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**Hifiman HE-400 Impressions and Discussion Thread** - Page 1020

post #15286 of 20019

I have been trying to use EqualizerAPO, Sinegen and a realtime EQ (PEQGUI-10MC, posted in another thread on here) to try and get a flat response. Found it too hard to do it by ear alone with just Sinegen. This way its possible to adjust the EQ in realtime to eliminate the dips/peaks, its easier to work out the dB levels. Unfortunately, Sinegen doesn't want to play ball, it keeps pulsing for some reason and starts/stops the signal.

post #15287 of 20019
Quote:
Originally Posted by mlxx View Post
 

I have been trying to use EqualizerAPO, Sinegen and a realtime EQ (PEQGUI-10MC, posted in another thread on here) to try and get a flat response. Found it too hard to do it by ear alone with just Sinegen. This way its possible to adjust the EQ in realtime to eliminate the dips/peaks, its easier to work out the dB levels. Unfortunately, Sinegen doesn't want to play ball, it keeps pulsing for some reason and starts/stops the signal.

 

You need to set / save the DB of each frequency you select in sinegen..... Then you can click between them and you will notice any changes in volume, also you can download a frequency sweep and run that. If it starts pulsing then just switch it off then on again using the power button.


Edited by nicholars - 12/17/13 at 10:46pm
post #15288 of 20019
manbear, you get 3x the power but that resister is dissipating 7x the power of the he-400 right? Resistance is proportional power, P = I^2 * R. What did it sound like with/without the adapter?
Edited by bdr529 - 12/17/13 at 10:49pm
post #15289 of 20019

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?

post #15290 of 20019

SOme people say that soaking them in hot water and squzing them out, letting them get dry helps with this.

Personally i did this on the Beyer pads and it helped a bit.

post #15291 of 20019

my receiver is one of the most common brands and a very common model due to the price they can be had for and directly coming from marantz support "the headphone output on your 5006 is most definitely directly coupled together with a resistor as are all our recent models"

post #15292 of 20019
Quote:
Originally Posted by DoctaCosmos View Post
 

my receiver is one of the most common brands and a very common model due to the price they can be had for and directly coming from marantz support "the headphone output on your 5006 is most definitely directly coupled together with a resistor as are all our recent models"

 

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... that amplifier is quite a lot of money and it is probably still worse for headphone use compared to a £200 headphone amp... I have a £350 NAD 326bee with a headphone jack from the main amp and it still sounds worse with the HE400 than my £100 xonar STX....so I am not sure what the point of your posts are really... Sounds like you are just trying to justify your amplifier as being good for headphones or something... It is not really any help to anyone else and is basically misleading. If someone wants an amplifier for the HE400 then buying an AV amplifier and using the headphone jack is quite blatantly not the best idea.... Unless they want an AV receiver and are not bothered about the quality of the headphone amplifier.... In which case they would be posting on an AV receiver forum asking what AV receiver to use for their home cinema.... It is just a bit irritating when people make pointless one liner comments which are completely misleading and pointless.


Edited by nicholars - 12/18/13 at 10:28am
post #15293 of 20019

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

post #15294 of 20019
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 #15295 of 20019
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 #15296 of 20019
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 #15297 of 20019
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 #15298 of 20019
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 #15299 of 20019
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 #15300 of 20019
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
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