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= Hifiman HE500 & HE400 Jergpad Mod v2.5 = - Page 68

post #1006 of 1702

Like on the pad on the far right in this pic...

 

http://cdn.head-fi.org/0/0c/0c16ef91_DSC_8524.jpeg

post #1007 of 1702
Thread Starter 
Quote:
Originally Posted by mlxx View Post
 

Like on the pad on the far right in this pic...

 

http://cdn.head-fi.org/0/0c/0c16ef91_DSC_8524.jpeg

I know, I saw that detail right away when those Oppo cans were announced here. It does look like they hole-punched all those tiny holes in the leather there, which again, I haven't found a way of doing yet with pre-made earpads like Hifiman pads. You just can't do it unless you have the leather laid out in front of you, which would mean gutting the pleather earpads and then somehow re-assembling it. :eek:

post #1008 of 1702

What I was thinking was pin pricking it all over but the holes might be too small that way.

 

Have been happy with the sound of the HE400 velours with EQ so I have been putting off the jergpad mod so far.

Will be going to the aussie Audio & AV show later this week, maybe will get listen to the HE500 there or the Stax SR-009 :eek:.

post #1009 of 1702
Thread Starter 

I think barring some unexpected developments, the "Jergpad" has come near the end of its revision phase, it's a robust mod with many tests and measurements done, as well as a lot of impressions and upcoming ones.

 

The next interesting thing might be some sort of DIY adaptation of the new Audeze "Fazor" technology onto HFM drivers.

 

Quote:
Fazor Technology
Our patent-pending Fazor elements are new to our planar magnetic drivers. They help guide and manage the flow of sound in the headphone. The result is improved phase response, greater frequency extension, smoother frequency response, and remarkable 3D holographic imaging.

 

post #1010 of 1702
Since Fazor is already taken, may I suggest Jerglens or Jergfusers.
post #1011 of 1702
Quote:
Originally Posted by purrin View Post
 
Since Fazor is already taken, may I suggest Jerglens or Jergfusers.
 

+1 on jergfusers...or with a 'z' = jergfuZers ;)

post #1012 of 1702
Jergfuzers...awesome...what exactly is that part doing in there? What material is it? Anyone know?
post #1013 of 1702
Quote:
Originally Posted by mlxx View Post
 

What I was thinking was pin pricking it all over but the holes might be too small that way.

 

In addition to cutting out fairly large holes on the bottom of the pads, I also made pin pricks with my x-acto knife in small 'x' shapes. I believe it made a small difference, as I had actually forgotten to do that on one of the pads. When I listened, I noticed a slight difference in the two channels. This difference more or less disappeared after I went back and made the 'x' shaped pin pricks on the bottom of the other pad, though I was doing enough tweaks to the pads and such that I can't say with 100% certainty that it was the pin pricks that made the difference. For all I know, I could have just put the headphones on weirdly when I heard than imbalance in the channels.

 

I can say that the 'x' shaped pin pricks don't look nearly as nice as the pads on that Oppo headphone. Looks more like a cat got at my pads, lol.

 

Quote:
Originally Posted by jerg View Post
 

I think barring some unexpected developments, the "Jergpad" has come near the end of its revision phase, it's a robust mod with many tests and measurements done, as well as a lot of impressions and upcoming ones.

 

The next interesting thing might be some sort of DIY adaptation of the new Audeze "Fazor" technology onto HFM drivers.

 

I think there is still room for experimentation with the material used to cover the pleather pads at the very least, though this is a small thing and doesn't change the basics of the mod. As I had mentioned prior, I heard good results from a thin pair of dress socks (no idea what they were made of). I found them a bit more comfortable, and I remember the sound being a bit more relaxed in the treble. I just had no way to more permanently adhere them, and they kept slipping off otherwise. 

 

Also, "fazor?" Really? That's just bad.

post #1014 of 1702
Quote:
Originally Posted by hemipowered007 View Post

Jergfuzers...awesome...what exactly is that part doing in there? What material is it? Anyone know?

 

Looks like some kind of wave guide, diffuser, or sonic lens kind of thing - to help guide the sound waves in smoother fashion to the ear. I have long suspected the standard grate pattern, with the square edges of the grills, can do some funky stuff to the FR. From the image, the Fazer insert looks to have rounded horizontal grill elements.

post #1015 of 1702
Thread Starter 
Quote:
Originally Posted by purrin View Post
 

 

Looks like some kind of wave guide, diffuser, or sonic lens kind of thing - to help guide the sound waves in smoother fashion to the ear. I have long suspected the standard grate pattern, with the square edges of the grills, can do some funky stuff to the FR. From the image, the Fazer insert looks to have rounded horizontal grill elements.

Putty wave guides, anyone? I'm thinking one would just need a simple mould for making uniform strips of putty with the "arched window" cross-section shape, and then just transplanting those strips onto the Hifiman drivers.

post #1016 of 1702
well, it was only a matter of time before modding the internal portion came into play. I for one welcome the idea, if th T50 driver has came into configurations warranting 500+ price tags and such high praise, imagine what a better starting point like a hifiman or audeze may possibly be able to accomplish. Or, maybe, the r&d on the t50 was just terrible or fostex lost interest. Either way, I'd love to see if somone smarter than I could squeeze more out of the 400/500 driver. But, ruining a $70 headphone as opposed to a +/- 400 headphone isn't really realistic for diy r&d for most of us.
post #1017 of 1702
Thread Starter 

No doubt, I'm just joking and throwing around light-hearted ideas at the moment about the wave guide / diffuser stuff similar to what Audeze's doing. In practice we need to wait till people start getting LCD-X / XC and taking high res photos of the drivers with the Fazors, as real reference, before anything real can be done.

post #1018 of 1702

One thing I'd like to see is headcups which angle the HE-400 driver and place them more forward and down from the the ears. This seems to result in better depth. I try to wear my HE-400s this way, but the current design doesn't allow much flexibility in placement.

post #1019 of 1702
Quote:
Originally Posted by purrin View Post
 

One thing I'd like to see is headcups which angle the HE-400 driver and place them more forward and down from the the ears. This seems to result in better depth. I try to wear my HE-400s this way, but the current design doesn't allow much flexibility in placement.

Hey purrin, on a side note is your name in reference to the character in the anime Welcome to the NHK? I watched it this week on Netflix, and now can't disassociate your screen name with that character (and song), and I apologize if you didn't name your yourself in reference to that anime or character. :o

 

http://en.wikipedia.org/wiki/Welcome_to_the_N.H.K.#Puru_Puru_Pururin

 

Good anime by the way.

post #1020 of 1702
Quote:
Originally Posted by hemipowered007 View Post

I love your avatar. Every time you post I picture a talking dog with sunglasses saying the words.
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