wjm@lcuxc.UUCP (B. Mitchell) (04/29/85)
Yes, oxidation at contacts can be a bit of a problem, especially on low level
(interconnection) cables. One thing that is inexpensive (all it takes is
a bit of your time) is to periodically go through your system and unplug each
phono plug and then replug it in again, wiping the jack as you do. This will
clean off the contact surfaces. There are several products that are supposed
to prevent contact corrosion and oxidation, probably Tweek is the best known.
As for suitable connections, on low level lines, one needs a shielded connection
and the phono plug isn't too bad a choice (OK, BNC connectors, like those
used on microwave gear would be better, but they are a bit expensive for
mid-priced gear - have you looked at the price of microwave test gear in HP's
catalog lately?? :-) ). For speaker lines, you need something that can
handle a bit more current, and since it is low impedance, shielding isn't
needed - Screw terminals and binding posts are a reasonable choice here.
Regards,
Bill Mitchell ({ihnp4!}lcuxc!wjm)