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**Hifiman HE-400 Impressions and Discussion Thread** - Page 1021

post #15301 of 17943
Quote:
Originally Posted by nicholars View Post
 

Does anyone in the UK have some Jergpads for sale by any chance?

In a few weeks maybe. AFAIK Modulor will be finishing and shipping out a whole batch of the modded pads by the end of this week, and some of them may be to British users, and some of those may end up on FS/T forum for one reason or another.

post #15302 of 17943
Quote:
Originally Posted by Soundsgoodtome View Post

Any goal with reinstalling the pad? Or just experimenting?


Experimentation. The JergMod guide claims that the foam spacers negatively impact sound and should be discarded. I am not so sure that I should take that advice. The feel of the pads is different with spacers vs without, and they help ensure my ears are not directly touching the drivers.

 

That said, yesterday some of the treble energy was back after reinstalling the foam spacers (particularly with a piano piece), suggesting that the pleathers are still more fatiguing to my ears. It could be placebo however - meaning I just didn't notice that a quantity of energy was still there even after the mod. Maybe I should cut even more holes!

 

It is confusing anyhow, the foam for the spacers is pretty dense, but surely more absorptive than the plastic mounting rings themselves. I can only assume that the added distance from the driver has a slight impact on the presentation of sound.


Edited by MrMateoHead - 12/18/13 at 11:29am
post #15303 of 17943
Quote:
Originally Posted by Thujone View Post
 

Sounds like the DT880 may be a good choice for you.


This was the phone I was leaning toward before discovering the HE-400. In hindsight, I am glad I passed. It is pretty pricey, and I am not sure I would be into Beyers that some have called "sterile" or "analytical" - I like SOME pop and personality after all!

post #15304 of 17943
Quote:
Originally Posted by nicholars View Post
 

 

Yes but brands like NAD and Marantz are expensive and good quality so maybe they do have direct headphone jacks, but a lot of AV receivers don't...

I would tend to side with you on this Nicholars - Mainly because I highly doubt the headphone jack is a top priority in today's feature-packed super-competitive low-mid range receivers (which have auto-EQ, mic inputs, HDMI/Composite switching, 7 channel amps, video/audio processing, Wi-Fi, Networking, Streaming, Ethernet, etc etc). Even Smart Phones / Tablets / Computers are not designed prioritizing audio quality (despite playing a central role in storing our music), so why should just any device be good nuff'? Anandtech just tested a few cellphones and the performance of most suggested that there is definitely no "standard" level of performance to be expected.

 

I'd happily put a $130 O2 amp up against any other device up to $1000 to test for performance with headphones. SOME dedicated equipment is definitely worthwhile! And here I thought I was the one tending to preach the value of passing on expensive audiophile electronics that are too much marketing / too little performance oriented!

post #15305 of 17943
Quote:
Originally Posted by MrMateoHead View Post
 


Experimentation. The JergMod guide claims that the foam spacers negatively impact sound and should be discarded. I am not so sure that I should take that advice. The feel of the pads is different with spacers vs without, and they help ensure my ears are not directly touching the drivers.

 

That said, yesterday some of the treble energy was back after reinstalling the foam spacers (particularly with a piano piece), suggesting that the pleathers are still more fatiguing to my ears. Maybe I should cut even more holes!

 

It is confusing anyhow, the foam is pretty dense, but surely more absorptive than the plastic mounting rings themselves.

 

I had the same issue with driver touching the ears with it removed.. but doesn't putting the spacer back cover the holes cut out and defeat the purpose?  As yet I haven't done this mod but want to do it soon, still not convinced it will help the he400. What they should do is have spacers made of the same foam material that is inside the pads.

 

On another matter.. managed to get this working with sinegen. Its possible to use sinegen and EQ in realtime to get the FR even. It has only 10 bands but the are settable to any frequency, at this stage I have been working on the 1kHz-4kHz area. You can use the slider in sinegen to sweep and then adjust the EQ and then retest and adjust again. There are so many variations in the FR its still not that easy though. Must be some kind of microphone setup that can do this automatically.

 

post #15306 of 17943
Quote:
Originally Posted by mlxx View Post
 

 

I had the same issue with driver touching the ears with it removed.. but doesn't putting the spacer back cover the holes cut out and defeat the purpose?  As yet I haven't done this mod but want to do it soon, still not convinced it will help the he400. What they should do is have spacers made of the same foam material that is inside the pads.

No - depending on how and where you cut the holes, many remain exposed and can be there to capture reflections (I assume). In my particular case, I can see some of the holes I cut, while others are partially / completed obstructed. If I could do it over, I would keep my holes as close to seam as possible. As it is, I am pretty close, but could have been a tad more aggressive. That way, no matter what, the holes would have maximum overhang into the listening area and probably capture some of the sound as it radiates to the ear.

 

With the spacers installed, looking at the cans, what you end up with is probably 1/4 to 1/2 inch 'cylinder' firing at the ear. The pleathers / ear lobes absorb/reflect some of the sound energy as it travels to the ear. No question that the pleather has some overhang - not blocking the drivers, but certainly posing an obstacle in what would otherwise be a cylinder tube strapped to you ear. Question is, by letting the drivers be closer to my ear, am I doing a better job of minimizing unwanted reflections? Second question would be, do we have an issue wherein a square planar wave front travels badly through a round hole?

 

In any event, even without the spacers, reinstalling the pads places them against the plastic retaining ring. That ring has holes in it, yes, but the whole circumference of mount ring / pad surrounds the driver and does not really expose the holes to the driver any more without the spacer ring than with it. But it does potentially add more distance between the driver and your ear, and does add another more surface are to cause potentially more reflections I suppose.

 

Its a tough question - there is little data to go by, and I can't assume that my end result is the same as in the JERG guide, which, btw, only shows a slight smoothing out of frequency response in the 1 khz - 6 khz range mainly. I am not sure that there was a big impact on decay.

 

As far as I am concerned however, the basic mod - cutting some holes and cutting out excess pleather from the plastic ring is an improvement. I am willing to bet that the right pads would make a big difference in terms of improving damping. Stay next to the seam and try to get two rows or so, and you will probably get a maximum impact. I may take an exacto knife to mine again / remove spacers again with the same songs and have another listen.

 

I'd like to stuff a wad of poly-fill into the cups to see what happens. Has anyone tried that?


Edited by MrMateoHead - 12/18/13 at 12:54pm
post #15307 of 17943
Quote:
Originally Posted by money4me247 View Post

not to bring up a much-discussed topic, but I was wondering about the velour pads. I am finding them less comfortable than the pleathers. I think it's because of the clamping force... do the velours soften up slash get less stiff over time?
they get more comfortable when you wear them for awhile. Give it time, and they will feel better on your head/ears smily_headphones1.gif
post #15308 of 17943

you don't understand how amplifying a planar magnetic headphone works and are making yourself sound like an idiot. 

post #15309 of 17943

might i ask what your source is feeding the receiver and what type of input you're using

post #15310 of 17943

and could you please explain to me what you mean by sounds worse? your stereo receiver has inaudible distortion going by the specifications

post #15311 of 17943
Quote:
Originally Posted by DoctaCosmos View Post
 

you don't understand how amplifying a planar magnetic headphone works and are making yourself sound like an idiot. 

 

This is coming from the same guy who said a waterfall plot showed intermodulation distortion.  You don't have to be so confrontational!

post #15312 of 17943

I just had to blow some hairs off my HE-400's left driver, I had some rattling on it during low bass.  I didn't know it was susceptible to that kind of thing; the diaphragms aren't sticky like those infamous beyer ones.

post #15313 of 17943
Quote:
Originally Posted by TMRaven View Post
 

I just had to blow some hairs off my HE-400's left driver, I had some rattling on it during low bass.  I didn't know it was susceptible to that kind of thing; the diaphragms aren't sticky like those infamous beyer ones.

lol!!! sheddding season now that winter is almost over?

 

aamzing how sensitive & detailed the HE400s are hahah

post #15314 of 17943

http://youtu.be/j77VKw9Kx6U this is pretty good stuff.  raven 37 minutes in he shows distortion through waterfall plot.  yes he's showing a speaker but the concept is the same

post #15315 of 17943

He flat out says it's resonance.

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