Oh man, I just wrote up a complete tutorial for doing this mod, and the editor blew up and lost it all ...
Here we go again.
I recently bought some ER•4PTs, loving the sound, but hating the "microphonics" (technically, it's "cable noise" as microphonics is something entirely different, but anyways ...). I used the info in this thread to buy and install awwan's AW Audio ER•4 adapters for Shure cables and am now in Etymotic Nirvana.
awwan has adapters for 4S, 4P and 4B models, with the necessary resistors (and capacitors for 4B) inside the adapter casing. If you have the 4S, you can convert it to a 4P by using the "P" adapter and then go back to 4S at any time using the P-to-S adapter (basically a 75 Ω resistor in series), which awwan also sells for much less than the OEM unit.
This is the 4P adapter - Shure cable version that I bought from awwan.
Note: This mod likely voids your warranty, but you can easily revert back to the stock cable should you ever need to send your ER•4 back to Etymotic for servicing.
On with the tutorial!
While waiting for the adapters and cable to arrive, I used this stopgap method (found here) to wear them more easily over-ear. The stock cables were still really noisy. Don't think you can find a noiser cable, braided or not.
I used a pair of side cutters to start prying the stock cable connectors off of the armature enclosure. Work slowly from all directions to avoid bending the pins.
When the cutters start touch the pins, find something thin to stick between the pins to continue prying the connector off, like a very small screwdriver or a nail (I used an old dental hygenist's scaling tool I got from my dentist a long time ago - can't remember what I wanted it for). Work slowly to pull the connector straight out so as not to bend the pins.
When it's off, it looks like this. The fatter pointy pin goes into the larger hole with the visible copper lining.
This is the orientation of the AW Audio adapter compared to the stock connector. I started with the left earpiece, so you can see a blue "P" indicating the left side and 4P version.
Now insert the adapter with the orientation shown (fatter pointy pin goes into the larger hole with the visible copper lining). Carefully press the adapter pins into the armature enclosure, being careful not to bend the pins. I was able to do it with just finger pressure.
And voilà! We're ready to connect the Shure cable. The adapter with the red "P" label is for the right earpiece.
And the finished product. I used the Shure CBL-M-K cable with 1-button remote for convenience with my Samsung Note 3 and Galaxy S3.
How they look worn over-ear. The Shure cables with remote have a bend that their other cables don't. This doesn't seem to be a problem as you can insert the ER•4s at whatever orientation works for you, either for over-ear or straight down.
Happy "microphonics free" listening!
Edited by gixxerwimp - 2/24/15 at 6:18pm