Martin Logan Grotto Triple 15" Subwoofer Black Soundbars outstanding technical performance and solidly

outstanding technical performance and solidly engineered build quality

Aluminum shorting ring to reduce gap inductance

68″ W × 5

XLF (Extended Low Frequency) Intelligent Control – Delivers seriously low-end response with zero distortion or drama

ARCAM Class AB amplification - provides brilliant musicality

Martin Logan Grotto Triple 15" Subwoofer Black Soundbars outstanding technical performance and solidlyThe MartinLogan Grotto 15 is a triple 15 inch sealed hybrid woofer system driven by 2,000 watts of amplification. Its elegant enclosure conceals raw, room commanding bass performance, with ARC room correction, wireless audio, and app control ensuring perfection in any acoustical environment. Triple 15" sealed hybrid woofer system for extraordinary output and extension 2,000 watt amplifier for thunderous, controlled low frequency authority ARC room