[sdiy] Boombox/Synth Mod

[dj hohum]

Depends what you mean by "tape deck output."  The tape deck output is
probably just the head output which is a very low level signal.
Moreover, simply wire oring the two signals together will send synth
output into the tape head which MIGHT erase, or at least, affect the
tape recording permanently.

The simplest way to do this is to feed the synth output through a 10k
resistor (or so) to the wiper (center terminal) of the volume control.
If the boom box is stereo, use two resistors tied to each center wiper
and tie the other end of the two resistors together and attach it to
your synth.

On 6/22/07, BR <phonotron at yahoo.com> wrote:
> Hey all,
>
>        I'm glad to be here on this board amongst my
> people :]
> I've got a project in mind, to build a simple synth
> instrument into a vintage boombox that I have, and I'm
> wondering if there's any reason I couldn't use the
> tape-deck's audio out as the "oscillator" input to the
> synth circuit?  Ideally, I'd like to be able to play
> tapes and play the synth at the same time or
> seperately, but also be able to modulate the taped
> sounds via the synthesizer.  I have some knowledge of
> electronics, and synthesizers, but have never done any
> circuit designing of my own.  I'm thinking of using
> the "weird sound generator" circuit from -
> http://www.musicfromouterspace.com/analogsynth/YOUR_FIRST_SYNTH/YOUR_FIRST_SYNTH.html
> as a starting point.  Any input would be appreciated,
>
> Thanks,
> BR
>
>
>
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