On Wed, 24 Jan 2007 15:34:44 -0000, "N Cook"
wrote:

High power combos that go intermittant
after a period of use.

If they use
an elbow jack on the amp to speaker link ,
replace with conventional, if poor manufacture.
Check the internal construction and if
poor mechanical connection at the elbow means
the shaft can turn , with pliers , when cold,
so a resistance and voltage drop, heating the plastic
disc that is all that forces a mechanical connection.

You must be talking about the really cheap ones. I usually do a little
extra soldering on the ones I've used so it's not just a mechanical
connection anymore.

So progressively worsens, so when heated by the current,
in use, the shaft will turn with finger pressure only
rather than requiring pliers.

Not if you do it right.

Also, If you put a straight jack on say, an old Fender combo, you
better unplug it before you lay it on its back in the mini-van...

PS: It's called a right-angle jack. And if you're running enough
current through it to heat it up, you might want to consider Speak-ons
anyway.

-Dave