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  #1  
Old 06-20-2018, 11:17 AM
mwardle7 mwardle7 is offline
 
Join Date: Oct 2009
Location: Utah
Posts: 52
Default External Audio Entertainment Wiring

I am interested in installing a marine-style digital media receiver like this:


(Example shown is a Clarion GR10BT)

Or, as an alternative, I would like to install a bluetooth audio adapter, like this:


(Example shown is a JL Audio MBT-RX)

I have the G3X system in an RV-12.

Can I simply wire the left/right audio connections directly into the aux music input connections (pins 2 & 20 of the Fuselage wiring harness)? In the case of the digital media receiver, they are almost all amplified - will this be a problem? In the case of the bluetooth audio receiver, is it simply a manner of cutting the RCA connectors and wiring them directly into the aux music wires?

I found this in the GTR 200 Installation Manual, but I don't know what the numbers mean, nor do I know what "LO" is:



Thanks in advance for the advice!

Last edited by mwardle7 : 06-20-2018 at 11:57 AM.
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  #2  
Old 06-20-2018, 12:32 PM
upperdeck upperdeck is offline
 
Join Date: Dec 2009
Location: Menomonee Falls, WI
Posts: 97
Default

The numbers are the pins in the wiring harness that you would connect the wires to. Lo is ground, as in the ground for the RCA audio leads. I doubt you would be able to use an amplified signal without reducing it somehow to line level.

Last edited by upperdeck : 06-20-2018 at 12:38 PM.
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  #3  
Old 06-20-2018, 12:36 PM
mwardle7 mwardle7 is offline
 
Join Date: Oct 2009
Location: Utah
Posts: 52
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Got it. LO is audio cable ground. How would you reduce it to line level? Thank you!
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  #4  
Old 06-20-2018, 12:50 PM
upperdeck upperdeck is offline
 
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Location: Menomonee Falls, WI
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The specs on the Clarion show it has 4 channel preamp outputs. That means it is outputting at line level, ie, not amplified. The second item is not an amplifier either, so it would output at line level also.

For the Clarion, you would connect the front audio outputs the the GTR200 and make sure the Clarion fade control (if it has it) is 100% to the front.

If all you are looking for is one Bluetooth input, go with the hidden JL Audio. Cheaper and easier installation.

Last edited by upperdeck : 06-20-2018 at 12:55 PM.
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  #5  
Old 06-20-2018, 12:56 PM
mwardle7 mwardle7 is offline
 
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Location: Utah
Posts: 52
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Very helpful. Thank you!
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  #6  
Old 06-20-2018, 04:48 PM
rv7charlie rv7charlie is online now
 
Join Date: May 2006
Location: Pocahontas MS
Posts: 2,907
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With consumer grade line level outputs, you're more likely to have too little volume than too much. Line outs expect to see a 10,000 to 50,000 ohm load; not 600. Many 'car stereo' systems' speaker level outputs can safely drive aviation type 600 inputs simply by turning down the volume on the stereo.

Best to just try your source of choice, and if level is low, you can add an inline booster preamp. Choose the right one, and it can double as a 'summing amp' to allow additional audio sources, like stall warnings, etc.

Charlie
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  #7  
Old 06-20-2018, 09:26 PM
RFSchaller RFSchaller is offline
 
Join Date: Oct 2010
Location: Phoenix, AZ
Posts: 2,245
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I do it on the cheap ó- plug my iPod into the audio of neutrons of my Bose X.
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  #8  
Old 06-20-2018, 09:27 PM
RFSchaller RFSchaller is offline
 
Join Date: Oct 2010
Location: Phoenix, AZ
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Donít you love spell check? Somehow ďaudio inputĒ got involved in neutrons!
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  #9  
Old 06-20-2018, 09:48 PM
rv7charlie rv7charlie is online now
 
Join Date: May 2006
Location: Pocahontas MS
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Yeah, I was wondering what neutrons sounded like...

;-)
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  #10  
Old 06-20-2018, 11:41 PM
krwalsh krwalsh is offline
 
Join Date: Nov 2009
Location: San Francisco, CA
Posts: 292
Default Two references

Here are two references Iíve bookmarked from past discussions:

http://www.myrv10.com/N104CD/upgrade...228/index.html

http://www.vx-aviation.com/sprocket/audio.htm

For now I just have several aux jacks in my plane with switching jacks set up to audio 1 and 2 to my PMA9000EX. Someday iíll Add a Bluetooth adapter to get Bluetooth streaming in capability per the first reference.
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Kevin R. Walsh
Cozy Mk-IV
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