Garmin GMA 340 Music Input

Possible simpler solution...

See if your player has a "line out" jack. If so, just put your plug from
your audio panel in that jack as it is properly impedance matched.

Although I have never seen one, you may have a "line out" jack that is
labeled differently. Check your units instructions and see if it provides a
way to hook it into your home stereo. If it does, connect to the jack shown
in those instructions.




"Mike Murdock" wrote in message
...
The problem is an impedance mismatch between your MP3 player's output and
the GMA340's music input. This website:

http://www.fremarllc.com/accessories/index.html

has an adapter that will fix the problem and allow you to get full volume.
On the web page, scroll down to "Stereo music impedance adapter"

Regards,

-Mike Murdock


"O. Sami Saydjari" wrote in message
...
I have a Garmin 340 panel and the installer put a music input jack for
it.
So, I tried plugging my portable MP3 player output into the music jack.
At
maximum volume on the MP3 player, the music was almost completely
inaudible. Does the signal need to be pre amplified in some way, or did
the installer mess something up?

-Sami
N2057M, Piper Turbo Arrow III

Mike Murdock wrote:
The problem is an impedance mismatch between your MP3 player's output and
the GMA340's music input. This website:

http://www.fremarllc.com/accessories/index.html

has an adapter that will fix the problem and allow you to get full volume.
On the web page, scroll down to "Stereo music impedance adapter"


Well, good grief! Just what did Garmin have in mind for this "music"
input option? Sounds more like a design flaw to me. My PS-Engineering
PMA6000 has the music inputs, and my iPod provides more than enough
volume. Not to mention the fact that I can completely disable the music
muting, if I so desire. Looks like Garmin kind of dropped the ball on
the whole music input idea.

Happy Flying!
Scott Skylane

O.,

the impedance mismatch is a problem - but yours sounds more dramatic
than it should be. Someone posted instructions on how to build an
impedance matcher yourself here a while ago, which I will repost below:

No need for field mods, nor for active components. If you have any
soldering skills, pick up a couple of 8/1000 ohm matching transformers
and a male/male mini-plug cable from Radio Shack. It's a minor
impedance mismatch problem. I put one together for my Cirrus and it
boosts volume by more than enough, and it's completely passive so
there's no batteries or other stuff. One of my fellow Cirrus brethren
came up with a great packaging hack--a small prescription pill bottle
is big enough to hold everything. Drill a hole in the bottom and in
the lid, tie knots for strain relief, and it's all quite tidy, if a
mite funny looking.

Dave;
Do you put one on each side (of the output)? And is that what I ask
for? An 8/1000 Ohm matching transformer? Thanks again

om: Dave Katz
Newsgroups: rec.aviation.owning
Subject: Music in Intercom
Date: 25 Jul 2002 10:00:59 -0700

Yep, one for each side if you want stereo. The low impedance side
(red/white) goes to the audio device, and the high impedance side
(green/blue) goes to the Garmin. You can snip off the black center
tap on the high side. I hooked the white and green leads to the
common (sleeve) connections on each side, but I don't suppose that
it matters so long as you're consistent (so you don't phase-reverse
one side.)

They were the only transformers for sale at the Radio Shack at which I
got mine. They may just be called "audio transformers" or somesuch,
but
it'll say 8 ohm/1000 ohm on the packaging.

--Dave

Thanks! I saw them at RatShack, about 3 bucks each. Total of about
12 bucks with all the other special goodies like a 2 dollar project
box and 4 dollar cord.

--
Thomas Borchert (EDDH)