Auralex Great Gramma

[lsiberian]

I just got an

Auralex Great Gramma

It made a noticeable improvement in the quality of bass from my current sub and I couldn't hear the sub in my other rooms anymore. My neighbors are probably much happier and so am I. If you want to upgrade your sub try out one of these.

 

[j_garcia]

Congrats. Do I then presume you live in an apartment? I use MoPads on my 3 main speakers.

 

[lsiberian]

Congrats. Do I then presume you live in an apartment? I use MoPads on my 3 main speakers.

I do, but this thing improved the clarity of my subwoofer. So I think I would use it anywhere.

 

[j_garcia]

I had been considering one, but my HT floor is concrete so I don't get all the sympathetic resonance that I used to in my upstairs apartment. I don't get ANY in the floor in fact, the couch vibrates from the sub itself

 

[XEagleDriver]

I'll second that!

Concur +1

It works great for me as well. Sounds better and is no longer causing plaster pops in the walls of adjacent rooms.

 

[j_garcia]

I just received my gramma this weekend and installed it. It made a VERY noticeable improvement in my bass because my sub is large and can be a bit overbearing. If I run it a bit hot, it takes over and gets a little annoying at times, but if I run it lower it doesn't give me all of that rumble at lower listening levels. Adding the Gramma allows me to run it at the level that I want without getting too much resonance in the room while still giving me all of the bass. The upper midbass was cleared up considerably too.

 

[64met]

For those of you using Auralex Great Gramma; would U mind posting pics or briefly telling me about your set up and what led you to buy this in terms of your room? Thxs in advance... I am trying to tighten my bass up and I feel at this point it is more my room than my gear.

 

[mike c]

I just received my gramma this weekend and installed it. It made a VERY noticeable improvement in my bass because my sub is large and can be a bit overbearing. If I run it a bit hot, it takes over and gets a little annoying at times, but if I run it lower it doesn't give me all of that rumble at lower listening levels. Adding the Gramma allows me to run it at the level that I want without getting too much resonance in the room while still giving me all of the bass. The upper midbass was cleared up considerably too.

so it helped you EVEN with your concrete floor?

 

[j_garcia]

so it helped you EVEN with your concrete floor?

It sure did. Someone else on here mentioned that it helped with a concrete floor and it helped so I tried it with some extra MoPads that I have from my front 3 and just that made a noticeable difference. The MoPads are split though and not large enough to support the sub so I bought the Gramma. I have a feeling this will help with pretty much any sub with any type of floor construction. I haven't had time to run tones, but the difference was immediately apparent. I will try to grab a pic tonight.

 

[lsiberian]

so it helped you EVEN with your concrete floor?

It is essentially a floor boundary isolator. So it cuts down on floor effects a lot. It's also a very nice pad to set a sub on. You don't need spikes or to drill holes for spikes. It can hold a lot of weight too. I think it's a good solution for DIY subs. And can help other subs.

It ain't pretty though.

I think I may end up getting a pair of subdudes for my kappas and placing them under the pair.

 

[mike c]

will you be able to slide your sub around once it's placed on the gramma?
(is the gramma slideable?)

 

[lsiberian]

will you be able to slide your sub around once it's placed on the gramma?
(is the gramma slideable?)

Yes. It is very easy to adjust the sub on the gramma. Assuming of course that your sub has a smooth bottom. If it has spikes you will want to remove them.

 

[j_garcia]

My sub is pretty big and I was able to move it around on top of the pad easily. Not so easily that it slides, but just enough effort that it won't move on its own. My sub had 5 rubber feet on the bottom that I had to remove.

 

[mike c]

sorry, what i meant was, would you be able to move the gramma with the sub on top?

 

[j_garcia]

Probably not too easily for me since it is on carpet. The foam is relatively "clingy" and doesn't slide too well.

PICS just taken here

 

[lsiberian]

sorry, what i meant was, would you be able to move the gramma with the sub on top?

That depends on your flooring and is a result of the force of friction between your flooring and the pad itself. However I don't suggest sliding a gramma around with a sub on top of it. It may be possible to put too much force in the wrong direction that way. Unless you have a wood laminate or similar flooring type. I have a small sub and I still wouldn't do it. A large sub isn't a good idea at all IMO.