
driver assembly, sealed non-reso-
nant asymmetrical chamber format
Amplifier 300W (at < 0.5% THD)
From a low-distortion 300 watt (900 watt peak) switching amplifier Grotto i produces extremely articulate bass. MartinLogan's unique topology eliminates the need for exagerated amplifier power ratings or transient-blurring ported or passive radiator enclosures common to so many subwoofers.
Grotto i's proprietary servo system ensures that the woofers output is dramatically free of distortion, resulting in a faithful replica of the audio input signal. A robust connection and control systems allow simultaneous connection of both 2-channel stereo music and multi-channel home theaterand allows each source to have individual crossover and level settings. LFE input effectively uses no low-pass filter, leaving crossover control to the processor. Left/right line level and speaker level inputs integrate six discrete audiophile grade low-pass filters between 3080Hz allowing a different level and crossover point when playing back two channel music.
