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= Hifiman HE500 & HE400 Jergpad Mod v2.5 = - Page 85

post #1261 of 1702
Quote:
Originally Posted by kard16 View Post
 

I was a bit neater on the back side of the driver (since it will actually be seen):

 

 

  

 

The visco-elastic material is hard to work with in thin strips, so I stuck to felt for the driver, but since I had some extra dynamat laying around, I put it on the inside ring of the housing.  Hopefully this experiment pays off.  

 

Yeah, that looks nice.  Did you happen to listen after doing the inner felt, but before the pic above?  I'm curious if you notice any change due to the dynamat.  The felt on the outer part shouldn't affect the sound, at least nowhere near the way the inner felt does.  Interesting experiment.

post #1262 of 1702
Quote:
Originally Posted by ThurstonX View Post
 

 

Yeah, that looks nice.  Did you happen to listen after doing the inner felt, but before the pic above?  I'm curious if you notice any change due to the dynamat.  The felt on the outer part shouldn't affect the sound, at least nowhere near the way the inner felt does.  Interesting experiment.

 

What I did was I finished one cup and started listening to music.  I don't think the outer felt does much but the dynamat did affect the sub-bass.  I played a few sub-bass heavy tracks and the cup that wasn't modded would start to vibrate when I cranked up the volume.  The un-modded cup would give you more of a tactile sensation, which some people might like.  I prefer the cup with the dynamat, but I think it's up to personal preference.  I would say it's a pretty permanent mod, the stuff would be a pain to try and remove, so if you're happy with the sub-bass right now, I wouldn't do it. I would love to get measurements done to see what the effect the inner felt and dynamat have.   

 

Quick edit, I finished both cups a few hours ago and have not put down my headphones since.  I think I'm done modding, I've got exactly what I was looking for.  


Edited by kard16 - 11/21/13 at 9:01pm
post #1263 of 1702
Quote:
Originally Posted by kard16 View Post
 

 

What I did was I finished one cup and started listening to music.  I don't think the outer felt does much but the dynamat did affect the sub-bass.  I played a few sub-bass heavy tracks and the cup that wasn't modded would start to vibrate when I cranked up the volume.  The un-modded cup would give you more of a tactile sensation, which some people might like.  I prefer the cup with the dynamat, but I think it's up to personal preference.  I would say it's a pretty permanent mod, the stuff would be a pain to try and remove, so if you're happy with the sub-bass right now, I wouldn't do it. I would love to get measurements done to see what the effect the inner felt and dynamat have.   

 

Quick edit, I finished both cups a few hours ago and have not put down my headphones since.  I think I'm done modding, I've got exactly what I was looking for.  

 

Thanks a lot for the feedback.  Too bad it's a semi-permanent mod, but I'll file it away for future reference.  Well, would this help make it a reversible mod?  Line the surface of the cup where the dynamat goes with something easily removable, like painter's tape, then apply the dynamat to that.  I have no experience with dynamat or something similar, so I've no idea how sticky it is (very, I gather).

 

Also, any thought on adding it to the inner ring of the other side (ear side) of the cup?  Or did you do that?

 

Congrats on a successful mod!


Edited by ThurstonX - 11/21/13 at 9:41pm
post #1264 of 1702
Thread Starter 
Quote:
Originally Posted by kard16 View Post
 

 

What I did was I finished one cup and started listening to music.  I don't think the outer felt does much but the dynamat did affect the sub-bass.  I played a few sub-bass heavy tracks and the cup that wasn't modded would start to vibrate when I cranked up the volume.  The un-modded cup would give you more of a tactile sensation, which some people might like.  I prefer the cup with the dynamat, but I think it's up to personal preference.  I would say it's a pretty permanent mod, the stuff would be a pain to try and remove, so if you're happy with the sub-bass right now, I wouldn't do it. I would love to get measurements done to see what the effect the inner felt and dynamat have.   

 

Quick edit, I finished both cups a few hours ago and have not put down my headphones since.  I think I'm done modding, I've got exactly what I was looking for.  

Can you provide me with a couple of those sub-bass-heavy test tracks? Thanks. If they are good, I'd like to use them for tests in the future.

post #1265 of 1702
Quote:
Originally Posted by jerg View Post
 

Can you provide me with a couple of those sub-bass-heavy test tracks? Thanks. If they are good, I'd like to use them for tests in the future.

Sure. 

 

SBTRKT - Trials of the Past

Jamie xx & Gil Scott-Heron - I'm New Here

James Blake - Retrograde

Run The Jewels - Run The Jewels

Death Grips - Guillotine

post #1266 of 1702
Quote:
Originally Posted by ThurstonX View Post
 

 

Thanks a lot for the feedback.  Too bad it's a semi-permanent mod, but I'll file it away for future reference.  Well, would this help make it a reversible mod?  Line the surface of the cup where the dynamat goes with something easily removable, like painter's tape, then apply the dynamat to that.  I have no experience with dynamat or something similar, so I've no idea how sticky it is (very, I gather).

 

Also, any thought on adding it to the inner ring of the other side (ear side) of the cup?  Or did you do that?

 

Congrats on a successful mod!

 

I don't know if that would work.  The visco-elastic material needs to be well bonded to whatever structure you want to vibrationally damp.  In this case, I was trying to damp the housing itself. and since the entire housing is pretty rigid, attaching the dynamat to the plastic inner ring should suffice.  I would have liked a bit more coverage, but no where else to put it really.  Regardless, putting another medium like painters tape between the dynamat and housing will probably diminish the intended effect.  How much so, I can't say.  

 

There isn't an inner ring on the ear side of the cup.  The driver is flush with the housing.  

post #1267 of 1702

After tearing up my alpha pads for HE-500 science (did most jergpad mods besides velour overlay), I'm beginning to think the Audeze vegan/micro suede pads might be an ideal candidate in what I'm looking for. The alpha pads brought a much more open, wider sound and much more comfort vs the jergpads. However, I found they greatly benefited from me cutting slits on the outside of the pads and where the pads meet the head. I believe there was a noticeable improvement in filling out a dip that existing around 7-8KHz before I cut those slits. For reference, I had already cut holes in the bottom of the alpha pads, and I did not try cutting slits in the inner part of the pads.

 

With the Audeze vegan pads, I'm assuming the micro suede material will be more porous and thus make up for having to cut openings in material such as leather or pleather. With that and their similar shape, I'm thinking they'd be a good candidate for replacement pads. I'd still likely do the holes in the bottom, though the shape of the pads may negate the need of back vents.

 

I've also noticed that the alpha pads seem to have a lighter sound to them. My best guess is that they have more of a roll-off in the bass. I read elsewhere that the Audeze pads can benefit from having two plastic rings in place (stock and HFM mounting ring) for better bass conduction. I'm wondering if I'm seeing a similar effect here, as the alpha pads I have are perhaps a tiny bit loose on the mounting ring and headphone overall. It might benefit from a different mounting method. For example, I've seen someone directly tape their vegan Audeze pads to the headphone and skip the mounting ring entirely. That's one big thing I'll have to consider and play around with on both the alpha pads and if I decide to try those vegan pads.

post #1268 of 1702
Quote:
Originally Posted by kard16 View Post
 

Sure. 

 

SBTRKT - Trials of the Past

Jamie xx & Gil Scott-Heron - I'm New Here

James Blake - Retrograde

Run The Jewels - Run The Jewels

Death Grips - Guillotine


Man, that Jamie xx song made me feel like I had two vibrators in my ears. Never experienced that except with sinegen.

post #1269 of 1702

kard16, just to clarify, you used dynamat on the outside and felt on the inside? I'm not sure where you put the dynamat.

post #1270 of 1702
Quote:
Originally Posted by Thujone View Post

kard16, just to clarify, you used dynamat on the outside and felt on the inside? I'm not sure where you put the dynamat.

I put the felt on both the outside and inside on the metal frame where the magnets are connected, just like Jerg.

The dynamat I put on the outside, on the inner ring (below where the grill goes). Look at the last picture I attached, you can see silver strips on that inner ring.
post #1271 of 1702
Quote:
Originally Posted by kard16 View Post


I put the felt on both the outside and inside on the metal frame where the magnets are connected, just like Jerg.

The dynamat I put on the outside, on the inner ring (below where the grill goes). Look at the last picture I attached, you can see silver strips on that inner ring.

Ok, I see that now. More rumbly bass sounds very satisfying...

post #1272 of 1702
Quote:
Originally Posted by Thujone View Post

Ok, I see that now. More rumbly bass sounds very satisfying...

The bass is still rumbly and you still get the tactile sensation, but it's tamed and sounds tighter.
post #1273 of 1702
Quote:
Originally Posted by kard16 View Post
 

 

I don't know if that would work.  The visco-elastic material needs to be well bonded to whatever structure you want to vibrationally damp.  In this case, I was trying to damp the housing itself. and since the entire housing is pretty rigid, attaching the dynamat to the plastic inner ring should suffice.  I would have liked a bit more coverage, but no where else to put it really.  Regardless, putting another medium like painters tape between the dynamat and housing will probably diminish the intended effect.  How much so, I can't say.  

 

There isn't an inner ring on the ear side of the cup.  The driver is flush with the housing.  

 

Ah, that makes sense.  Guess I'll be skipping that mod, then.

 

Yep, I guessed that was the case this morning as I was thinking about it.  Thanks for saving me trouble of pulling off the pads.

post #1274 of 1702
Quote:
Originally Posted by kard16 View Post


The bass is still rumbly and you still get the tactile sensation, but it's tamed and sounds tighter.

Whoops, I misread your post. Thought you said that the modded cup was the one that rumbled, my mistake.

post #1275 of 1702
Thread Starter 

I'm tempted to do another modification, after some random brainstorming last few days.

 

Using threads knots to make the front half of the earpads thinner, thus slanting the Jergpads? I think I'll try it tonight. It should be fairly reversible (just cut the thread knots and pop the threads out).

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