MartinLogan Revamped Grotto Line Digs Deep with 1kW 12" & 15" Subwoofers
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MartinLogan has revamped its Grotto line, which includes subwoofers. The revamped line features 12" and 15" subwoofers with 1kW power. The Depth 212 and Depth 215 subwoofers are part of this revamped line, appearing to be a return of high-end models.