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We are not accepting orders at this time. Online ordering will resume Monday, May 28th at 9:45PM EDT. Our SuperStore and offices are currently closed and will reopen on Tuesday, May 29th at 9:00AM EDT.
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Auralex Great GRAMMA - 30" x 19" x 2 3/4" Sound Isolation Riser for De-Coupling a Large Speakers or Subwoofer - 4 Pieces
- Price: $338.00
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- White Glove Delivery available
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Usually ships in 7-10 days
Availability Details
CloseThis item is usually Drop Shipped from the MFR/Distributor within 7-10 days (subject to availability). Your order will be charged at the time of placing the order with the vendor. Item is non-cancelable and non-returnable.
International orders*
For international orders, credit cards will be charged at time you place your order.
The Great GRAMMA Sound Isolation Riser (Gig & Recording Amplifier & Monitor Modulation Attenuator) is an incredibly effective device that's used to decouple a large 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 sound will be significantly diminished.
The Great GRAMMA comes complete with a carrying handle, road-ready carpet, Studiofoam Wedges (underneath) and PlatFoam (underneath.) One to two GRAMMAs will support 4 x 12", 15" or 18" speaker cabinets.
Cases & Protection
- Price: $119.00
This item is usually Drop Shipped from the MFR/Distributor within 7-10 days (subject to availability). Your order will be charged at the time of placing the order with the vendor. Item is non-cancelable and non-returnable.
Room Analysis & Correction
- Price: $499.99
Books & Tutorials
- Price: $21.95
This is a new item not available yet. We are accepting pre-orders. Item is not cancelable and not returnable. An authorization for this product will be processed upon placing the order. Your order will only be charged at time shipping.
What's in the Box
- Each Shipping Carton Contains Four 30" x 19" x 2 3/4" Charcoal Risers
- Ninety (90) Day Warranty - Cosmetically Defective Products that are Uninstalled and As-New May Be Returned for Replacement of Like Products Within Ninety (90) Days of Purchase
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Place your domestic order with us for shipment via any UPS, FedEx Economy, or FedEx Priority shipping methods by 4 PM ET Monday through Thursday or 11 AM ET Friday and your order will be shipped that day. Visit our Shipping Delivery Times page for further details. Delivery times are subject to payment verification.
We appreciate your purchase from us, and we understand that sometimes the products you buy don’t turn out to be the right choice for you. We guarantee your peace of mind with our 30-day return policy. With no standard restocking fee and few restrictions, you’ll enjoy a return process as easy as shopping with us. Please visit our Return Policy page for further details.
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