Telex Airman 850 wiring diagram

2004 Hyundai XG350 Car Stereo Radio Wiring Diagram
Car Radio Constant 12v+ Wire: Red
Car Radio Switched 12v+ Wire: White/Green
Car Radio Ground Wire: Black
Car Radio Illumination Wire: Brown/White
Car Stereo Dimmer Wire: Green
Left Front Speaker Positive Wire (+): Brown/White
Left Front Speaker Negative Wire (-): Black/White
Right Front Speaker Positive Wire (+): Brown/Yellow
Right Front Speaker Negative Wire (-): Black/Yellow
Left Rear Speaker Positive Wire (+): Brown/Red
Left Rear Speaker Negative Wire (-): Black/Red
Right Rear Speaker Positive Wire (+): Brown/White
Right Rear Speaker Negative Wire (-): Black/White

An equalizer circuit or filter? No idea where this would as you only give the result not total environment.

Don't know if you are using the PA-97 adapter, it should work without any problems. I would check the potentiometer "gain" adjust on the microphone assembly. Hope this helps ;)

Don't know why answers for different type of headsets shown up on a question about the Telex 850. Probably there is an issue with the cord. The cord has two shielded "double" wires on each pair. The ones for the mic are "white" and "light blue". May be one is cut preventing the mic to work. Look around for a local avionics shop, they should be able to fix it. Hope this helps ;)

Old question, but may be somebody else is experiencing the same issue. The earcup without the boom has a noise cancelling board, so it could be one of the wires that goes from one board to the other one. Gently take the earcup off and look at the 4 wires that are soldered on top (red, black, shield and white). If one of these is cut, the speaker/anr won't work. You will need a very small soldering iron to repair it (no more than 15 - 20 watts). Good luck, hope this helps ;)

1= shield and red
2= white
3= blue
4= black

yellow-N/C
maybe this will help

yellow constant
red switch
black is ground
blue power antenna if any
dimmer i/illumination is optional

front- right-red/green-+
front-left-blue/green-+
rear-right-red/yellow-+
rear-left-blue/yellow-+

these are all the positive side wire for all your spkr

red and sheild 1 pin
white 2
blue 3
black 4

I have the circuitry guide for the DSP box. I'm going to consider the top of the board the part with five connections, and the bottom is the part with eight connections.
From left to right on the top, the insulation colors are: red, white, green, black, no insulation.
From the left to right on the bottom, the insulation colors are: white, copper, copper/green, blue/green, red/green, red, copper/blue, green.