Tesoro De Leon Changing Audio Pitch

[Silver Dollar]

If your handy you could use many different music synthesizer circuits to mod the audio.
There is a ring modulator which takes 2 frequencies and produces the sum and differences.
A simple tone control might take the edge off the sound. I'm not sure what change you
might need to be able to hear better? Higher pitch? Lower pitch?

A simple divider might give you lower pitch. You could convert the audio to a voltage then
send it into a VCO...

This all would take some digging into the unit and experimenting to get the proper result...

[Wikinger]

@Silver Dollar - Sounds good to me. I'll keep this in mind. The audio output can be used to drive a different, higher pitched circuit audio device. Would be a small box and can contain a 9V. Very good advice. Thanks for this!

Tesoro USA suggested to contact their german distributor. But this guy is a jerk. Still waiting about informations about another big detector brand which he is also the german distributor for. Ordered these more than 6 month ago.
When I got the DeLion new I tried to register it online via mail to tesro, but got back a mail this is only for U.S. citizen. And with this I had TWO tesros. My FIRST and my LAST one.

Thank you all for your help and advice. This is really appreciated.

Wishing you all a healthy and successful New Year 2015.

Over And Out