"hhgggff" wrote in message
om...

I was thinking of using an old cars cassette tape, but I have an old 9
volt
portable cassette handy.

Well, In the end I just plugged it in and it works,correct speed.

tafankuverymuch

If you're running a 9V cassette player from a car battery, don't run it at
full volume - the audio output might be the weak link.