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Soundstage mod for Sennheiser HD-555/595 (Re-Mastered)

post #1 of 42
Thread Starter 

Hey guys,

      So I just got my new pair of HD-555 and wanted to do everything right this time around.  So I will do my best to explain how to "widen" the soundstage for the Sennheiser HD-555/595 models.  Originally I used a soldering iron because that was the only thing in the how-to's other people created used.  I also ripped out the nylon baffle which I shouldn't have done.  So this time around, I will make it much easier, and better sound as well.  Stay tuned for my re-wiring of the HD555-595 because I will explain in depth how to do that.  Both of these mods can be done by a total novice like I still am.  They are pretty easy and you will definately get some better sounding headphones.  Beware that the soundstage mod is not reversible and both mods can void your warranty.  If you have any questions or want to give advice, please feel free to PM me.  Anyways, here goes for the HD-555/595 soundstage mod.

 

1.  Carefully peel off the earcup padding, they come off pretty easily, just don't rip it fast, do it slowly.  I found it's best if you reach your fingernails all the way to the inside and pry off.

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2.  Next, you want to take off the outer most mesh grill.  This comes off just as easy, just use your fingernails or a flat-head screwdriver and reach in the little tabs.  Once you have one little tab up, just pry it underneath with your fingers and it comes off easily.

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3.  Next, you want to take out the 3 really tiny screws.  Make sure you don't lose them!  Just place them in a safe place away from the headphones so the magnet doesn't pick them up!

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4.  Now, carefully reach in the very edge of the earcup and pry it out, be careful here because the driver is attached to some very thin 32 AWG wiring.  Just pry it off a little, then set the driver next to the earcup and lay it flat.

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5.  Now that the speaker is out you want to take the foam piece off to begin with.  Put this back in the box incase you want to use it for something else.

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6.  Now that the foam piece is out, you can start prying up the grill tabs.  Be very careful here as well, because the tabs are pretty tiny and can snap off.  Also, there are like 2-3 tabs on each earcup that are hot glued in.  Just go behind the tab, scrape the glue out and pry it up.  Once you have them all pryed up, take your flat-head screwdriver and push down on a couple of them in opposite corners to get the grill off.

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7.  Now, comes the fun part.  I say that sarcastically.  I actually just thought of something, if your going to make it perfect like I did, I would just do it with the blade instead of using the scrissors at all.  This way, you get much more to work with and it will come out nicer if you want to put it back in.  I guess you really do learn something new every day.

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8.  Once you got that inner grill piece out, the hard work is over with.  Now, all you gotta do is put everything back in reverse order.  Make sure the speaker driver is facing the same way and be careful with them wires.  Just put your driver back in, the screws back in, clip the outer mesh grill in, and clip the outer ear cushion in.  Like I said, it's easier than it looks I would say.  Stay tuned for my re-cabling of the entire headphone!

 

And here are photos of the before and after look.
headphones before.jpg

headphones after.jpg


Edited by jschristian44 - 9/23/10 at 7:20pm
post #2 of 42

great work, going to be very usefull to me in a few days :) can u post a picture when everything is back together? want to see how it looks :)

post #3 of 42
Thread Starter 

yeah ill post more pics once its back together once i get my new cabling in.  check out my other how to thread, the old one, if you want to see what it looks like finished.

 

http://www.head-fi.org/forum/thread/476814/detailed-instructions-for-soundstage-mod-hd555-headphones

post #4 of 42
Thread Starter 

And here are photos of the before and after look.


post #5 of 42
Thread Starter 

just to show you the perfectness next to the lazyness way of doing the oval.  see how the driver isnt blocked at all by doing it perfect.  i recommend you do it perfect if you want the best sound/look for the headphones.  i cant believe how much it was blocking the driver.

sqsilz.jpgSNV30211.JPG

post #6 of 42
Quote:
Originally Posted by jschristian44 View Post

Just to show you the perfectness next to the laziness way of doing the oval.  See how the driver isnt suffocated at all by doing it perfectly.  I recommend you do it perfectly if you want the best sound/look for the headphones.  I can't believe how much it was suffocating the driver...

 

 

Fixed more or less :smrt:


Now it resembles HD6x0 a bit more, lol.


Edited by Mad Max - 9/10/10 at 9:14pm
post #7 of 42
Thread Starter 

lol that is what i immediately thought once i saw the picture i took on the computer.  it looks so much like the 650, i cant wait to hear it.  i dont know why i never did it perfectly because it looked so bad.  man im getting very impatient waiting for my supplies.  recabled dual entry, embedded zalman mic, with perfect soundstage mod, yummy.

post #8 of 42

Thanks for doing this. I think I'm going to get a pair of 555s soon and do the full mod plus a recable with a detachable boom mic.

post #9 of 42
Thread Starter 

yeah i would have done the boom mic, but i didnt know how to make a jack for that, plus the zalman mic sounds excellent in my honest opinion.  less soldering - better anyways.  just stay tuned for my other tutorial.

post #10 of 42
Thread Starter 

edit:  on how to do the edges with a blade :  yep basically that is it.  dont just stab it, but gently push and nudge it down past the outside, then just like press really hard and it will go in small segments.  don't try to flip it around and do it the other way because it will mess it up.  don't go too fast either.  took a little bit of time but it was worth it.

post #11 of 42

If I do decide to do it, I'm going to do only one ear and check to hear the difference, then do the other one.

post #12 of 42
Thread Starter 
Quote:
Originally Posted by lazyjae View Post

If I do decide to do it, I'm going to do only one ear and check to hear the difference, then do the other one.


what is that gonna do?  your gonna have a hole in the one ear if you dont like it.  if you want to test it, just take the driver out, keep it outside the phone, it can go outside, just be careful of the tiny wires.  then just put the earpad up to it and listen.  basically the same thing.

post #13 of 42
Quote:
Originally Posted by jschristian44 View Post




what is that gonna do?  your gonna have a hole in the one ear if you dont like it.  if you want to test it, just take the driver out, keep it outside the phone, it can go outside, just be careful of the tiny wires.  then just put the earpad up to it and listen.  basically the same thing.


I'll do that instead. I was thinking if I don't like it, I can stitch it back up or something. lol

post #14 of 42
Thread Starter 

well  you could do that but its not gonna look good.

post #15 of 42

Sorry, you lost me at Step 7. Why are you poking holes into that trashed piece of plastic grill? You're not using it for the mod. From the pics, only the outside metal grill is used. Or have I missed something?

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