3.5mm mini jack prep and soldering. Crash course in mini jack wiring and soldering. A basic recabling mod.
First thing first, choose a cable and 3.5mm TRS mini jack to replace the standard one. A quick lesson on TRS jack or some call it mini stereo plug. This plug has 3 section or conductor, divided by the 2 black insulating rings. On a headphone stereo mini jack the Tip/Left channel is for left ear and Ring/Right or the middle contact is for the right ear and Ground/Sleeve or the last contact is for ground.
The easiest way to remember which is left, right and ground is by holding the jack horizontally in front of you using your right hand, with the pointed tip pointing to your left. The Tip ( pointed end ) is Left channel since it pointing to your left, sometimes known as negative ( - ) and represented by red wire, the section next to the tip in between the two insulating black ring is the Ring or Right, sometimes known as positive ( + ) and the conductor with the most contact area is the sleeve or ground. Generally the transducer is like a speaker, it works with one wire supplying the audio signal and another for ground. Both the Left and Right channel in a headphone share the same conductor/sleeve on the mini jack for ground.
Expose the copper strands on both white ground wire and twist them together, this end will be soldered to the ground contact on the mini jack. I don't use a wire stripper because i don't want to loose any copper strand, people usually talk about how good a wire is by the number of copper strands it has and they loose half of the number of strands when stripping the insulation.
Melting and pulling of the insulator is a sure way of minimizing loss of strands. At this point it doesn't matter which of the 2 blue wires is left or right. I will show you how to tell them apart later. Right now just strip them and prepare them for soldering.
Strip and expose all wire ends, Give then a twist to prepare them for tinning. Tinning helps the wire ends stick during soldering. Wires soak up molten tin in contact, saturating them with tin makes it easier during soldering minimizing contact time. Don't forget to tin the 3 contact on the TRS jack.
Twist 2 of the white wire on the TRS end together this will be the ground.
Unscrew the TRS jack and you will see 3 conductor, the longest contact with the crimp cable retainer is the where the 2 white ground cable will be solder, this is ground conductor, the smallest or shortest conductor is the Tip/Left and the one i have not mention about is the Sleeve/Right.
At this point the cable is ready to be solder to the transducer, use a sucker to remove excess tin on the 2 contacts on the transducer. At this point the recabling is done for those who choose to do this mod.
Use a multimeter to check if there are any loose or poor contact, if u don't have a multimeter use a battery and flash light bulb as a tester.
Plug the finished wire to a music source and check if everything is working properly. This completes the wiring. My next video will be on improving the looks of the headphone.
I plan to solder a female phono to the transducer.
IF THE VIDEO IS TO DARK ADJUST THE COLOR/CONTRAS/ BRIGHTNESS SETTING OF YOUR MONITOR. BEST SETTING IS DEFAULT.
I'M IN THE PROCESS OF PUTTING VOICE OVER.
MANY VIDEO STILL NEED TO BE UPLOADED, TOPIC REGARDING THIS MOD IS STILL AT EDITORIAL STAGES, I WILL DO MY BEST TO UPLOAD THEM.
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