My Sennheiser HD 205 suddenly had a problem with its jack. You have to move its top, nearest to the cord, to get a sound on the other ear, probably it was pulled and something went loose. I spliced it open to replace the jack, but my replacement only has 3 wires - red, white and yellow. While my Senheiser HD 205 has 4 - Blue, Red and 2 copper wires. So how do I connect the replacement jack to the headphones using these wires?
Audio Players & Recorders - Sennheiser - HD 205 Professional Headphones
Answers & Comments
The two copper wires on your headphones are independent grounds for each channel. Twist them together and attach them to the ground cable ( black) of the new plug. The colored wires of the headphone correspond to the live wires of each channel, and the plug should have the same colors. Wiring together the grounds will not affect in any way the stereo separation, it is just that each ear needs its own ground. Cheaper headsets just transfer the ground from one ear to the other one through the metal headband.