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Don McIntosh
Joined: 02 Jul 2007
Posts: 24
Location: Sandpoint, Idaho
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 Posted: Mon Aug 10, 2009 7:41 pm Post subject: music input to intercom |
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I finished the wiring harness for my PS 1000II, hooked it up and the intercom and radio both seem to work good. The music input...not so good. When I plugged in my Walkman (I know, I know, but my wife just gave it to me for my birthday, it isn't being changed soon!) even with everything turned all the way up, I could hardly hear the music. So I checked the circuit with the ohm meter between music hi and music low and I get half a circuit - not a full short, just half. I am using the shields for all the lo sides, connected them all together with pigtails and then to ground at the intercom. Any ideas?
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_________________
Don McIntosh
Kitfox Series 7
Jabiru 3300 |
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rv-9a-online(at)telus.net
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| Posted: Mon Aug 10, 2009 9:20 pm Post subject: music input to intercom |
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You have a stereo source feeding a monophonic input, so you need to combine
the L and R channel outputs of your Walkman into the single channel input.
Usually, a couple of resistors connected together will take care of this
(150 ohms will work). It's best to use a stereo jack and wire the resistors
to the back of it. One resistor to L, one to R and connect the free ends
together to the mono input of the intercom (using the appropriate cable).
Good Luck
Vern Little
www.vx-aviation.com
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