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Dismantling Guide for the HD25-1

post #1 of 9
Thread Starter 

Hi. Thought this might be useful to some people. A quick vid to show how to fully dismantle the HD25-1




I Know the HD 25s are designed so that every part is user serviceable but I also know a lot of people are still scared of pulling them apart. So here is a guide with lots of picks. These are definitely the easiest DJ headphones to dismantle and I take my hat off to sennheiser for that. Any way….. Lets get on with it.

I know it seems silly but you might as well start from the beginning

Stage 1
Un boxing. Like the rest of the headphones the box is simple and well designed, just pop it open and undo a twistick to remove the headphones from their bag. Anyone who has unboxed a pair of panasonics will know it is not always that simple.

sennheiser hd25-1 box
HD25c bag
unboxed HD25-13

Stage 2
Remove the right earcup. Unhook the cable from the right earpod by pulling it out. Then slide the cup down to the bottom of the headband then use a little extra force to get it to pop off the end.

Removing the hd 25-1 earpod

Stage 3
Remove the cable from the headband. Grasping the connector you have just unplugged carefully pull the cable out of the groove on the inside of the headband. Take it slow as you don,t want to break it.

removing the sennheiser hd25 cable

Stage 4
Now remove the left cup using the same method used on the right

removing left earcup

Stage 5
Unscrew these two screws holding the cable on to the earcup. On the 25C there is only 2 screws, on the 25-1 and 25-13 the cable is sandwidged inbetween two plastic runners so as you remove the screws make sure you don’t lose them

remove the hd25c cable
detached cable dj aheadphones

Stage 6
Unscrew this screw with a medium flat head screw driver. Once you have unscrewed the second one on the other side the rest of the headband pieces should come apart. If you check the second photo this is what it should look like now

unscrew the headband
dismantled headband

Stage 7
Unpeel the padding. The padding is held on with double sided sticky tape… Carefully peel them off you don’t want to tare them!


Stage 8
Unhook the ear cushion. Poke your finger inside the earpad and gently pull it away from the body. Underneath there will be a foam disk which just comes away.

ear cushion
Dismantled earpad

Stage 9
Dismantle the ear pod. Hold the earpod by it’s sides and firmly press the centre part ( the bit with the writing/screw wholes on) the the driver should pop out. Inside there is a disk of sound absorbing material which again just comes away.

HD 25-1 driver

And your done… you should now have a fully dismantled pair of HD25s
fully dismantled hd25s

post #2 of 9

Very nice. I've got an HD25-13 that I might take apart for modding/painting.


I started to do some work on my HDJ-2000 the other day, got up to the hinge/spring area... poked around for a few minutes, then decided it wasn't worth the hassle. I commented on your video of that one actually. 

post #3 of 9

Nice one :) 


How about getting in between the two pieces of plastic that make that hold the driver to get at the jack contact points?

post #4 of 9
Thread Starter 
Originally Posted by taiwan2 View Post

Nice one :) 


How about getting in between the two pieces of plastic that make that hold the driver to get at the jack contact points?

No Problem,,,,,



1) Lifting up the cover

To get the grate/cover up just stick a small flat headed screwdriver in here ….. And lever it up

2) Under the hood

The socket is covered by a plastic cap

3) Remove the cap

The cap had a handy tab which you can get hold of with some small pliers. Pull gently out making sure not to damage the thin wires leading to the voice coil


Edited by jfunk - 11/18/11 at 9:45am
post #5 of 9

I had difficulty popping the grill off all the way with a screwdriver. I could pry it up partway and break the seal, but couldn't get it far enough underneath. I wound up using pliers to pull it up just enough to fit a fingernail underneath, then worked my way around by hand. 

post #6 of 9

Here's what it looks like from the other side:


post #7 of 9

Just opened them up to have a look at the contact point that was giving me trouble.  To anyone else who ends up taking off the plastic clip, be SUPER CAREFUL with the lead wires. They overlap the clip and are tiny enough one might miss them until it's too late.  I had to move them over, and carefully put them back to their original position when I was done.  After the clip is off the contacts are springs.  One of mine was visibly out of alignment, but after a little gentle finessing it was back in shape.  A quick test later and I'm a happy camper with no more intermittent connection.  Funny symptom of the loose contact was that when the it wasn't cutting out there was a slight reduction of the lower frequencies that had me feeling the L/R balance was off.  For now we're back to normal. 


Thanks go out to Sennheiser for theses really serviceable phones, and to jfunk and Armaegis for a great vid and pics.


Edited for sourcing

Edited by taiwan2 - 11/25/11 at 11:27pm
post #8 of 9

The vid/images are jfunk's, not mine.

post #9 of 9

Oops.  Edited accordingly.

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