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Auralex Subdude Owners Thread - Page 26

post #751 of 1311
my pb12-nsd would vibrate quite a bit and you could feel it through out the sofa (near field placement). my new pb12-plus doesn't vibrate nearly as much so i don't think this would be worth it for me....
post #752 of 1311
Quote:
Originally Posted by ccotenj View Post

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...

Thanks for the info here. I don't know if I need isolation, or just something to get the subs up off the floor, but they do sound better (subjectively) when they are up off the floor. My subs are on opposite sides of the room, and they sound great! I have a single story home, with carpet over slab, so I really cant explain it. Even my friends noticed a difference. Even though they don't seem to shake the couch, as much, they sound a little tighter and more articulate. Right now I just have them sitting on a platform of wood and the foam that came with the subs when shipped. I was thinking that it was the placebo effect, but my buddy even noticed a difference and asked me how I "tuned" them to sound better. lol

I can tell you this though; my sub search is finally over!
post #753 of 1311
Quote:
Originally Posted by Jrunr View Post

Thanks for the info here. I don't know if I need isolation, or just something to get the subs up off the floor, but they do sound better (subjectively) when they are up off the floor. My subs are on opposite sides of the room, and they sound great! I have a single story home, with carpet over slab, so I really cant explain it. Even my friends noticed a difference. Even though they don't seem to shake the couch, as much, they sound a little tighter and more articulate. Right now I just have them sitting on a platform of wood and the foam that came with the subs when shipped. I was thinking that it was the placebo effect, but my buddy even noticed a difference and asked me how I "tuned" them to sound better. lol

I can tell you this though; my sub search is finally over!

Your subs sounding better is not in your head. De-coupling them from the floor will make them sound tighter. Even on a slab or concrete floor. Some think that just because concrete is hard it does not resonate with strong bass. It has been proven that concrete as hard as it seems, does carry bass vibes.
post #754 of 1311
^^^

if the cabinet is not producing physical vibrations, de-coupling it from the floor will have no effect...
post #755 of 1311
Quote:
Originally Posted by ccotenj View Post

^^^

if the cabinet is not producing physical vibrations, de-coupling it from the floor will have no effect...

I don't agree. My sub cabinets where not physically vibrating and decoupling them made a difference in the bass. Just because your hand can't feel the vibration on the outside of the cabinet does not mean then there are not vibrations present. And if you mean that the sub is vibrating itself across the floor, the OP has bigger problems than just decoupling.
post #756 of 1311
you are entitled to disagree if you like...

- if de-coupling your sub from the floor made a difference, it IS because your cabinet was producing vibrations... de-coupling the sub from the floor will do ZERO amount of good in terms of ameliorating issues caused by sound waves coming from the sub... it can't...

- trust me. the submersive IS inert...
post #757 of 1311
Im not disagreeing with you that the Submersive cabinet has an inert quality. Im glad you told me that. Good information. The fact that the OP stated that he noticed a difference in bass quality when he temporarily decoupled the subs from the floor makes me think that he still could benefit from using a Subdude of some sort. I was also skeptical about using a decoupling device. Then I did some A&B testing with others and they also noticed the difference. My test subjects really had no idea what I was doing. They just liked the sound better with the Subdudes installed. I think that says something.
post #758 of 1311
I dont think this is a question regarding the quality of the subs. They are awesome! Myabe it is my psychosis...lol Regardless, I just seem to think they sound better that way. I have done this with all my subs, so maybe it is the placebo effect, but I did have my friend comment on the difference... As far as totally, decoupling it... I dont think I did. I just put it on a board on top of some packing foam... lol Kinda ghetto, but it will serve its purpose until I can make some sort of riser that accentuates the beauty of the Espresso Submersive.
post #759 of 1311
Quote:
Originally Posted by Secret Squirrel View Post

Im not disagreeing with you that the Submersive cabinet has an inert quality. Im glad you told me that. Good information. The fact that the OP stated that he noticed a difference in bass quality when he temporarily decoupled the subs from the floor makes me think that he still could benefit from using a Subdude of some sort. I was also skeptical about using a decoupling device. Then I did some A&B testing with others and they also noticed the difference. My test subjects really had no idea what I was doing. They just liked the sound better with the Subdudes installed. I think that says something.

i have no skepticism whatsoever about using a decoupling device... if you notice in my first post to jrunr, i noted that using one underneath by previous sub produced positive results... i'm in no way discouraging people from using a subdude, when one is needed... as a matter of fact, i'm a subdude enabler...

yes, it says something... it says it works for you, because you effectively decoupled vibrations from your sub to the floor... that's exactly what i would expect, as that is my experience with it as well...

as far as elevating on something to raise it off the floor... i'd be hard pressed to see how that would effect the sq in any more than a trivial manner...
post #760 of 1311
Installed the two GRAMMA's under my JL F113's this Saturday. Made some pretty nice improvements over what I had previously felt as superb bass reproduction in my home. As noted, my subs are on the second floor of our home in the family room on carpeted flooring. The JL's feet had sunk into the carpet/padding so the bottom of the high gloss cabinets were resting on the carpet. The bottom end is more coherent, deeper, more tuneful (if it could have ever been considering how good it was before), faster and integrated with the mains even more than before. Midbass region is cleaner/clearer and the bottom end more dynamic. Sound field has apparently increased a bit more as well. Watching The Book of Eli on Saturday evening after running the ARO program again was a real revelation.

So far, in only a few days comparison, I would give the bases a preliminary enthusiastic thumbs up. I will have to live with them over time to determine their true long term mettle and how they perform on a variety of input material.
post #761 of 1311
Anybody got any other observations, rebuttals, comments, thoughts, generalities, etc.????
post #762 of 1311
There's almost 800 posts worth of observations, generalities, comments and thoughts.
post #763 of 1311
Yeah but other than that, are there any other???
post #764 of 1311
Quote:
Originally Posted by nathan_h View Post

Yeah but other than that, are there any other???

The foam is quite foamy.
post #765 of 1311
Quote:
Originally Posted by oddeofile View Post

Anybody got any other observations, rebuttals, comments, thoughts, generalities, etc.????

I have a trusty old Velodyne FSR15 in a tough room with respect to acoustics. And, its on carpet over a hardwood floor.

I put up as much acoustic treatment as i could get past my wife. Everyone said... hmmm... maybe that made a difference (it did, but not a lot). I got an Integra Pre/Pro with Audyssey XT. That made more of a difference to my ear. But, again friends said, "maybe", and continued to think I'm just a bit crazy.

I put a SubDude under the sub a couple of weeks ago and everyone (friends, me, etc) said it was a definite improvement - greater than anything else I'd done. That $60 was a great investment. Bass is tighter, individual low frequencies are more distinct, and I actually "feel" the impact more as a bass guitar walks down into the lowest notes. (Of course, I reran Audyssey).

I'm an engineer and tend to agree academically with those that have said if the cabinet isn't vibrating at all, then isolation can't help. Having said that, I ultimately trust my ears (especially when non-audiophile friends agree, which they rarely do... ha ha). To me, the SubDude's $60 price tag makes it a viable thing to try for anyone who thinks it "might" help them.
post #766 of 1311
yup, it's amazing how much better you can "hear/feel" things when you eliminate the physical vibrations from the equation...

once you eliminate the "physical" from the equation, room modes dominate when it comes to what you hear/feel in the low bass frequencies... and raising the sub 2 inches off the floor would make, at best, a trivial impact on that...
post #767 of 1311
So, I ordered two Gramma's. I figure it will atleast be a fun, subjective test. Besides, I got them both for $100 shipped from Amazon. Let's face it, I have definitely spent more on less... lol
post #768 of 1311
See? My comment worked... it got the thread moving again.
post #769 of 1311
Just got a subdude. For those of you who use Audyssey would you suggest rerunning it after placing the sub on the subdude.
post #770 of 1311
Quote:
Originally Posted by bonscott View Post

Just got a subdude. For those of you who use Audyssey would you suggest rerunning it after placing the sub on the subdude.

Yes.
post #771 of 1311
Anyone who has done DIY, any ideas where to get some cheap foam that would work?
post #772 of 1311
Quote:
Originally Posted by Tulpa View Post

Anyone who has done DIY, any ideas where to get some cheap foam that would work?

I used anti fatigue foam interlocking floor mats. They can be purchased almost anywhere. I did have to cut them up to work for my build. If you look back a few pages you can see the pictures of my DIY Subdudes. Check out post #731 or #734 The foam can only be seen if the Subdudes are flipped over. When the sub is on the platform the foam is completely hidden.
post #773 of 1311
Someone recommended sanding sponges, and they work great. I picked up ten for $17, and stacked two on each corner and two in the center of a plank of MDF. A carpet section sits on that, and the sub on top. I think it does reduce the incidental vibrations from the cabinet from hitting the floor.
post #774 of 1311
I just did a google shopping search for the platfoam, and I found this kit of 24, 2in x 4in x 4ft. for $13. I just made an order... DIY here I come... I hope it's not some pricing error, all the other kits go for $300

http://www.bhphotovideo.com/c/produc...am_Blocks.html
post #775 of 1311
Quote:
Originally Posted by Brasky View Post

I just did a google shopping search for the platfoam, and I found this kit of 24, 2in x 4in x 4ft. for $13. I just made an order... DIY here I come... I hope it's not some pricing error, all the other kits go for $300

http://www.bhphotovideo.com/c/produc...am_Blocks.html

I was looking to purchase these when I was building my DIY Subdudes. They are usually $299 a set. Way to expensive. So I used something else. If the price that was on your link is for real. That's almost to good to be true. Please report back to let us know if the price on the link is good. I might consider ordering a set. Usually things that seem to good to be true are not true.
post #776 of 1311
Quote:
Originally Posted by Secret Squirrel View Post

I was looking to purchase these when I was building my DIY Subdudes. They are usually $299 a set. Way to expensive. So I used something else. If the price that was on your link is for real. That's almost to good to be true. Please report back to let us know if the price on the link is good. I might consider ordering a set. Usually things that seem to good to be true are not true.

Search for "AUPC" at B&H - they also have the ~$300/pack foam, which is listed as a proprietary high-density foam, and includes the adhesive tubes. The cheap ones aren't listed as high-density, and don't include the adhesive if you check the listing text carefully.

They should really change the picture to not show the adhesive, but other than that, it's an accurate listing. I know of B&H from the photography world which has more than its fair share of scummy vendors, and they are well known/liked/trusted there.
post #777 of 1311
Quote:
Originally Posted by Brasky View Post

I just did a google shopping search for the platfoam, and I found this kit of 24, 2in x 4in x 4ft. for $13. I just made an order... DIY here I come... I hope it's not some pricing error, all the other kits go for $300

http://www.bhphotovideo.com/c/produc...am_Blocks.html

I ordered a 2 boxes of these and they are not what is advertised on the link.
Each block is about the size of a deck of cards. Now I have 48 of them. They are the consistency of the Mopads. If you put enough of them under a sub they might hold the weight. I will probably just pack them away for some later use. Four of them should work fine under book shelf speakers. So I might use them to isolate all of my surrounds that now have rubber pads under them. They might come in handy. It was to good to be true as I stated above. If you want the true isolation platfoam blocks it's going to cost $299. They do sell them on another part of their site. Another forum member posted them. I could not find the real platfoam on their site when I made the order. Live and learn. Not really complaining. It was only about $35 with shipping. I have a lot of Auralex products. Now I have a few more.
post #778 of 1311
Guitar Center is having a bogo half off sale this week for the Gramma. It works out with tax to 40 each.
I know this is lazy but could someone tell me if there is any benefit to using these under your audio rack ? I would purchase more if there is any.
post #779 of 1311
They must be pretty good, I made one out of some shipping foam and it worked perfect, the real deal has got to be unreal !
post #780 of 1311
Soooo what exactly is the subdude?

My sub is in the basement, so it has a concrete slab. Right now I put the sub on top of a box that's maybe 3-4 inches high in case the basement floods, and to be able to put it closer to the wall. Would the subdude do anything different?

Would it be better to raise the subwoofer even higher off the ground, so it's at ear level?
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