BEM PRODUCTIONS
Broadcast Television Services of Austin, Texas
Step 1) determine which leg on LEDs are green and which are red by running DC current through them. Positive to negative is green in this discussion. The LEDs need to be marked #2 and #3 to represent the 2 and 3 legs.
Step 2) solder the 1K resistors to the green leg of each LED.
Step 3) Solder both red legs of the LEDs to pin 1 of the XLR
Step 4) Solder the green leg of the #2 LED to pin 2 of the XLR
Step 5) Solder the green leg of the #3 LED to pin 3 of the XLR
Troubleshooting notes: if the LEDs light red the polarity is reversed with leg one to the respective side. Leg #2 is considered the primary side and is for phantom power, IFB and intercom. Leg #3 is for Ch2 intercom but non interrupt IFB will not light the LED.
You'll need to buy Radio Shack Part Number 277-1008C. It is a mini amplifier with female mini jack input and output plus a speaker. Cost is around $15.
Pin 1 = Shield for the microphone
Pin 2 = Hot lead for microphone
Pin 3 = Return for the headsets speaker
Pin 4 = Speaker hot lead channel 1 (both sides on 4 pin systems)
Pin 5 = Speaker hot lead channel 2
Supplies: 4 pin male XLR, mini amplifier (mentioned above), two male mini jacks and about 8" of shielded AWG 22 two pair wire.
Step 1) Input mini jack tip to XLR pin 2 and input mini jack ring to XLR pin 1
Step 2) Output mini jack tip to XLR pin 4 and output mini jack ring to XLR pin 3
Supplies: 5 pin male XLR, mini amplifier (mentioned above), two male mini jacks and about 8" of shielded AWG 22 two pair wire.
Step 1) Input mini jack tip to XLR pin 2 and input mini jack ring to XLR pin 1
Step 2) Output mini jack tip to XLR pin 4 and output mini jack ring to XLR pin 3
Step 3) make a jumper across XLR pin 4 and 5