Question about Telex Airman ANR 850 Headset

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Telex 850 wiring diagram or picture

I need to see a diagram or picture of the earcup speaker wiring to repair my headset. Do you have this?

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Sound became muffled(only lower frequencies) in both ears


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

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Does not work with telex 850


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 ;)

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I have had my headsets for 3 years, they work well, I have just noticed that the left ear pad is detaching from the base. How do I get fixed?


The ear cushions are attached to the earcup with plastic tabs that snap into the plastic in the earcup. The lower snaps may be unfastened. Try pressing the ear cushion firmly to the earcup around the lower edge to refasten the snaps. Do not press in the middle of the ear cushion - you may damage the internal microphone.

If this fails, you will need to remove the ear cushion by pulling it off the earcup and inspect for broken plastic where the tabs are on the ear cushion or where the tabs attach to the earcup. If a tab is broken on the earcup, replacement earcups are available from Bose for $35 per pair.

http://www.bose.com/controller?url=/shop_online/headphones/noise_cancelling_headphones/accessories/qc3_earcushionkit_acc.jsp

If the plastic in the earcup is broken, you can try to repair it or you can contact Bose about getting it repaired or replaced.

Jun 11, 2011 | Bose QuietComfort 3 Acoustic Noise...

1 Answer

I have a telex airmen 850. I tried calling to see if it was still under warranty- with no help. It's $200 flat rate fee to ship it there... Is there somewhere else I can send it to be fixed? It was working...


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 ;)

Apr 19, 2011 | Telex Radio Communications

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Hi, I am Kush Agarwal and I have been using the telex airman 850 for a while now. Just a couple of days back I noticed that the right side speaker of my headset is not working properly. The sound and the...


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 ;)

Aug 02, 2010 | Telex Radio Communications

1 Answer

Broken wire to my microphone on my lifechat lx-3000


You cant wire then directly there is a USB D-A chip that controls the headset converting to 1/8" mini plugs may work one for the mic and one stereo plug for the earcups

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5 Answers

Bose QC3 makes a high pitch noise when i press it against my ear


The design of these headphones includes a microphone on the outside and on the inside of each earcup. The outside microphone detects outside noise. The inside microphone monitors what you are hearing and when it detects that the outside noise is present inside, the active noise-canceling circuits remove that noise. This happens fast enough that you perceive a siginficant reduction in the outside noise getting to your ears.

The airspace inside the earcup is a tuned chamber defined by the foam in the ear cushion. This is important because with the inside microphone in close proximity, but at a 90-degree angle to the speaker, the circuit must be designed to eliminate the normal feedback that occurs. When you press the earcup close to your ear, you are changing the size and shape of the air chamber inside of the earcup thus directing more of the speaker sound toward the microphone than the design can compensate for causing audio feedback to occur. You are hearing that feedback. Removing your hand from the earcup should restore the shape of the air chamber allowing the circuits to return to normal operation.

If the feedback occurs too easily when you are NOT pressing on the earcup, then the foam may have weakened/deteriorated and it may be time to replace the ear cushion.

On my QC-3 headphones, I can cause the feedback squeal in both earcups, with the left earcup being more sensitive to the shape change than the right.

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1 Answer

Telex H-551 Digital USB Headset and Audio/Microphone


Call 1-800-898-6723 x 1 (if outsidethe USA call using SKYPE. It is free to call USA toll free numbers using SKYPE.

The driver is the same for P-500. It is about 14KB in size.

I got mine today from TELEX. It is 01:11 July 29, 2008, Indian Standard Time.

Best regards,
Randy.

Dec 23, 2007 | Telex H-551 Consumer Headset

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