Hi Luigi

If the problem you are trying to fix is that you are hearing alternator
whine or strobe squeal in your headphone audio, then shielding the audio
wiring is not likely to get rid of it... It matters not if the shielded
wire has one or two conductors inside...

Ground loops in the audio wiring is a more likely cause.
I have previously written extensively on this topic.

Go to www.google.com

click on "Groups"

click on "Advanced groups search"

type "alternator whine skylane" in the "with all the words" box

type "rec.aviation.*" in the "Return only messages from the newsgroup"
box

click on "Google Search"

Click on the "complete thread" box for any of the "hits"

Write back if you need more info

MikeM
Skylane '1MM
Pacer '00Z


gix wrote:

Hi
i'm an italian student and exuse for my english;as from object i have a
question for the audio line of my panel audio(GMA 340 garmin),exsit a really
advantage to use bipolar shielded wire twisted respect a normal bipolar wire
shielded for reduce the noise in my headphones.
If you have a document on this matter for me is very important
Thank you in advance
Bye Luigi