Very clean! Well done. I also had that issue. I used a braided cable (which was great for preventing snags) but when it rubbed on the edge of the table it would send that vibration straight into the headphones. I wonder if getting a short extension cable would work to absorb some of that...

Looks like they did some sort of image moving and my post didn't get automatically upgraded. Thanks, I've updated the post to point to the images again.

Oh, in that case just jump the ring and sleeve connections. Technically not needed, you can just use the tip and sleeve

First, thank you for the interest and kind words. Second, you said you did a "double" jack mod? You put a TRS jack in each side of the headphones? So a total of 2 jacks? This is not what I did. A single TRS (tip, ring, sleeve) connection supports two audio channels. I only put a single jack in...

For anyone interested, this mod has held up really well. Love that I can pack them into a laptop bag or backpack without the worry of a cable being broken off.

@tubey1 The red is the positive for one side and green is the positive for the other side. I don't remember which is which. The gold/uncolored wire in each pair of wires should be tied together and attached to the "sleeve" contact on the jack. That's the one that sticks out the side in my case...

Thanks for the encouragement. Here are some rather late responses.   @totalnoob43 I bought that one from Radio Shack.    @jgc731 There are two wires coming from the left speaker and two from the right that come over the headband. Both pairs have a ground wire (usually a bit larger and bare...

It works for both ears. I just took the picture before soldering the right side wires on. The jack goes on the left side and the right side wires go up and over the headband.

Thanks. I will post the wireless conversion if/when I do it.   While just transplanting the RS120 guts would work, It's not my first choice. For one thing, the circuit boards are bigger than they need to be.   My ultimate headset would have the following features (in order of how...

I found the threads on here about the HD280 "blue tak" mod helpful in taking apart my set to add a jack so I thought I reciprocate and post a thread showing how I added a jack to replace the built-in cord. Update: Executor32 found a really nice headphone jack on Amazon, I've quoted his post...