Author Topic: Subwoofer isolation , spikes , footers, Auralex Subdude  (Read 5199 times)

Offline ho_kuku

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Re: Subwoofer isolation , spikes , footers, Auralex Subdude
« Reply #30 on: May 27, 2019, 09:22 »
I use dd3 underneath my bookshelf speakers (i.e. between speakers and speaker stands) - improved clarity and tonality too. Not sure what technology is behind it but it definitely works well for me.

Did an experiment with dd3 too - placed it in the middle between speakers with the side without wordings facing upwards. I must be crazy but music tightened up especially vocal. I need to go for my ear checkup.

If you have the dd3 - please do try it and tell me I am not insane :0
« Last Edit: May 27, 2019, 09:41 by ho_kuku »

Offline ronildoq

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Re: Subwoofer isolation , spikes , footers, Auralex Subdude
« Reply #31 on: May 27, 2019, 13:13 »
I use dd3 underneath my bookshelf speakers (i.e. between speakers and speaker stands) - improved clarity and tonality too. Not sure what technology is behind it but it definitely works well for me.

Did an experiment with dd3 too - placed it in the middle between speakers with the side without wordings facing upwards. I must be crazy but music tightened up especially vocal. I need to go for my ear checkup.

If you have the dd3 - please do try it and tell me I am not insane :0

I don’t think u r crazy! It works !

I’m also struggling to understand the physics behind, measured response doesn’t tell me anything , or maybe I should be measuring something else, no idea

If everyone seems to be experiencing the improvement, that means it does work to a certain extend

I was speechless yesterday when we tested it to be working effectively, just wow”ed .. no words to explain

Offline ho_kuku

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Re: Subwoofer isolation , spikes , footers, Auralex Subdude
« Reply #32 on: May 27, 2019, 15:35 »
I don’t think u r crazy! It works !

I’m also struggling to understand the physics behind, measured response doesn’t tell me anything , or maybe I should be measuring something else, no idea

If everyone seems to be experiencing the improvement, that means it does work to a certain extend

I was speechless yesterday when we tested it to be working effectively, just wow”ed .. no words to explain

I think I took an experimental approach
I had 1 dd3 sitting by itself between my 2 speakers. (center position)
Nothing on the dd3 - the dd3 has the wordings side facing downwards

By doing this alone - vocal and imaging tightened. Just a footer sitting between the speakers having this effects. I think I am nuts. Please - for those with dd4 or sp40 - can u try that out and tell me I should visit the doctor?

Offline Audiolab

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Re: Subwoofer isolation , spikes , footers, Auralex Subdude
« Reply #33 on: May 27, 2019, 16:44 »
Not everything can be explain by measurement sometimes. For me, I only trust my ears. If they sound good, the product works. No need to care about other reviews or etc. Its my system and I am listening to it, so I let my ears decide!

I don’t think u r crazy! It works !

I’m also struggling to understand the physics behind, measured response doesn’t tell me anything , or maybe I should be measuring something else, no idea

If everyone seems to be experiencing the improvement, that means it does work to a certain extend

I was speechless yesterday when we tested it to be working effectively, just wow”ed .. no words to explain

Offline Hass

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Re: Subwoofer isolation , spikes , footers, Auralex Subdude
« Reply #34 on: May 27, 2019, 16:55 »
I think I took an experimental approach
I had 1 dd3 sitting by itself between my 2 speakers. (center position)
Nothing on the dd3 - the dd3 has the wordings side facing downwards

By doing this alone - vocal and imaging tightened. Just a footer sitting between the speakers having this effects. I think I am nuts. Please - for those with dd4 or sp40 - can u try that out and tell me I should visit the doctor?

Yes, the sound changes with anything u introduce in your room. That's how acoustic treatment and other "black magic" products like ASI cups, sugar cubes, Argent room lens works.

Online rayleh

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Re: Subwoofer isolation , spikes , footers, Auralex Subdude
« Reply #35 on: May 27, 2019, 16:57 »
Of course, it is the most important that we are happy with our purchases since it is our $. However, we also need to ask ourselves does post purchase rationalization comes into play at times? No offence.

Offline Hass

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Re: Subwoofer isolation , spikes , footers, Auralex Subdude
« Reply #36 on: May 27, 2019, 17:07 »
Not everything can be explain by measurement sometimes. For me, I only trust my ears. If they sound good, the product works. No need to care about other reviews or etc. Its my system and I am listening to it, so I let my ears decide!

Yeah, I recall buying a power cord for my CDP that sounds good, actually great to me. Went to a shootout session, most prefer other power cords. I'm still using that PC till now. Let your ears decides what they like to hear.

Offline pcking

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Re: Subwoofer isolation , spikes , footers, Auralex Subdude
« Reply #37 on: May 28, 2019, 08:31 »
Hi Ron,

In my own opinion, SP-40 is most useful when used under equipment "upstream" of the chain. In your case, it's your Oppo 205.
But I noticed did you put DD-3 under the SP-40 ?

DD-3 was originally designed for placement underneath bookshelf speakers. So my take is DD-3 works best with items that have lateral vibrations. In HT case, the sub woofer.

As for how to place these footers, if you have bought them from the local dealer, I believe he would have already shared his findings on the best ways to use them.

With the SP-40, realism and emotions get through to you and hit your soul.  ;D

Think we are OT here.   :P

PcKing, what benefits did u notice with these footers ? Improved resonance? Where did you place them and how did u place it ?

We placed it under Oppo 205 and tested

I noticed the vocals were much improved, less smearing, better control for imaging, can hear a clear seperation of all the instruments playback, especially those Chinese type of musical instruments ...

Couldn’t believe it was so good, but this one was very obvious, with and without , instantly we could all tell... can’t believe this SP-40

🤔 still trying to figure out the physics behind...
« Last Edit: May 28, 2019, 08:42 by pcking »
"The worse of the two is he who, when abused, retaliates. One who does not retaliate wins a battle hard to win."

Offline ronildoq

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Re: Subwoofer isolation , spikes , footers, Auralex Subdude
« Reply #38 on: May 28, 2019, 08:50 »
Hi Ron,

In my own opinion, SP-40 is most useful when used under equipment "upstream" of the chain. In your case, it's your Oppo 205.
But I noticed did you put DD3 under the SP-40 ?

DD3 was originally designed for placement underneath bookshelf speakers. So my take is DD3 works best with items that have lateral vibrations. In HT case, the sub woofer.

As for how to place these footers, if you have bought them from the local dealer, I believe he would have already shared his findings on the best ways to use them.

With the SP-40, realism and emotions get through to you and hit your soul.  ;D

Think we are OT here.   :P


Lol, it’s ok, forum is for us to share our findings, we are learning Everyday.

I had to put the ball bearing base footers on the amp, the Oppo sits on the power amp, concerned the rubber stuff beneath it will be exposed to heat from the amplifier , hence this approach, though the class D amplifier is not as hot, but just not risking it

I’ll probably try the dd3 beneath the centre speakers and experiment again, I will have to decouple the centre channel speakers when placing them behind the AT screen, (upcoming project) to have projector

The purpose of decoupling is to prevent the centre speaker energy transmitting to the wall, so it’s gonna come in handy this time for my centre speaker when it’s behind the AT screen

So far so good, nice improvement coming from the super tweeters after placing them below it

I’ve tried different footers isolation etc, some not as effective, this one is quite good the divini, Definitely not snake oil...


Offline Djblackfm

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Re: Subwoofer isolation , spikes , footers, Auralex Subdude
« Reply #39 on: June 22, 2019, 23:51 »
I've joined the group of footers. Well I'm honestly a non believer for footers. Whenever I received it, I will just chuck it one side or I would just thrown it away.

So what's made me to try this? As I have visited brother NGSK place. As for previous & after adding the footers. It did improve on his setup. Another Brother, Ronildoq nice, kind & knowledgeable person. With his influence as well. So it let me thinker whether really footers makes a difference.

So decided to try out this footers. After playing around for 2hours of music. My findings are clarity improved, mid range did improved.

Background of this science I'm really not sure what happened. Whether my mind playing tricks or probably bluffing myself because I spend money it should sound nice. If asked me honestly it's really worth the price to get.

Hope I did not offend anyone or my findings. Just my thoughts to share with.

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Offline winwinc81

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Re: Subwoofer isolation , spikes , footers, Auralex Subdude
« Reply #40 on: June 22, 2019, 23:54 »
Nice footers! Time to dig out my "Chuck one side" footers that apollon uses to see if I can help any of my gears change its shoes.

Offline ronildoq

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Re: Subwoofer isolation , spikes , footers, Auralex Subdude
« Reply #41 on: June 23, 2019, 09:37 »
I am now diving deeper into the topic of coupling and decoupling recently, after experiencing the improvement with the footers. It has been around for ages, just that I haven’t had the time Nor means to delve into the subject as it’s pretty complicated.

There are basically three types, isolation, coupling, decoupling , a lot of it is related to vibration and the amount of kinetic energy in that vibration , and how are our equipment connected/sitting on it.

Here is a quick video that helps explains a lot of things in a few minutes. It’s nice to see so many videos these days on YouTube that helps us understand lotsa things


<a href="http://www.youtube.com/v/dW9-r83IvhI&fs=1" target="_blank" class="new_win">http://www.youtube.com/v/dW9-r83IvhI&fs=1</a>


<a href="http://www.youtube.com/v/SRbFxgezAX0&fs=1" target="_blank" class="new_win">http://www.youtube.com/v/SRbFxgezAX0&fs=1</a>


Recently after my exercise conducting amplifier comparisons between emotiva monoblocks, ati525 vs Apollon amplifier, I’m now able to apprehend why the Apollon amplifier sounded cleaner and better. They had these footers that the other two amp do not



Noticed that Apollon amplifier has a small rubber ring beneath it, similar to the divini footers I was using. This is where decoupling happens and the Apollon always sounded better, cleaner, clearer in the midrange 

Though the emotiva monoblocks has lotsa class A /AB weight, it never sounded as clean as the Apollon. It had a distinct disadvantage in the footers area

This is why I’m now trying to get into the bottom of the advantages of decoupling

Once I’m done with a reasonable footers on the amp, I will do a comparison again



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Offline winwinc81

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Re: Subwoofer isolation , spikes , footers, Auralex Subdude
« Reply #42 on: June 23, 2019, 09:51 »
Nice! I was reading about the THD + N last night and I discovered that the ratio is lower from one compared to another. This also a part of factor as well?

Offline ronildoq

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Re: Subwoofer isolation , spikes , footers, Auralex Subdude
« Reply #43 on: June 23, 2019, 10:45 »
Nice! I was reading about the THD + N last night and I discovered that the ratio is lower from one compared to another. This also a part of factor as well?

Those numbers can be provided but unless someone verifies it, we will never know. But the Apollon amplifier is good, no doubt. With the new technology implemented on their amps and components, they will have an advantage

Offline winwinc81

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Re: Subwoofer isolation , spikes , footers, Auralex Subdude
« Reply #44 on: June 23, 2019, 11:02 »
Yeah no doubt about it! Enjoyed every moment as well!