Auralex GRAMMA Reviews

david ochal
from amsterdam, ny
June 16, 2012Music Background:
pro musician

quality sound

these isolation board add a new dimension to your sound. bright clear and outstanding tones

from
May 15, 2012

Auralex Gramma

I got this to fit my BIC Acoustech PL-200 and it fits it perfectly even with a little extra in the back. I use it for HT purposes and it seems to work really well. I decided to purchase this after recommendations from the AVS Forum since I have hardwood floors. I know it might be expensive for what it is but it was worth it to me.

Steven R. Tompkins
from Turtletown, TN
July 7, 2011Music Background:
Recording Engineer, Live Sound Engineer, Studio Owner

Buy them. What a difference.

Placing speakers directly on a stage is just asking for resonance problems. Putting them on stands invites tip over’s (read children). How to get rid of the boom without creating a hazard? The Auralex GRAMMA did the job. I placed a pair of QSC KW153s on an outdoor, covered wooden stage with the GRAMMA in between, turned up the volume to about 96 SPL at 15 feet, put my hand on the stage and didn't feel a single vibration. The stage disappeared sonically. I put a set of JBL JRX-112M stage monitors on another pair of GRAMMAs and as my rating states, I was Blown Away. I will be buying a GRAMMA for every stage speaker and instrument cabinet from now on.

Tim
from Out in the Woods of Central Missouri
February 23, 2010Music Background:
Ex-Pro Guitarist, Recording & Live Sound Engineer

The Missing Link

I knew how much Auralex's MoPads helped studio monitors, but I was not prepared for the drastic improvement the Gramma & Great Gramma made to my guitar system. No matter what amp I've used this with, it's like hearing it for the first time. Lows are no longer the least bit mushy, all the tone controls are much more effective, and the differences between guitars are much more apparent. Everything is clear, present, and perfectly blended. This was the piece I've been missing! Now, all my amps sound they way I've always wanted them to and the way I always thought they should but never quite did. If you're not happy with the way your rig sounds, forget changing guitars, pickups, speakers, amps, strings, cables, picks, or anything else until you get one of these. I've already got 2 Grammas for my combos (Fender, Vox, and others) and a Great Gramma for my 4x12s cabinets (Marshall and Mesa-Boogie), and I'm planning on picking up a few more, just to make sure have enough to go around. Absolutely the BEST upgrade I've ever made and one of the cheapest, too!! Live, in the studio, or in the living room, this should be a required part of every rig in every situation...

Jbassmaniac
from Topeka Kansas
May 15, 2009Music Background:
30 years as a bassist. All styles.

WOW

This is the answer to all the problems that curse bass tone in live situations...short of having a really good amp. Notes were so much more pronounced. This will make you become a better player because it allows your amp to speak the truth about your licks. It was like night and day the difference everyone immediately heard. I now have two, one under each cab. I won't play without it.

from
April 18, 2007

Also a good sounproofing tool.

Band practice in my basement was brining too many noise complaints from my neighbor. As a last resort, I put one of these under the bass amp, which had been sitting on the concrete floor. The amp sounded dramatically better: You could pick out pitches a lot easier, where as before you knew it was there, but it was more of a rumble than a note. Although the volume in the room didn't change noticably, my decibel meter registered an average of about a 6dB drop outside the house. The difference was much more dramatic inside my neighbor's house -- apparently the bass was being transmitted through the ground and vibrating their foundation.

Josef
from Central Coast California
August 18, 2012Music Background:
all the above

It works!

Works really well! Does what it claims. Tip - stick the amp/speaker up to the edge - makes a difference.

CP
from Santa Barbara, CA
January 14, 2012Music Background:
Overly Dedicated Hobbyist

Excellent Purchase

I bought this as part of an overall acoustics treatment I just applied to my home studio/music room. It's been a great addition.

I use a dual amp setup with a lot of effects pedals. Specifically, I combine overdrive, delay, and a pitch-shifter to create a massive bass rumble from a regular guitar. Now that I have each amp up on a Gramma, my windows don't rattle, other gear in the room doesn't vibrate, and the clarity of the amp has greatly increased. When I bought these, I figured it would help with those issues, but didn't really know what I should be listening for. However, the difference was immediately obvious. I'm really looking forward to hearing how this affects recording quality.

Overall, I really recommend this. Gives you a much truer picture of how your amps sound, especially if your floors are carpeted.

John G.
from New York City
February 12, 2007Music Background:
Audio for video producer

Sub-lime!

We can't all "float" our studios, and acoustically decouple them from their environment. But I was able to decouple my monitors from the their dobro-like surroundings using the Gramma and MoPads. Evidently some things are better not together. Noticable improvement in every aspect of sound quality, dramatic improvement in tightness of bass and reduction of smear in stereo soundstage. You may not be able to float your room, but the coupled decouplers of Gramma and MoPads ought to float your boat.

R Byers
from S. California
July 28, 2010Music Background:
Audiophile, HT Enthusiast and musican for many years early in life

The GRAMMA. Mother of all Mothers for a Subwoofer

Bought two to fit under my JL Audio F113's which, in my upstairs family room, were just incredible sounding but causing a great deal of floor, wall and whatever is inside the walls you can imagine, to vibrate with certain frequencies I could not tame causing uneven response across the lower audio band. Also, no matter what I did there seemed to be a mild to moderate thickening of the upper bass/lower midrange. After installng the two GRAMMA's and resetting the JL Audio ARO program for the woofers, I found a drastic reduction in room interaction when running the ARO program. Further, upon completion and auditioning the subs thereafter, I found a distinct improvement in clarity, tone (and they were superb before), frequency response, tight - fast transient response, and a new chestiness to the lower end that was missing. On HT material, the bombastic LFE effects are now superb and integrate perfectly with the mains. Even tighter and more realistic than before. Musically, they are now in an all new class. Just crank up The Police - Certifiable blu-ray at 24/96 encode and be prepared. The transient speed of the kick drum is just plain world class, with incredible kick, speed, and dynamics. Also, a natural, life like separation between the kick drum and Sting's bass is just incredible. I give these four stars only for the relatively spartan construction. Other than that, from a pure sonic stand point, 10 out of 10 and VERY highly recommended.

Rob
from Burnaby, BC, Canada
October 21, 2007Music Background:
home theatre enthusiast

Should be included with every subwoofer!

I'm using the GRAMMA under my HSU VTF-3 MK II subwoofer for multi-channel music and home theatre. Prior to buying the GRAMMA, I had the subwoofer sitting directly on thin carpet over concrete with the included feet/spikes. Puttin the GRAMMA underneath made a large and immediately noticable improvement. Without it, my wall and basement window used to vibrate at certain frequencies and there was an obvious "rumble" throughout the whole room and it could easily be heard throughout the entire house! With the GRAMMA in place, the window rattle disappeared and the room resonance was greatly reduced. You can still hear the sub throughout the house, but now it is only the notes coming from the sub itself. The whole house no longer shakes and the bass and LFE in my theatre now sounds much tighter and better defined. I gave a 4 star rating and not a 5 because the build quality is a little on the cheap side. The rugged carpet material used on the "platform" of the GRAMMA is very durable, but the edges are just glued down and it looks a little ragged up close. Looks a bit more like a DIY item, in other words, rather than a really clean, high class product. But given that it sits under a sub all the time, I doubt many people will really be looking at it close up very often. It performs, big time, and that is what matters. Every subwoofer in the world should have a GRAMMA under it as far as I am concerned.

Antonio Machado
from Dumont, New Jersey
March 18, 2007Music Background:
Hobbyist

Great addition to my Velodyne DD15 Subwoofer

Hello there: I have a very fine two-chanel system which includes Metronome Transport and d.a.c., Magnum Dynalab FM Tuner, Acoustic Signature Final Tool Turntable, McCormack DNA225 Power Amplifier and RLD1 Pre amplifier (both of them upgraded to "Platinum Edition" by the manufacturer), RGPC 240 Volts Sub Station and a pair of Ambience Superslim 1800se Ribbon Speakers. My Subwoofer is Velodyne DD15. After getting two Auralex Subdude side by side under my subwoofer I got an even better bass: subterranean, deep, flat and better focused bass. Those two Auralex Subdude are a great addition to get the very best from my DD15 subwoofer. Highly recommended.

Keith
from North Bay California
October 1, 2004

Gramma's work wonders

Have had my Gramma for about 3months and it works great under my home theater subwoofer! The best $50 spent to improve the sound and feel of movies and music. The sub no longer vibrates across the hardwood floor causing a terrible sound, no to mention the scrathes. It's hard to explain how much better the sub sounds, here's a frequency response graph comparing with and w/o the Gramma. http://img.photobucket.com/albums/v24/weezR/PB2Ultra/Wvs.jpg

Just by adding the riser it tamed the peaks at 50 and 60Hz. Highly recommended!!! I just with it came in larger sizes.

http://img.photobucket.com/albums/v24/weezR/PB2Ultra/P1011234.jpg

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