Essentially the Devialet provision is a variance of the classic quick-disconnect male spade/female terminals. On the traditional 6.3mm/.250" terminals contact is made on the outsides of the spade where the female terminal edges are rolled. On Devialet that two-point contact is made on the center of the spade insert top & bottom rather than the outside edges bottom only as with traditional quick-disconnects. Both configurations of that female receiver can conceivably loosen a smidgen over repeated spade insertions/removals. But both can also be refreshed with a slight squeeze from top/bottom of the female clip. Accomplished on the Devialet via inserting the crimp tool (needle nose pliars etc) thru the rear access panel binding post bore. I re-snugged mine upon initial swap. Not that it needed it but seemed a good idea at the time to maximize contact tension and treated the terminal with a very slight film of Caig ProGold on both sides before inserting. And since my WBT terminals are silver and very soft the contact point made a great 2-point contact tell-tale centered in the spade. As an aside the provision is identical for OEM or aftermarket binding posts. Also I "believe" you can see the tell-tale contact grooves in an earlier pic in this thread showing the contact 'wipe marks' directly above a small hole centered in the spade terminal on a test-fitting I did before the terminal was shortened to fit.
Statements in my posts are opinion only, not to be construed as fact. Any projects I engage in are at my own risk! Their outcome cannot be assured and may result in success, small/no change or catastrophic failure. I encourage no one rely on anything I say or do as gospel and to realize your mileage may vary!
