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Rewiring earphones

post #1 of 10
Thread Starter 
Trying to sort out how I might go about this.

From my understanding, I need two double twist cables for right hot/cold and left hot/cold. Combine them at a strain relief and the two cold wires both get soldered to the ground connection on the stereo plug, right?

Also, if I wanted to add connectors at the earphones, would they be mono connectors for each earphone?
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post #2 of 10
Stereo runs on a 3 wire system well 2 and the sleeve. Left channel, right channel and ground (the sleeve). And do use a sleeved cable as that shields the signal.



When hooking up the wires to the drivers you use the channel wire and ground wire. Be sure to note where positive channel wire was connected to as having the wires backwards on one of the drivers will ruing the sound stage.
Edited by Bit_reaper - 3/20/13 at 8:44pm
    
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post #3 of 10
Thread Starter 
So I would be correct to combine the two ground wires?

I was going to get something like this and then sleeve it
http://www.ebay.com/itm/50-Mil-Spec-28-AWG-Silver-Plated-Copper-2-Wire-Twisted-Pair-Teflon-Insulation-/310622078532?pt=LH_DefaultDomain_0&hash=item485284c644
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post #4 of 10
Quote:
Originally Posted by DrGroove View Post

So I would be correct to combine the two ground wires?

Yeah but like I said you really should use a sleeved cable rather then double twist due to EM shielding.
    
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post #5 of 10
Thread Starter 
I'm not sure what you mean. Check my link, it's two separate teflon wires that would go to each earphone, so I would have 4 wires to solder to the stereo plug?
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post #6 of 10
edit: nm we're talking IEMs not headphones durr

Generally some star-quad (4 wires plus shielding) microphone cable is what's recommended. Probably no need to get the thickest stuff, as that just adds weight (is the extra super-duper EM rejection important? probably not).

e.g.
http://www.mogamicable.com/category/bulk/microphone/quad/
http://www.canare.com/ProductItemDisplay.aspx?productItemID=53


What headphones?

Yes with four conductors you have the hot signal to each channel and the ground to each channel on the headphones side, then L hot to tip / R hot to ring / both grounds to sleeve of the jack on the side you plug in.
Edited by mikeaj - 3/20/13 at 9:58pm
post #7 of 10
Thread Starter 
Is EMI really a problem? That mic cable is really thick.

Here are the earphones


The cable is starting to get really stiff and microphonic. The other issue with these earphones is the molded housing. I'm not sure what I'll see if I cut off the lower rubber strain relief.
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post #8 of 10
For headphones, not really. There are plenty of people who cut the shielding off of quad cable and just use the inner cores (2 for ground, left pos, right pos).

It would be hard to add mono jacks to those headphones, but generally that's what you would do for a removable cable.

Whatever wire you use, I wouldn't use anything thicker than 22-26 awg
post #9 of 10
Quote:
Originally Posted by DrGroove View Post

I'm not sure what you mean. Check my link, it's two separate teflon wires that would go to each earphone, so I would have 4 wires to solder to the stereo plug?

As I said you want to have shielded cable not twisted pair. You can have two separately shielded wires where you combine the shield sleeves to the ground like this cable.



Or you can have a single cable with two leads and one sleeve that you connect to both drivers.



Yes the mic cable is really think. That's why you should use a lighter gauge audio wire. Even the very light audio cable of thous earbuds are shielded.


Edited by Bit_reaper - 3/20/13 at 9:50pm
    
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post #10 of 10
EMI is not really a problem usually. Somehow I was being dumb and missed it was IEMs and not fullsize cans. Yeah I wouldn't run something thick for those.

Most cables that people use are a bit ungainly for this application, though apparently there are some audiophile favorites, I don't know what they are (or even if they're better with respect to weight, microphonics, etc. than alternatives).


IMHO consider scavenging the cable from a cheapo IEM or something you're not using. The cable construction is often more complicated than what even a good DIYer can manage, to get the weight, strength, microphonics, flexibility, etc. under control. Plenty of stock IEM cables are bad though... like maybe the one you're using now.

Or rather than scavenge, just get one of those aftermarket IEM cables. Some are commonly sold for the models with detachable cables. I'm not sure what's reasonably priced and not jacked up because of some silver / materials / cryo / whatever BS.
Edited by mikeaj - 3/20/13 at 9:57pm
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