DEFINITIVE GUIDE TO REPLACE SENNHEISER HD 25 SP CABLE
QUATER INCH JACK WITH MINI JACK FOR PORTABLE MUSIC DEVICES
Ahh, at LAST - is always a hassle to have to register with a forum just to post one reply but it'll be worth it if it helps someone out. - I could not find this information anywhere else and since in the past ppl have helped me with various software/file and also real information on forums I had to post my solution here, even though this post is prehistoric I'm about to wake it up!
This thread is the 5th in Google for searches containing "sennheiser hd 25 sp" and "soldering" so it's probably the best place to post this.
I recieved these headphones from an uncle a few years ago and I was ****** that the jack wasn't switchable (damn you sennheiser!) though I think their new kick-ass models are switchable. I used it for a few months on the street, with a proper quarter inch to mini jack converter but it was WELL cumbersome and after a while the jack on the headphones got damaged and started to cut out a little bit. Drat. Thing is, it was more than a year later (recently) that I though (not being an electrician nor handy with such things at all): "why don't I just solder a new one on??"
First up I checked if there was a mini jack replacement cable which there was at sennheiserspares.com - but it's £25 which is bloody ridiculous.
I can buy a decent jack AND a soldering kit for less than that. So I did.
Eventually I got round to ordering this (I gotta have the best)
Neutrik 3.5mm stereo right angle plug
from
http://www.felmicamps.co.uk/products...ectorsand.html
Good old FEL Communications (thanks guys)
This really is the best mini-jack I have ever seen. Right angle too, perfect for portable audio devices.
Maplins is the WHACK!
Then I ordered a soldering kit for £12 from WOOLWORTHS(.com)
It's a good enough kit - has EVERYTHING and more
thing is, they lost it first and then I emailed them and asked them to send it again - it took 3 weeks in total (so I can't recommend their service - get from store if you can, or just use the one you have, or buy one from somewhere else)
Yo Snowbhoy, did you figure it out?
Here's the technique for replacing the quarter inch jack on the sennheiser hd 25 sp to a mini jack for laptops/iPods etc:
When I severed the cable in half (I just wanted 1.5 meters) I was annoyed to find two wires for left and right channels - four cables in total.
right channel is RED and BLUE, left channel is YELLOW and GREY
***? I though - that's when I searched for this forum.
I couldn't figure out what cribeiro was saying (above) about multimeters - way too much hard work (but cribeiro gives some good soldering advice).
Couldn't find the answer so I made an educated guess - since there are 3 points to solder on the replacement jack, one wire of each channel must carry the signal, and one wire of each channel must ground.
Goes like this:
RED & YELLOW audio channels (right and left respectively - check documentation on your replacement mini jack to check which is which when you solder)
GREY & BLUE are ground. Pretty obvious really but to those who needed a little reassurance, I hope this has been of some use.
GOOD LUCK!