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Convert a radio tape player to an MP3 Boombox

Step 7Hook it up and try it out

Hook it up and try it out
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  • C:\Documents and Settings\Daddy\My Documents\My Pictures\instructable\MP3 Boombox Try.jpg
  • C:\Documents and Settings\Daddy\My Documents\My Pictures\instructable\headphones jack front.jpg
Ok, I think we're all done, so we will now hook up the MP3 player and see how it works before putting it all back together.

Does it work? Will there be sound?

Hurray, it works!! There was a lot of distortion though and I had to turn the MP3 player all the way down to "1". It is still a bit strong with a little distortion though. It is probably because the headphones output of the player is still much stronger than the output that the tape head had.

I have an idea though. When I was figuring out the old tape player's headphone jack (which I "repurposed" as the input from the MP3 player), I saw that while the normal output of the tape player went straight to the speakers, the headphones output was routed through a couple of resistors (one per channel) to drop the strength of the output down to headphones level (to not blow the headphones...*or your ears*).
I'll try re-routing the MP3 input through those resistors and see if that helps. The second pane below shows them.
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Author:HappyDad