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Bose ANR Jacks and Grounding, Alternator AC Limits

 
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donvansanten(at)gmail.com
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PostPosted: Mon Dec 11, 2017 11:10 am    Post subject: Bose ANR Jacks and Grounding, Alternator AC Limits Reply with quote

The B/w wires are connected to the mic and headphone shields at the Lemo plug end.The shields are floating at the Lemo plug end The B/W wire is supposed to connect to the existing shieldsfor the mic and phones. In my case this would have left 3 feet of shield ground wire and the normal is to keep this wire leng to under 3 inches.I did this by cutting the B/W wire off at the lemo end. I left the shield floating at the Lemo end and joined the shields where I spliced into the corespnoding wires from the audio panel.The fully shielded conductors then had the shields terminated at the audio panel.I believe that using three feet of shield ground wire was the entry point of my noise issue. The problem was eliminated but I can not prove that my fix was the solution.

On Monday, December 11, 2017, Airdog77 <Airdog77(at)gmail.com (Airdog77(at)gmail.com)> wrote:
[quote] --> AeroElectric-List message posted by: "Airdog77" <Airdog77(at)gmail.com (Airdog77(at)gmail.com)>

Hi Don,

I have mine wired up like Jared's, still in build mode so can't test yet.  But just to clarify your statement:
> I just finished a new install of two Lemo plugs and this time I cut the black/white wires off
Meaning you cut them off totally?  No other action with these 2 black/white wires?
> spliced the shields from the head phone and mic cables to the audio panel shield wires.
Essentially per a traditional headset jack install?

Curious about this since my LEMO plug sits adjacent to the standard plugs.  I wired per Bose instructions.  My black/white wires connect to the white/blue wire (low) tab of the jacks.

Since the black/white wires are simply a wire extension of each cable pair (phone & mic/ptt) ground shield, is it fair to say in sticking with the LEMO+standard jacks configuration that IF I hear noise I should disconnect the black/white wires from each jack tab and subsequently wire each black/white wire into the respective standard jack's cable shields?

To be clear, my headset jack wire shields currently simply terminate (no connection) at the jack end and are just "floating."

Cheers,
Wade

--------
Airdog
Wade Parton
Building Long-EZ N916WP
www.longezpush.com


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Airdog77



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Location: Northern Virginia

PostPosted: Tue Dec 12, 2017 7:50 am    Post subject: Re: Bose ANR Jacks and Grounding, Alternator AC Limits Reply with quote

Roger... Thanks Don!

I'm attempting to keep good notes on what you have done for possible troubleshooting later on.


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Wade Parton
Building Long-EZ N916WP
www.longezpush.com
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