= Hifiman “Fuzzor” Mod = (Driver backwave felt damping modification)

[Pirakaphile]

But has anyone actually tried Dynamat?
Wondering the same thing...

No such thing as a cure for upgraditis. Or you've made some friends here and just can't bear to lose them!

 

[BeatsWork]

But has anyone actually tried Dynamat?

 
I think you just volunteered to test and report back 

 
But Dynamat is foam right?  Composition could make all the difference but see Dragon's experience below.
 

   
I have done my 3rd iteration of this mod so far, the first two were with Silverstone sound damping foam left over from a T50rp mod. I can tell you for sure that the thickness of the material makes all the difference between getting the signature natural sounding treble of the HE 500 and taming it too much. Best thing to reduce the thickness of foam, i have found, is to use fiskars scissors. It is sharp enough to cut the pieces precisely also; i can cut to less that half a millimeter with this pair of scissors.
 
My 3rd time around i stopped being lazy and found a Michael's near my house and got the stiffened felt jerg mentioned and my trebles are back to how they should sound out of the HE 500 without the "chaos" in the music that i feel the stock HE 500 has. I could not get the foams thin enough without ruining the adhesive side with the scissors, and it seemed they absorb too much of high frequency, so felt is definitely the way to go.
 

 

[Hansotek]

I think I'll be doing this mod this evening. Quick question: with using something like Dynamat instead of felt effective this modification one way or the other?

Oh goodness no! Dynamat is hardcore overkill and will make a huge mess! The felt is all you need.

 

[JoeDoe]

Oh goodness no! Dynamat is hardcore overkill and will make a huge mess! The felt is all you need.

Gracias!

 

[Hansotek]

 

Seriously there is no skill required other than patience and ability to measure    And it's no stress - you're just sticking adhesive felt on to a metal guard. Screw up a strip? Just peel it off and cut another.  Just skip the double shot Latte before starting ....

I'm a very hand's on person, so I doubt it'll be as difficult as I'm encouraging myself to think it is. Probably the hardest part will be actually finding the felt and a good knife to cut it.
Then I'll be off to find some material for the guard mesh on the outside, and that'll probably be more difficult.

This felt worked like a charm: http://www.amazon.com/gp/product/B0018N5W2Y

And get an Xacto knife with a nice, fresh blade to do it. It will be 1,000 x easier than any other option. You can get a good one for $5-$10.

 

[guido]

would this felt be suitable?
 
http://www.amazon.co.uk/dp/B008A5OTO0/ref=wl_it_dp_o_pC_nS_ttl?_encoding=UTF8&colid=EH33DLJT0M0Z&coliid=I1ZV7M0RC0L3T5

 

[guido]

What is the consensus on 3mm thick rigid felt?
 
I have 2 sheets in my garage

 

[Hansotek]

would this felt be suitable?

http://www.amazon.co.uk/dp/B008A5OTO0/ref=wl_it_dp_o_pC_nS_ttl?_encoding=UTF8&colid=EH33DLJT0M0Z&coliid=I1ZV7M0RC0L3T5

That looks like the stuff I used.

If anybody is out there wondering "how much felt do I actually need to do this?" One standard 9" x 12" sheet is more than enough. I used MAYBE 20% of a sheet to do the whole thing.

 

[guido]

how thick is it?

 

[Hansotek]

how thick is it?

I don't know off hand. Not thick enough to be rigid. Like 1mm maybe? I'm not really sure.

 

[guido]

I don't know off hand. Not thick enough to be rigid. Like 1mm maybe? I'm not really sure.

Ok, thanks...so the 3mm thick one I have here is not really suitable

 

[Pirakaphile]

 
Ok, thanks...so the 3mm thick one I have here is not really suitable

3mm seems a little thick, it won't have to be that thick, but it shouldn't cost that much to get another thinner sheet

 

[atubbs]

Just finished applying the felt; got some red 1mm stiff adhesive variety from Amazon. Thank you for the guide; been happy with the results so far; tones things down a bit on the high end without the giant pie wedge of doom, cotton, or original grille...
 

 
Offset tweezers were a godsend for my fat useless sausages...
 

 

[JoeDoe]

Looks great man ^^^

 

[BeatsWork]

  Just finished applying the felt; got some red 1mm stiff adhesive variety from Amazon. Thank you for the guide; been happy with the results so far; tones things down a bit on the high end without the giant pie wedge of doom, cotton, or original grille...
 

 
Offset tweezers were a godsend for my fat useless sausages...

 
You got lucky. Whoever the tech was that assembled my set used a prodigious amount of glue where the cross bar is attached at sides so felt didn't fit quite so neatly.  I probably could have dremmeled it clean but didn't think the difference was worth having to mask the driver from dust ...
 
How's the red felt look with grills? 

 
FYI - for anyone yet to do mod - note that the plastic outer ring comes off with 4? screws and IMHO made it a lot easier to work with.