Clip off the RCA end of the ready-made audio adapter cable just below the rip stop (the reinforced section). The 1/8" stereo mini plug on the other end stays as-is.
Separate about 18" of the dual stereo cable.
Stripping off 3/4" of the outer jacket off of both ends.
Separate the thin copper strands from the insulated wire. Twist the strands togther into one wire.
Both 'ground" wires are twisted. Next, the right (red) and left (whte) wires need to have all but 1/4" of the vinyl insulation removed ,..
The red and whte wires have all but 1/4" of insulation removed with wire strippers.
All four wires are "tinned" one at a time by holding the soldering iron against the wire and lightly touching the solder to the heated wire. Let the hot wire melt the solder and the liquid solder spread through the twisted copper wires. Wait 1-3 seconds after the smoke stops rising to remove the heat.
All four wires have been "tinned." The red and white "hot" wires have been tiined right up to the vinyl jackets and the two, twisted "ground" wires have been tinned all the way down to where they touch the black, outer jacket.
Use the diagonal pliers to cut off both wires about 1/16" of an inch above the red or white wire's jacket. Trim both cables this way.
This is what they should look like when all four wires have been tinned and trimmed.
Use the small pliers to bend the tips of all four wires 90 degrees.
Pinch both wires for each cable together and bend them both at the same time.
When you are finished, all four leads should be bent at the same spot and in the same direction.
Position the vice and the "helping hands" alligator clips under the lamp with the magnifying glass. Very gently tighten the jaws of the vice around one mic capsule.
Look for the thin metal "trace" between the outside metal surround of the capsule and one of the contacts in the center area. The contact with the "trace" is called the ground. The wire in the cable that does NOT have a red or white insulation jacket (the GROUND or SHIELD wire) is connected to the contact with the "trace."
Click on Picture to Magnify it.
While viewing through the magnifying glass, carefully align the "foot" of the HOT" wire so it is in the center of the HOT contact. No part of the NOT wire can touch any other part of the mic execpt the HOT contact.
You can reposition the wire by moving the "helping hands" aligator clip or the vice. A small amount of pressure down on the contact will help keep the parts from springing apart when the solder is melted.
When the Hot wire is perfectly aligned, rest the wrist of the arm holding the soldering iron on the table to steady it
To melt the solder, hold the tip of the iron horizontally and and lower it until it gently touchpresses down on the tinned wire on top of the contact.
In a few seconds the heat will melt the solder in the tinned wire and the solder in the contact and fuse them together. Count one beat after you see smoke rise and gently lift the tip of the soldering gun straight up.
Follw the same alignment/soldering process to connect the GROUND wire to the GROUND mic capsule contact.
Repeat the same process to attach the capsule to the other the other cable. Next see if they work by plugging them into your Hi-MD recorder.
If one or both don't work, examine both contacts on the capsule(s) in question. Is the hot wire is touching the side or the other contact? If it is, unsolder the problem wire by touching the contact with the soldering iron while pulling up gently on the wire. Sometimes you need to restrip the wires and start over. If you think the contacts on the capsules are shorted, test it with a multimeter. The capsules should show about 1400 ohms resistance between the two contacts.
OKay, you got them plugged in and working. Check to see if the sound quality coming from the two capsules matches. Slowly bring the capsules together,.. does the sound move to the center? With the capsules as close togther as you can get them, listen for buzzing, humming or hiss that is in one ear that is not in the other.
Cut 2, 1.5" long pieces of 1/4" daimeter heat shrink tubing (Pictured is 3/8" which was too big).
Slip the tubing over the capsule and align one end with the front of the capsule.
Use a heat-gun or a Bic Lighter to warm-up the heatshrink tubing. Quickly wave the lighter under it so the heat spreads evenly. Be careful to not get the heat near the front of the capsules!! Remember, heat rises.
Capsules after the heat shrink tubing has been applied.