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The GRAMMA Sound Isolation Riser (Gig & Recording Amplifier & Monitor Modulation Attenuator) is an incredibly effective device that's used to decouple a combo amp or loudspeaker from the floor, yielding nearly total acoustic sound isolation. The result in purity of tone is significant. An additional benefit is that the sound source, particularly a subwoofer, will no longer resonate through the floor to any space below. While it may still be heard, its effect will be severely diminished.
GRAMMA comes complete with a carrying handle, road-ready carpet, Studiofoam Wedges (underneath) and PlatFoam (underneath.) One to two GRAMMAs will support most amps, speaker cabinets, theater subwoofers and monitors. An optional GRAMMA gigbag is available.
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Reviewed by 4 customers
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Comments about Auralex GRAMMA Sound Isolation Riser:
Those Isolation Riser by Auralex are the best ways to improve the sound of your subwoofer. You got the message, no need to say more.
Pros
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Comments about Auralex GRAMMA Sound Isolation Riser:
I would highly recommend this product. It definitely made the bass from my sub in my home theater sound a lot tighter and less muddled.
Pros
Cons
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Comments about Auralex GRAMMA Sound Isolation Riser:
I use the GRAMMA under my Velodyne DLS-4000R subwoofer in an apartment with paper thin walls and it significantly reduces the sub sounds from vibrating everything and annoying the neighbors easier. The subwoofer is now clearer and is useable in an apartment setting. It will definitely decouple your sub (or whatever you put it under), but it is a little pricey for a carpeted piece of wood sitting on some simple foam. I'd buy it again, but I think it's overpriced.
Pros
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Comments about Auralex GRAMMA Sound Isolation Riser:
Seems to work pretty well for my sub. When on the floor, the house "adds" extra sound to the bass. When on this pad, the bass is cleaner and more clear. Guess it works!
Displaying reviews 1-4
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