Installing new Diaphragms

[Audio_by_Goodwill]

You'd want a conductive grease, not dielectric.

I've never heard of using conductive grease. Dielectric is used on electrical connection to keep moisture out, not as an aid to electrical conduction. I don't see any reason to use grease on speaker/diaphragm terminals, becasue moisture shouldn't be an issue.

[bowtie427ss]

I don't see any reason to use grease on speaker/diaphragm terminals, becasue moisture shouldn't be an issue.

I was caught in a time warp, thought we were hangin 291's on 203's at the race track.

I agree that in a home application, properly tight and dry is the way to go.

FWIW, mechanical connections of dissimilar metals can(and do) form non conductive layers of oxides over time when exposed to the elements(even indirectly). This is sometimes why some audio enthusiasts hear vast differences when they install new interconnects. The difference in their case has more to do with scraping clean contact area that had formed surface oxidation. Cleaning connectors should be considered as routine annual(or more often) maintenance, IMO.

That ITT "goo" used to be used for all ground and lightning suppression connections, and some RF connections on communications towers in this area as well as telephone line junctions.

[Audio_by_Goodwill]

FWIW, mechanical connections of dissimilar metals can(and do) form non conductive layers of oxides................That ITT "goo" used to be used for all ground and lightning suppression connections, and some RF connections on communications towers in this area as well as telephone line junctions.

I know the newer wires that got strung in my neighborhood are aluminum, and that in home wiring when using aluminum something called Noalox (I think that's a brand name) is used at junctions for the purpose of preventing the oxides you mention. I never would have guessed it was applicable to communications, but I suppose where there's wire, there could be a need.

[voice of the theater]

Be sure to read all the product precautions on the tube of ITT goo before using it. It is not to be used as a personal lubricant unless you're an android.....

[bowtie427ss]

Be sure to read all the product precautions on the tube of ITT goo before using it. It is not to be used as a personal lubricant unless you're an android.....

No worries, we just hop over the border for a little Pennzoil when the need arises.

[VolvoHeretic]

I was given some of that aluminum stuff wadded in some cellophane wrap to use and it looked like black silicon caulk, but I have no idea what it was. I believe that the dielectric grease prevents not only moisture from contacting the connection, but also the other required ingredient for oxidation; air and the oxygen it contains. And don’t smear half a tube in there.