Some things the polarity is reversed. But yes 9 times out of ten the pin is +. I thought this was true at all times until I fried some RC truck components. Better to be safe than sorry. I realize a locking connector is preferred, but couldn't you rig something up if you wanted the 90 that bad?? How about a little velcro strap to hold it in place. Put in the connector (should have some resistance) and strap over a piece of velcro taped or glued to the unit??? They really should have just gone with the old XLR's though. Come on guy's, you built a case out of shevling for the old frying pans...
I've never been able to figure out why anyone would make the ring positive. But yeah, sometimes that's the case. Like the UA5 - it's ring is positive, tip negative. Someone here or the Oade board fried some stuff because of it.
And you're absolutely right - it should be easy enough to use a non-locking connector and rig it securely into place with tape or velcro or some such. My personal experience with tape isn't stellar, though, largely through my own fault. Tape stretches and I'm not always diligent enough about replacing it as it wears. Similar deal with velcro - I've found I have to check/adjust it constantly, and often forget, then...nudge the bag and bang, no power.
It works fine based on Damon's theory probably 85% of the time. To insure it works properly, I just run a piece of transparent tape over hit to hold it in place. I started doing this after noticing power outs on the V3 if the bag was bumped.
Erik - Works 85% of the time
with or
without the tape holding it in place? I hope it works 100% of the time with the tape in place!