There used to be little two transistor gadgets made for exactly this purpose
back in the 70s. Final stage an emitter follower of course.
It is surprising though haw many outputs on hi fi are affected by capacity
in leads. It has to be poor design of the output circuit in my view. Not so
mbad these days, but it used to be a real pain.

Brian

--
Brian Gaff -
Note:- In order to reduce spam, any email without 'Brian Gaff'
in the display name may be lost.
Blind user, so no pictures please!
"Trevor Wilson" wrote in message
...

"Ian Bell" wrote in message
...
I need to send an audio signal from a 50K ohm source over a distance of a
couple of feet in a screened cable. However, most audio coax seems to be
about 100pF/ft so 2ft of this and 50K will turn over just below 16KHz. So,
anyone know a source of low capacitance audio coax?


**Use a buffer first. A 50k Ohm source is stupidly high. A high quality
buffer can be assembled for a few pennies.

If you must persist in using broken equipment, you could look at a variant
of RG59/U coax. Capacitances figure range from 50pF ~ 70pF/Metre. Belden
have a cable called 1192A, which exhibits around 40pF/Metre.

Use a buffer. MUCH smarter.


--
Trevor Wilson
www.rageaudio.com.au