Auralex Subdude Owners Thread - Page 25 - AVS Forum
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post #721 of 1318 Old 03-10-2010, 07:44 AM
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Originally Posted by Geek From NJ View Post

But what about on a concrete slab? Any Benefit or wasting my dads money?

I read this whole thread last night. I know at least 5-6 guys had the same question. Not sure anyone had an absolute answer. My guess is that it would still help some, maybe just not as much as if it were upstairs or on wood. If he has unwanted rattles/vibrations, it should help that.
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post #722 of 1318 Old 03-10-2010, 02:13 PM
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I used a Gramma under my sub in a basement room, carpet over concrete. I was happy with the result. Prior to using, pictures on the wall and a clock would tilt after playing movies. After they not only did not move, but I felt my bass was tighter, with reduced booming.

I know some have said it won't make a difference over concrete, but for me it worked. Everyone's application will be different. I would try it and see if it works.

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Originally Posted by jacksonian View Post

I read this whole thread last night. I know at least 5-6 guys had the same question. Not sure anyone had an absolute answer. My guess is that it would still help some, maybe just not as much as if it were upstairs or on wood. If he has unwanted rattles/vibrations, it should help that.

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post #723 of 1318 Old 03-10-2010, 02:34 PM
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There have been reports that a Subdude does in fact help on a concrete floor. Concrete does transmit vibrations even though it is dense . I would recommend using one on a concrete floor.
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post #724 of 1318 Old 03-20-2010, 12:31 PM
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Will the gramma hold a large speaker, such as Dali Ikon 7's?

Im worried they might tip over?

Also, would I see a difference even though Im using spikes for my speakers?

Thanks
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post #725 of 1318 Old 03-20-2010, 01:05 PM
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Quote:
Originally Posted by monstosity12 View Post

Will the gramma hold a large speaker, such as Dali Ikon 7's?

Im worried they might tip over?

Also, would I see a difference even though Im using spikes for my speakers?

Thanks

I have JTR Quintuples resting on 2 of my Auralex Gramma pads. The dimensions of mine are 43″x12.25″x16.5″ and they weigh 118lbs each. No issues with tipping over for me.
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post #726 of 1318 Old 03-20-2010, 01:36 PM
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Quote:
Originally Posted by monstosity12 View Post

Will the gramma hold a large speaker, such as Dali Ikon 7's?

Im worried they might tip over?

Also, would I see a difference even though Im using spikes for my speakers?

Thanks

Do you mean spikes (on carpet), versus no spikes and speakers set directly on Gramma?

On carpet, I find my speakers are very stable on spikes. Depends how heavy your speakers are, maybe. Mine aren't too heavy, and without the spikes (same flat surface as the bottom of my tower stands) they are pretty wobbly in comparison. I would guess they would be about as stable on the carpet on the gramma as they are just sitting on the carpet without spikes.

I don't know how much sound transmits through the spikes to the floor, so I don't know if the gramma would help with speakers in that sense.
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post #727 of 1318 Old 07-10-2010, 11:51 PM
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Can someone help me choose which auralex platform to get.

I want to isolate my Dali Ikon 7 speakers more in my room. As my room is a second floor room that is over my garage. You can imagine the vibrations I get when I play my music loud, with my speakers sitting on a susupended floor.

Right now I have my Dali speakers on spikes.

I was either thinking of the...
AuraLex subdude
OR
AuraLux Gramma

Any of these will work better the supplied dali spikes, right? Resulting in less muddled bass, right?
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post #728 of 1318 Old 07-11-2010, 05:02 PM
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Quote:
Originally Posted by monstosity12 View Post

Can someone help me choose which auralex platform to get.

I want to isolate my Dali Ikon 7 speakers more in my room. As my room is a second floor room that is over my garage. You can imagine the vibrations I get when I play my music loud, with my speakers sitting on a susupended floor.

Right now I have my Dali speakers on spikes.

I was either thinking of the...
AuraLex subdude
OR
AuraLux Gramma

Any of these will work better the supplied dali spikes, right? Resulting in less muddled bass, right?

This mostly depends upon the dimensions of your speakers and assumes not too much overlap that might result in instability. If you have a subwoofer, I would treat that first.
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post #729 of 1318 Old 07-18-2010, 07:58 PM
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Just ordered the Gramma for my Outlaw LFM-1 for my upstairs apartment. Everything rattles alot so I'm curious to see if I will have an improvement.
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post #730 of 1318 Old 07-22-2010, 11:19 AM
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Same here. Ordered two GRAMMA's from Sweetwater that are due to arrive tomorrow for my two JL F113's. I have a similar problem with my upstairs HT room. My S/O hates the rattling and feeling everything is going to fall apart, so hope this will settle some of those issues.
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post #731 of 1318 Old 07-22-2010, 03:54 PM
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Quote:
Originally Posted by monstosity12 View Post

Can someone help me choose which auralex platform to get.

I want to isolate my Dali Ikon 7 speakers more in my room. As my room is a second floor room that is over my garage. You can imagine the vibrations I get when I play my music loud, with my speakers sitting on a susupended floor.

Right now I have my Dali speakers on spikes.

I was either thinking of the...
AuraLex subdude
OR
AuraLux Gramma

Any of these will work better the supplied dali spikes, right? Resulting in less muddled bass, right?

Gramma is for subs. You need these.

http://www.auralex.com/sound_isolati...tion_mopad.asp

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post #732 of 1318 Old 07-24-2010, 09:55 AM
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Would there be a difference between using the foam that came in the package with the subwoofer to make a platform and just building a regular platform with wood feet on each corner? (thinking more aesthetics than anything else with that one) I am just not sure how much the "type" of foam makes a difference vs just getting the sub up off the floor or a dedicated platform with minimal contact to the floor.
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post #733 of 1318 Old 07-24-2010, 10:24 AM
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Quote:
Originally Posted by Jrunr View Post

Would there be a difference between using the foam that came in the package with the subwoofer to make a platform and just building a regular platform with wood feet on each corner? (thinking more aesthetics than anything else with that one) I am just not sure how much the "type" of foam makes a difference vs just getting the sub up off the floor or a dedicated platform with minimal contact to the floor.

If there were no difference, then Auralex isolators are all hype. The GRAMMA was developed to be used by rock musicians who had to play on unpredictable surfaces ranging from the highly vibrating wooden floor to something a lot more solid and everything in between. There are enough testimonials from these users so that the only valid conclusion is that it does make a significant difference and from there to a subwoofer is not a huge leap of faith and won't cost a small fortune.
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post #734 of 1318 Old 07-24-2010, 10:49 AM
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Quote:
Originally Posted by Jrunr View Post

Would there be a difference between using the foam that came in the package with the subwoofer to make a platform and just building a regular platform with wood feet on each corner? (thinking more aesthetics than anything else with that one) I am just not sure how much the "type" of foam makes a difference vs just getting the sub up off the floor or a dedicated platform with minimal contact to the floor.

Making a Subdude with just wooden feet will not yield the same results as the foam that the original Subdude has. I made my own Subdudes. I have a special method of replicating the foam that is on the original. They work just like the original Subdude does. The wood surrounds are just to hide the foam. The wood doesn't touch the floor.
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post #735 of 1318 Old 07-24-2010, 11:12 AM
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Quote:
Originally Posted by Jrunr View Post

Would there be a difference between using the foam that came in the package with the subwoofer to make a platform and just building a regular platform with wood feet on each corner? (thinking more aesthetics than anything else with that one) I am just not sure how much the "type" of foam makes a difference vs just getting the sub up off the floor or a dedicated platform with minimal contact to the floor.

There is a difference between your packing foam and the foam auralex uses, but you can certainly do a DIY version using your own foam -- and you'll probably get some benefit from that. If you have some extra time on your hands, and a little wood for the platform, you've got nothing to lose to try this free experiment.

Note that the packing foam is probably NOT fire-retardant and this would actually be my biggest concern. Adding flammable material to a piece of furniture is not a very good idea, imo.

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post #736 of 1318 Old 07-24-2010, 03:01 PM
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Chip in with a few friends and buy the Plat-Foam kit: http://www.auralex.com/sound_isolati...n_platfoam.asp

You can build a lot of isolators from that.

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post #737 of 1318 Old 07-24-2010, 04:30 PM
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The only reason I really ask is because the Auralex gramma is about 1.5" too narrow for the sub I want to use it with. The great gramma would be WAY too big for my application so I was trying to go custom... That being said, would there be any down-side to buying a gramma and placing the adequate size base on top of it? (Meaning cutting a board the same length and width of my sub and placing that on top of the Gramma.)

Would this diminish the returns of the original product?
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post #738 of 1318 Old 07-24-2010, 04:48 PM
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Having a little over hang should not cause any sound issues. It may visually bother you. That is the reason I went the DIY route. As for cutting another piece of wood and placing it on top. I don't see any issues with that.
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post #739 of 1318 Old 07-24-2010, 05:26 PM
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Quote:
Originally Posted by Jrunr View Post

The only reason I really ask is because the Auralex gramma is about 1.5" too narrow for the sub I want to use it with. The great gramma would be WAY too big for my application so I was trying to go custom... That being said, would there be any down-side to buying a gramma and placing the adequate size base on top of it? (Meaning cutting a board the same length and width of my sub and placing that on top of the Gramma.)

Would this diminish the returns of the original product?

I did the same thing with a previous sub which overhung the subdude 2.5" front and back. The only issue could be if you had kids or pets that might wanna play it it as it will be a little less stable. If that's not a factor then no worries.
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post #740 of 1318 Old 07-24-2010, 08:46 PM
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For those of you who make custom subdudes, can you please post your pics? I am very curious to see what you have created.
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post #741 of 1318 Old 07-25-2010, 06:13 AM
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Quote:
Originally Posted by Jrunr View Post

For those of you who make custom subdudes, can you please post your pics? I am very curious to see what you have created.

Heres are pictures of my DIY Subdude. They where also in post #734. Just in case you missed them.
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post #742 of 1318 Old 07-25-2010, 08:42 AM
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Originally Posted by Secret Squirrel View Post

As for cutting another piece of wood and placing it on top. I don't see any issues with that.

I directly inquired about this from Auralex and their tech support answer was that they did not suggest it because the additional wood might interfere with the effectiveness of the GRAMMA or SubDude. If the subwoofer does not have feet and the bottom is flat then the GRAMMA should work fine. If the subwoofer has feet and is downward firing and those feet will not fit on top of one GRAMMA then you will need two of them, whether SubDudes or GRAMMAs. You can have a gap between two Auralex isolators that are side by side.
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post #743 of 1318 Old 07-25-2010, 10:27 AM
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Originally Posted by fookoo_2010 View Post

I directly inquired about this from Auralex and their tech support answer was that they did not suggest it because the additional wood might interfere with the effectiveness of the GRAMMA or SubDude. If the subwoofer does not have feet and the bottom is flat then the GRAMMA should work fine. If the subwoofer has feet and is downward firing and those feet will not fit on top of one GRAMMA then you will need two of them, whether SubDudes or GRAMMAs. You can have a gap between two Auralex isolators that are side by side.


i cant have two of them It would interfere with the look of the room. I guess I am going to have to either try the Wood on top of the Gramma or attempt to make my own... Suggestions?
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post #744 of 1318 Old 07-25-2010, 12:12 PM
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Quote:
Originally Posted by fookoo_2010 View Post

I directly inquired about this from Auralex and their tech support answer was that they did not suggest it because the additional wood might interfere with the effectiveness of the GRAMMA or SubDude. If the subwoofer does not have feet and the bottom is flat then the GRAMMA should work fine. If the subwoofer has feet and is downward firing and those feet will not fit on top of one GRAMMA then you will need two of them, whether SubDudes or GRAMMAs. You can have a gap between two Auralex isolators that are side by side.

Im really not here to dispute the information that you got from Auralex. If you would. Please explain why, in scientific terms how adding another piece of wood to eliminate over hang will negatively effect the Subdudes performance. The deck of a Subdude is made from MDF. If the OP where to add another piece of MDF on top. What is the issue? As long as the two pieces of wood don't resonate together from bass vibrations. The OP may need to cover the second piece of wood with some sort of material to make sure that the boards don't vibrate together. This seems like it should not happen very easily because of the subs weight. If your theory is correct then subs with extensive extra internal bracing and double thick baffles would cause issues. They are glue together in these instance. So it is a little different. But it works just the opposite. It adds strength and cuts down on vibration. Do you even use Subdudes, or constructed your own like I have? Of course Auralex would rather you use 2 Subdudes vs 1. They are a good company and I do like their products. This is not to bash Auralex.
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post #745 of 1318 Old 07-25-2010, 03:50 PM
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Originally Posted by Secret Squirrel View Post

Im really not here to dispute the information that you got from Auralex. If you would. Please explain why, in scientific terms how adding another piece of wood to eliminate over hang will negatively effect the Subdudes performance. The deck of a Subdude is made from MDF. If the OP where to add another piece of MDF on top. What is the issue? As long as the two pieces of wood don't resonate together from bass vibrations. The OP may need to cover the second piece of wood with some sort of material to make sure that the boards don't vibrate together. This seems like it should not happen very easily because of the subs weight. If your theory is correct then subs with extensive extra internal bracing and double thick baffles would cause issues. They are glue together in these instance. So it is a little different. But it works just the opposite. It adds strength and cuts down on vibration. Do you even use Subdudes, or constructed your own like I have? Of course Auralex would rather you use 2 Subdudes vs 1. They are a good company and I do like their products. This is not to bash Auralex.

That is what they replied. Just go onto the Auralex website and find tech support and ask your question about the board on top of the GRAMMA or SubDude via e-mail. I thought the same thing too, but ended up buying two GRAMMAs because my subwoofer is downward firing, wider than 23", and the feet had to be there to slightly elevate it from the floor. Or this could have been a bunch of hocus pocus, relative to the extra board.
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post #746 of 1318 Old 07-25-2010, 03:57 PM
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Originally Posted by Jrunr View Post

i cant have two of them It would interfere with the look of the room. I guess I am going to have to either try the Wood on top of the Gramma or attempt to make my own... Suggestions?

One inexpensive suggestion would be to decouple the subwoofer by raising it off of the floor and see how that sounds. You could use a small table that would hold it or go down to the local hardware store and buy four of those plastic coasters with plastic spikes in them to put below the feet of a sofa or couch, assuming that you have a carpeted floor.
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post #747 of 1318 Old 07-25-2010, 04:17 PM
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Originally Posted by fookoo_2010 View Post

That is what they replied. Just go onto the Auralex website and find tech support and ask your question about the board on top of the GRAMMA or SubDude via e-mail. I thought the same thing too, but ended up buying two GRAMMAs because my subwoofer is downward firing, wider than 23", and the feet had to be there to slightly elevate it from the floor. Or this could have been a bunch of hocus pocus, relative to the extra board.

Thanks for the suggestion of sending them an email. The issue really does not apply to me or my equipment anymore. There suggestion of using two Subdudes per sub would not fit in my space either. I have four subs co-located in my room. 2 Subdudes per sub would never work. I still think there answer is BS. Saving space is why I made my own. They are custom made to fit MY SUBS. Neither yourself or Auralex has given me or anyone else an explanation of how this scientifically would make a difference in performance. I don't expect graphs or numbers or anything complicated. Just a simple explanation of why.
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post #748 of 1318 Old 07-25-2010, 04:30 PM
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Well, I guess I am going to have to see how creative I can get I don't want to take away from the beauty of the subs and how they are integrated into my living room decor...
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post #749 of 1318 Old 07-25-2010, 04:44 PM
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Originally Posted by Jrunr View Post

Well, I guess I am going to have to see how creative I can get I don't want to take away from the beauty of the subs and how they are integrated into my living room decor...

DIY on!!!!! It's really not all that difficult. If you are interested in a design like mine. I will try to help out with any questions you may have. I give total credit to Auralex for the Subdude. I just modified their design to custom fit my subs and tried to make them look a little better.
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post #750 of 1318 Old 07-25-2010, 05:04 PM
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jrunr, you are getting seaton submersives, correct?

you will not need isolation... the submersives are inert... using an isolation pad is trying to solve a problem that doesn't exist in the slightest...

personal example...

my room in on the second floor of a 107 year old brick house. it has pine wood floors, nailed into the joists... things WANT to pick up physical vibrations in here...

my previous sub was (is, still have it) a paradigm servo15v2... no slouch in it's own right... stuffing a great gramma under it eliminated a lot of rattles in the room, due to decoupling the sub from the floor...

however, my submersive doesn't vibrate a BIT... there are no vibrations to transfer to the floor... i'm not unique in this... one of the things that "makes" a submersive is the inert cabinet....

i WOULD suggest you put them on furniture sliders until you get them basically where you want them... that makes them a LOT easier to move...

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