Feet for subwoofer

gasolin

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I have ordered this feet for my small nad d3020 and denon dra f109 http://www.mains-cables-r-us.co.uk/hi-fi-equipment-supports/278-deflex-polipods-isolation-feet.html (not this place but from a danish store) for about 26€ which i think is okay since i can use it for 2 amps.

The place where i ordered the polipods they didn't have the big superpods and are not gonna get any (might be because they don't make them any more http://www.milty.co.uk/), i have a big and heavy tile (40x40cm , 4.5 cm high) and on top my dali e 12 f subwoofer with spikes.

Would some polipods under my tile be an advantage for my subwoofer ?

Where can i get them at a resonable price, i think 35€ without delivery from the first link is a bit to much.

Can i use these audioquest rubber feet that i have 7 of in a good condition? (don't know there weight limited, they are old, about 18-19 years old)

http://peecee.dk/upload/view/406910 (picture)

Other surgestion for feet under my tile, if you would recommend me to use some?
 

Glacialpath

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Sorry if this is a silly question but what exactly are you trying to achive with you slab/tile and these feet for your subwoofer. If it's isolation then make sure your sub works best isolated. I'm sure you already have.

By isolating it you might be forfitting some of it's sonic potential.
 

Selby

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Hi,

Have a look on Amazon for some vibration pads made for large appliances such as washing machines and such like. They may do the job that you are trying to achieve.
 

gasolin

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Better sound then using spikes (sometimes special rubber,foam,silicone feet are better then spikes)

http://www.sonicdesign.se/sdfeet.html

I only use a big (heavy) tile because it's a cheap way to protect a wooden floor if you use spikes on a speaker (s)
 

Glacialpath

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gasolin said:
I only use a big (heavy) tile because it's a cheap way to protect a wooden floor if you use spikes on a speaker (s)

Ah yes good point. I have the same issue but my floor is only laminate. I would still suggest trying your sub directly on the floor. You might be supprised. I would be interested to know which is better for you. Using the spikes or directly on the floor.
 

andyjm

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gasolin said:
Spikes on my subwoofer and my audioquest feet (9) under the tile

You appear to be trying to both couple and isolate at the same time. While it may be interesting, it is unclear what you are trying to achieve.

What is the problem you have? and what is your plan to address this?
 

gasolin

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Just having a subwoofer on a floor isn't perfect, so i used the spikes that came with the subwoofer, which is better then nothing, i have a wooden floor so i bought a cheap tile to awoid holes i my floor.

Some say spikes isn't perfect http://www.sonicdesign.se/sdfeet.html so i wanted to have something under my tile,speaker, since the bracket under my subwoofer is 38mm high i had to have something higher then 38 mm the deflex superpods are only 40mm and a bit expensive beacuse the don't have any in demark (in uk they had), had som old audioquest rubber feet, found a bit more and had 9 rubber feet (not high enough to use under the subwoofer with the bracket) so i used them under the tile and got a more controlled,precise, less boomy bass, not shure if the sd damping feet would give me an even better sound then the audioquest rubber feet, but the audioquest feet are designed to reduce unwanted vibrations.

I don't have perfect room acoustics so i didn't want to just have my subwoofer on my wooden floor with nothing high tech feet, tile,stands under it.

Since the subwoofer have a bass port under the subwoofer i can't use some stand like the isoacoustics for subwoofers, because it would increase the distance from the bass port to the floor,tile,(low rubber feet without the bracket would decrease the distance from the bass port to the floor,tile) also stands would have an negative influence on the sound because of it's surface, if i would use stand like the ones from isoacoustics http://www.isoacoustics.com/isol8r200sub.php or http://www.isoacoustics.com/isol8r430_studio_monitor.php.

Have thought about bass traps to optimise the bass, but they are a bit expensive and big (not gonna make my own)
 

gasolin

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CnoEvil said:
If your wooden floor is suspended, the best (vfm) isolation device that I've come across is the Auralex Gramma.

No idea if my floor is suspended (i guess it is), have seen the Auralex Gramma, i did how ever read about the finish being very poor (can't find the link).

The tweak with the rubber feet tile,spike was less then 3€ it was almost for free and that it in fact made a difference, i can't complain about that
 

CnoEvil

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gasolin said:
No idea if my floor is suspended (i guess it is), have seen the Auralex Gramma, i did how ever read about the finish being very poor (can't find the link).

The tweak with the rubber feet tile,spike was less then 3€ it was almost for free and that it in fact made a difference, i can't complain about that

The floor is suspended, if it's not laid over concrete and so has a space under the floorboards (which resonates).....a problem I have in spades!

The finish of the Gramma is, shall we say, utilitarian...but there are ways to camouflage that.

Experimentation is the key, so if you are happy with the improvement, that's all that really matters.
 

super

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I use the Auralex Gramma which my two M & K 350 subs sit on and i had to turn the volume down when installed, bringing less stress for them to drive...well pleased.
 

gasolin

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CnoEvil said:
gasolin said:
No idea if my floor is suspended (i guess it is), have seen the Auralex Gramma, i did how ever read about the finish being very poor (can't find the link).

The tweak with the rubber feet tile,spike was less then 3€ it was almost for free and that it in fact made a difference, i can't complain about that

The floor is suspended, if it's not laid over concrete and so has a space under the floorboards (which resonates).....a problem I have in spades!

The finish of the Gramma is, shall we say, utilitarian...but there are ways to camouflage that.

Experimentation is the key, so if you are happy with the improvement, that's all that really matters.

I don't think it's suspended also if i bout the auralex gramma i have to use with the small width of 15" because the place where i have my subwoofer isn't wide enough for the lengh of 23" (i just have to turn it 90 degresse)
 

CnoEvil

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gasolin said:
I don't think it's suspended also if i bout the auralex gramma i have to use with the small width of 15" because the place where i have my subwoofer isn't wide enough for the lengh of 23" (i just have to turn it 90 degresse)

The Subdude is smaller, (slightly) better finished, but twice the price.
 

gasolin

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CnoEvil said:
gasolin said:
I don't think it's suspended also if i bout the auralex gramma i have to use with the small width of 15" because the place where i have my subwoofer isn't wide enough for the lengh of 23" (i just have to turn it 90 degresse)

The Subdude is smaller, (slightly) better finished, but twice the price.

Havn't looked for the price so i dont know what it costs, Auralex Gramma costs just under 60€ at thomann.de.

As you can see http://www.areadvd.de/images/2013/Dali_ZensorSet/Dali_Zensor_SubE-12F_Unterseite.jpg the bottom of my subwoofer has this gray bracket (or what evet you would call it), there is a very small part of the subwoofer that touches the auralex subwoofer feet,pad, instead of the whole bottom of the subwoofer, if i buy the feet what's the best way of putting the subwoofer on the feet,pad,with or without the very small rubber feet or even spikes?

Update i now have looked for prices (have to look a a european site), don't know why you say it's twice the price?

On amazon it's cheaper then the auralex gramma (not at all twice the price)

http://www.amazon.com/Auralex-SubDude-II-Subwoofer-Isolation-Platform/dp/B00DI5AXNI

http://www.amazon.com/Auralex-GRAMMA-Acoustic-Isolation-Charcoal/dp/B0002D0B4U/ref=sr_1_1?s=musical-instruments&ie=UTF8&qid=1402239788&sr=1-1&keywords=auralex+gramma
 

Phileas

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CnoEvil said:
If your wooden floor is suspended, the best (vfm) isolation device that I've come across is the Auralex Gramma.

You can't isolate the floor from the pressure waves created by the motion of the speaker cones.
 

CnoEvil

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Phileas said:
CnoEvil said:
If your wooden floor is suspended, the best (vfm) isolation device that I've come across is the Auralex Gramma.

You can't isolate the floor from the pressure waves created by the motion of the speaker cones.

No maybe not, but I can tell you that in my case, by isolating my front Speakers and Sub from direct contact with the floor, it made a dramatic difference to the quality of the bass.
 

gasolin

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I could also buy this one if i can find it somewhere cheap in europe http://www.sweetwater.com/store/detail/SubDude/ my subwoofer is 370x340x380mm where the subdude/ampdude is 15x15" (15" is 381mm) so that would bee the perfect size.
 

CnoEvil

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When I got mine, the Gramma was about £35 and the Subdude about £60.

BTW. I'm not trying to push you into buying it, just pointing out options that made a good difference for me.
 

gasolin

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I don't know something you have to try it your self to find out if it works for you.

It's just that i only seem to be able to find it places outside of europe where it costs 50$ (with delivery,tax and so on it's expensive)
 

CnoEvil

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FWIW. I think if your floor is not suspended, it is unlikely to be worth spending the money.

I had an ingrained problem that needed sorting.
 

andyjm

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gasolin said:
Just having a subwoofer on a floor isn't perfect, so i used the spikes that came with the subwoofer, which is better then nothing, i have a wooden floor so i bought a cheap tile to awoid holes i my floor.

Some say spikes isn't perfect http://www.sonicdesign.se/sdfeet.html so i wanted to have something under my tile,speaker, since the bracket under my subwoofer is 38mm high i had to have something higher then 38 mm the deflex superpods are only 40mm and a bit expensive beacuse the don't have any in demark (in uk they had), had som old audioquest rubber feet, found a bit more and had 9 rubber feet (not high enough to use under the subwoofer with the bracket) so i used them under the tile and got a more controlled,precise, less boomy bass, not shure if the sd damping feet would give me an even better sound then the audioquest rubber feet, but the audioquest feet are designed to reduce unwanted vibrations.

I don't have perfect room acoustics so i didn't want to just have my subwoofer on my wooden floor with nothing high tech feet, tile,stands under it.

Since the subwoofer have a bass port under the subwoofer i can't use some stand like the isoacoustics for subwoofers, because it would increase the distance from the bass port to the floor,tile,(low rubber feet without the bracket would decrease the distance from the bass port to the floor,tile) also stands would have an negative influence on the sound because of it's surface, if i would use stand like the ones from isoacoustics http://www.isoacoustics.com/isol8r200sub.php or http://www.isoacoustics.com/isol8r430_studio_monitor.php.

Have thought about bass traps to optimise the bass, but they are a bit expensive and big (not gonna make my own)

Ok. There are two reasons to fiddle about with speaker (or sub) feet, first is to give the speaker a firm support so it doesn't wobble about as the bass cone moves in and out, the second is to stop vibrations in the speaker enclosure feeding through the feet and exciting a resonant surface like a suspended wooden floor.

The two requirements are clearly inconsistent, you can't do both.

In your case, a downward firing sub will excite the floor no matter what feet you put under it. My guess is that (like most people) you have room acoustic problems. Your choice is to either fix the room acoustics (you dont fancy bass traps), or to try some form of room equalisation. My system sounded dreadful until I incorporated LF room equalisation.
 

gasolin

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I do fancy bass traps but one bass trap on thomann.de is almosts 100€ http://www.thomann.de/gb/hofa_basstrap_baby_creme.htm don't want to make my own, this one is not fancy and is not getting good rating http://www.thomann.de/gb/auralex_acoustics_12_cornerfill_charcoal.htm.

Have asked for som room tretament for better sound but spending 100€ is way to much cause i atleast need 2 (can't imagine 1 is enought) and if i could find somting white for the walls i could use non glue,screws mabye som velcro or blue tack thing i guess it's no less the 200€

This Acoustic Weaves 3DTiles (made in usa and the nederlands)

https://www.google.dk/search?q=Acoustic+Weave+3D+Tiles&safe=off&tbm=isch&tbo=u&source=univ&sa=X&ei=XbWVU7bKLqrnygOcjoB4&ved=0CDAQsAQ&biw=1262&bih=927 is Designed to diffuse sound, reduce acoustic glare and standing waves, you get 12 units Length: 12 in / 30.5 cm Width: 12 in / 30.5 cm Height: 2.25 in / 5.7 cm Thickness: .04 in / 1 mm for only 60€,49£ (i guess it's without delivery), but i don't think that would be something for me, although i have thought about it because of the very reasonable price
 

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