Dear Listers,
I bought a couple pairs of the new Bose A20's for the RV-8 and they are very
nice.
NR is better than the Bose X's and they seem to fit my head a little better
too.
But I quickly discovered that with the A20's you now have to hit the NR Power
button
*every time* you start the aircraft even if you have them panel powered.
The older Bose X headsets have a slide switch for the NR power and so you can
just put the slide switch in the On position and not worry about it.
I really didn't like having to turn the NR on all the time and having to remind
my passengers about it, so I came up with a modification that will automatically
turn the NR on when panel power is applied. Its pretty simple, but requires
some special tools. Its completely self-contained inside the Control Module
and works great. The modification is generally only for installations that
are panel-powered, but you could do the modification to a unit that is normally
battery powered with no adverse effect. With the modification, the NR Power
button will work normally in battery power installations.
I created web page on the procedure including step-by-step photos and
instructions.
Feedback is welcome.
http://www.matronics.com/BoseA20AutoOnModification/
Matt
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Matt Dralle
RV-8 #82880 N998RV "Ruby Vixen"
http://www.mattsrv8.com - Matt's Complete RV-8 Construction Log
http://www.mattsrv8.com/Mishap - Landing Mishap Rebuild Log
http://www.youtube.com/MattsRV8 - Matt's RV-8 HDTV YouTube Channel
Status: 170+ Hours TTSN - Rebuilding Fuselage After Landing Mishap...
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