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Bill,

I leaped before I looked... The other posters are absolutely correct:
By using a simple turns ratio transformer to match your impedance,
you _could_ generate some impressive voltages.  (I'll leave the
qualifications on "could" aside).

I really feel terrible that I didn't think your situation through
before giving you a response.  My apologies.  The idea of series resistors is an acceptable approach but doesn't exactly
solve your impedance matching requirement.  Another aspect to consider,
that has been alluded to but not expressed directly, is the voltage parameters.  The voltage presented across an 8 ohm load (driven by
the FM/Cassette unit) will vary based on the power output of you
FM/Cassette deck.  At the same time, your audio panel will have a very
definite input voltage (range) requirement.  Exceed it and you distort,
exceed it a lot and you _could_ do damage.  Too low a voltage and
the volume is inadequate.

I checked Sporty's and AS and couldn't believe that they don't carry
such a converter.

I'm in the process of researching a COTS (Commercial off the shelf)
solution for you.

-Ed Mccauley
Lancair IVP
Milford, NJ

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