AMX240 and Bose Aviation X issue

Airplane is C172M with 14V electrical, if that helps.

Thanks and I will try that. I talked to one person at Bose tech support and he suggested that if set to mono and being used on a audio panel with stereo sound, it would simply behave as mono. My dipswitch was set to mono on my X headset, so I've changed it to stereo and will definitely see if that makes a difference.

It was a clean install and all the wiring is supposed to be new. When I changed the dipswitch to stereo its louder but audio is only in one ear. We swapped out the IFD540 with another one, and then swapped out with a Garmin GNS530 and problem is still there. Odd how Only the Bose X, and only in the pilot side.

I think now its either the audio panel or the wiring. I am not finding anything online about compatibility issues with this headset and audio panel.

I just had the AMX240 put in along with new IFD540 and IFD440. I was getting a random, every 30 seconds or so, squelch sound. I decided to start the elimination process by unplugging my Bose headset on the right seat, and sure enough the problem went away. I decided to buy new Bose A20s since my headsets were sold old, and sure enough, problem solved so far. Not 100% sure, but the headset had something wrong with them. Oddly enough, they work with my old Garmin avionics just fine. With the new Bose A20s, much clearer also.

I had same intermittent squelch-break with my AMX240 and Co-pilot Bose-X headset.  It usually broke squelch when in "chop" or when mic. was too near air-vent.

"Problems" seems to be an overstatement in my opinion. The AMX240 does not auto mute the 2nd frequency when you are using the Monitor function, by design. Most of us who use the 240 don't care and actually prefer it that way but some folks really want that feature.

It seems very isolated to a few folks. I fly with Bose headsets and the 240 and haven't experienced anything like that in the 3 years I've been doing so.

Thanks Tom, I think the KISS principle is the overriding factor for me...Thanks for sharing!

Dan

Sorry I had not followed up on my original post, but just came across this thread and here is my update. It turns out the installer had bent a pin in the harness during the install. Straightening the pin resolved two issues:

1. The Bose headset and all headsets now transmit and receive normal volume.

2. Audio from the audio input on the co-pilot side (audio that patches to the rear of the panel) is now normal volume on both sides.

I usually fly with my Lightspeed Zulu 2 headset, while my front seat pax will use my Bose X headset. Recently I swapped headsets with my fiance and flew with the Bose. I did find its max volume was useable, but a bit lower than I was accustomed, requiring me to turn up the volume on my IFD 540 some. However I am sending my Bose headsets to them for a clean and check, and I suspect I have an issue with my headset cable, and the dipswitches, so I don' think its an issue with the audio panel.

Thanks for the help on this. My only lingering issue with the AMX240 is the backlight doesn't get bright enough to read the buttons in daylight. The IFD540 buttons are much brighter. I have been told there could be some issues with the rheostat compatibilty with older C172's (mine is a 1976 172M), so it may be a matter of getting a newer rheostat, or a change in how its wired. I am a bit annoyed that my installer returned the plane to me with both these issues, but I imagine this backlight/rheostat issue is because I am flying an antique.

I am having the same issue. If I put the Bose switches on Stereo, only the left side of the Bose headset works. If I put the switch on mono, both sides of the Bose headsets work. I am guessing not stereo. Help!!