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= Hifiman HE500 & HE400 Jergpad Mod v2.5 = - Page 48

post #706 of 1702

Damn sucks that they're too dense, seemed like a good solution to me. 

post #707 of 1702
Quote:
Originally Posted by beaver316 View Post

Damn sucks that they're too dense, seemed like a good solution to me. 

I agree the pleather foam rings are too thick...they are about twice the thickness of the foam pieces I made.  I get what he was saying though...adding in some 'pad foam' or similar (like from an on-ear headphone, think KSC-75 or similar) cutting and inserting pieces in the gaps between the vent foam pieces...that way air still can move, but there is a layer of protection from dust.  Sounds like it could work well.

post #708 of 1702
Thread Starter 

For anyone interested, here is my parametric EQ for HE500 with v2 Jergpads.

 

 

 

Electri-Q EQ file download link.

 

 

 

Basically if you flip that param EQ over vertically, that's the rough FR of the HE500 with jergpads (to my ears).

 

 

This took me a while to make and fine-tune, previously I always avoided EQ with my HE500 because I never could get the EQ to a point where its corrections outweigh its misdoings; this EQ far exceeds that threshold IMO. Jergpad HE500s sound very close to perfect in timbre with it.

 

One might also observe that the EQ here itself is fairly minor in amplitudes (nothing more than 3 dB or so up or down), it's because HE500 itself is a relatively close-to-neutral phone, so no aggressive corrections are needed.


Edited by jerg - 7/27/13 at 10:36am
post #709 of 1702

Nice job!!  Add me to the list.  PM on the way...

post #710 of 1702
Thread Starter 
Quote:
Originally Posted by jerg View Post

For anyone interested, here is my parametric EQ for HE500 with v2 Jergpads.

 

 

 

Electri-Q EQ file download link.

 

 

 

Basically if you flip that param EQ over vertically, that's the rough FR of the HE500 with jergpads (to my ears).

 

 

This took me a while to make and fine-tune, previously I always avoided EQ with my HE500 because I never could get the EQ to a point where its corrections outweigh its misdoings; this EQ far exceeds that threshold IMO. Jergpad HE500s sound very close to perfect in timbre with it.

 

One might also observe that the EQ here itself is fairly minor in amplitudes (nothing more than 3 dB or so up or down), it's because HE500 itself is a relatively close-to-neutral phone, so no aggressive corrections are needed.

Aaaaaand I'm back to no EQ again. That sure didn't take long.

 

Despite the timbre correction etc etc, there is just something seductive about the slight colouration of the non-EQ'd jergpad HE500s...the vocals feel like they have more emotion and character.

 

I'm all for neutrality as a goal, but the fact remains I end up judging sound quality by how good the music makes me feel in a totally subjective manner.

post #711 of 1702

My pleather pads are stored away somewhere, but since i was going to destroy the velour pads anyways for this mod i decided to just go ahead and try the damping and back-vent mods. What a difference! I think i might even go for a few more stacks of tape for extra back-venting (Seems my stacks are a tad smaller than those displayd here).

 

I've tried playing a bit with the distance between my ears and the drivers and i'm not sure i'll feel the benefit much from the Velour-top mod, and i might just leave the pads i have now as is. That leads me to ask this question:

 

Is being able to perform the "velour-top" mod the only reason for using the pleather pads as the base for this mod, or does the pleather pad offer something the velour doesn't out of the box in terms of damping etc.?

 

Great mod, thanks!

 

/Martin


Edited by Kjeldsen - 7/28/13 at 9:27am
post #712 of 1702
Thread Starter 
Quote:
Originally Posted by Kjeldsen View Post

My pleather pads are stored away somewhere, but since i was going to destroy the velour pads anyways for this mod i decided to just go ahead and try the damping and back-vent mods. What a difference! I think i might even go for a few more stacks of tape for extra back-venting (Seems my stacks are a tad smaller than those displayd here).

 

I've tried playing a bit with the distance between my ears and the drivers and i'm not sure i'll feel the benefit much from the Velour-top mod, and i might just leave the pads i have now as is. That leads me to ask this question:

 

Is being able to perform the "velour-top" mod the only reason for using the pleather pads as the base for this mod, or does the pleather pad offer something the velour doesn't out of the box in terms of damping etc.?

 

Great mod, thanks!

 

/Martin

I really didn't like how the velour pads sounded with the damping holes...

 

This mod is intended specifically for pleather pads as the base because of their sonic characteristics. Here's the "preface" of the v1.0 of jergpad mod where I described my reasoning behind it all.

 

Warning: Spoiler! (Click to show)

 

 

PREFACE

 

 

 

Ever since I got my HE500s two months ago, I have been very bothered that no earpad worked out perfectly for me with them.

 

The stock Hifiman velour pads (with detachable mounting rings) thin out the bass and lower midrange too much and cause the whole tonality to shift toward the upper midrange and treble, giving too much forwardness and glare, and too little body and fullness to the sound signature.

 

The stock Hifiman pleather pads, on the other hand, are almost exactly the opposite; they give an incredibly satisfying full-bodied lower end, tame the treble and upper midrange effectively, resulting in a tonality that renders everything from voices to instruments realistically and without any fatigue or glare. However there is one major downfall with the pleathers – they have a huge amount of chamber resonance in the opening of the earpads and so the HE500 ends up sounding cupped, and have little to no “air”, losing a huge amount of upper end detail extraction, and is almost muffled but not quite.

 

**Quick note: I never kept the foam spacers inside of the stock pleather pads because it 1) compromised the comfort and 2) muddled up the sound considerably into a wonky mess; also it won’t be compatible with this particular mod, so don’t even think about it….just throw it in the garbage right now **

 

This led me to try 2 other pads: vintage Hifiman velour pads (with permanently attached clear brittle plastic mounting mechanism), and the J-Money (J$) Beyerdynamic lambskin earpads. In short, neither gave me exactly what I want still.

 

The vintage velours tame the upper end much better than the new velours, but a large part of the lower end is nonexistent with these pads so the overall sound becomes too light and powerless.

 

The J$’s were the closest to perfect from my experience, where they extracted the most amount of overall detail from the drivers, had a great balance of the full-bodied nature of pleathers and the airiness and openness of the velours, and were just superior earpads in terms of comfort. The thing that persuaded me it was still not quite right was that it retained a lot of the upper mids glare and treble sibilance similar to the new velours, which was no issue with the pleathers and to a lesser degree to the vintage velours.

 

After playing around these four types of earpads for the past couple of weeks, I came to the realization that the unique effortless tonality of the Hifiman pleathers is intrinsic to the foam used in them (a dense foam with a memory-foam-like consistency), and the thickness (which determines how close your ears are to the drivers). This was not replicatable with any of the other pads as they use different types of foams with different thicknesses.

 

Another observation I came to have was that the main reason why all the earpad types except the pleathers have great upper end detail extraction and cleanness, was because they are all properly damped to minimize chamber resonance! With both the velour pad types, sound bouncing in the inner opening of the earpads escape through the velour fabric, while in the J$ pads, the sound reflects off the leather but is ultimately absorbed by the huge number of holes bored into the underside of the pads (Fig 1), and absorbed into the earpad foam itself.

 

 

 

And so the lightbulb went up in my head. What if I mod the stock pleathers so that they are more properly damped? Thus this mod was born.

 

 

Maybe I should put it into the current opening post as well..


Edited by jerg - 7/28/13 at 9:35am
post #713 of 1702

Yeah, well the pleathers are agreed upon to have a nicer tonality, but it also has some problems which the mods try to adress along with further enhancing the sound.

post #714 of 1702

Cheers, Jerg. Thanks for clearing that up :)

 

Now where did i put those pleathers! Until i find them, these modded velours still sound better than stock (Thankfully).

post #715 of 1702
Thread Starter 

Here's something I whipped up just now in MSPaint to try and explain:

 

post #716 of 1702
Quote:
Originally Posted by jerg View Post

Here's something I whipped up just now in MSPaint to try and explain:

 

 

Very informative, thanks. I definately recognize the slightly dry sound and thin bass of the stock velours.

post #717 of 1702
Quote:
Originally Posted by jerg View Post

Here's something I whipped up just now in MSPaint to try and explain:

 


thanks...what would we be without u beerchug.gif


Edited by hifimanrookie - 7/28/13 at 5:26pm
post #718 of 1702
Quote:
Originally Posted by jerg View Post

For anyone interested, here is my parametric EQ for HE500 with v2 Jergpads.

 

 

 

Electri-Q EQ file download link.

 

 

 

Basically if you flip that param EQ over vertically, that's the rough FR of the HE500 with jergpads (to my ears).

 

 

This took me a while to make and fine-tune, previously I always avoided EQ with my HE500 because I never could get the EQ to a point where its corrections outweigh its misdoings; this EQ far exceeds that threshold IMO. Jergpad HE500s sound very close to perfect in timbre with it.

 

One might also observe that the EQ here itself is fairly minor in amplitudes (nothing more than 3 dB or so up or down), it's because HE500 itself is a relatively close-to-neutral phone, so no aggressive corrections are needed.

You are an artist with that EQ curve tongue.gif

post #719 of 1702

6 and 7,5 kHz are due to inner ear resonants, right?

 

I thought you mostly only had one resonant frequency in the ear.

post #720 of 1702
Thread Starter 
Quote:
Originally Posted by davidsh View Post

6 and 7,5 kHz are due to inner ear resonants, right?

 

I thought you mostly only had one resonant frequency in the ear.

The 6kHz is actually a dip in the FR, not related to the ear canal. Ditto with the ~15kHz valley.

 

700

 

 

The ~7.5kHz one on the other hand is ear-related, and doesn't show up in measurements.


Edited by jerg - 7/28/13 at 4:11pm
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