radio noise supppression

[terry]

I have been thinking of attaching wiring to the speaker of a little transistor
radio I have and attach these wires in turn to a speaker behind the header of my 36 ford. I would put the radio in the glove compartment. My question
is, will radio noise still factor in or does this just happen when the radio is
part of the car's electrical system? Would I have to insulate the speaker
from the metal header above the windshield?

[Old Henry]

I'm afraid that your question may not be able to be answered definitively without just trying what you propose. I've been doing essentially the same thing in my car for years and never had static as long as I used a portable CD player for my source of sound but as soon as I switched to an MP3 player I had uncontrollable static. http://www.fordbarn.com/forum/showthread.php?t=124782

The other thought I had is that the earphone jack/speaker output on your portable radio may not put out enough power to run your speaker at an acceptable level and you may need to boost the signal a bit with a headphone amplifier. If you decide to try that shop for mili-watt output to get the highest you can get. The are not all created equal.

[terry]

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Thanks Henry. Your earlier thread about this problem has given me a lot to think about. Terry