Grotto i

Compact and Accurate

The world's most affordable servo-controlled subwoofer, Grotto i proves that a precise, compact subwoofer can have the heart of a beast.

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.

Launched in 2007

Price when discontinued:
$1,495.00 each

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Grotto i Specifications

Specifications are subject to change without notice

Customer Reviews For Grotto i

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Dan Petri

  • Sunday, June 9, 2013

What Subwoofer ??
I used to hate subwoofers until I paired the Grotto with my Magnepans. They integrate very well and are fast enough to keep up with the Maggies.


  • Wednesday, March 7, 2012

Good Sub
This sub is awesome!!! Worth every penny. Went from a bose system to this and its night and day. Wouldn’t be surprised if the foundation of my house has moved.


  • Sunday, November 8, 2009

The subwoofer sounds great. The bass is smooth and tight. I wish I would have bought two of them at the time of purchase. I may add another one later. I also like the cabinet design.