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The Grotto 12 is MartinLogan's sealed-box powered subwoofer built around a 12-inch aluminum cone driver and a downward-firing passive radiator. Its hybrid design adds low-end output without the port chuff of a bass-reflex cabinet, and the built-in amplifier and controls let it blend with both movie and music systems. It suits listeners who want tight, deep bass in a mid-sized room and prefer a compact sealed cabinet over a big ported box. Against ported rivals at the same size it gives up some raw output at the very bottom but gains cleaner, faster decay that music listeners tend to prefer.
In stock
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Lowest price we've seen: $1,954.99 on Nov 10 at Best Buy. Tracked across 1 store since Nov 10.
Owners describe the Grotto 12 as tight and musical rather than boomy, with enough depth for movies. Most praise how well it disappears into a music system once dialed in. A few wish for more output in large rooms.
