Ok. I think I’m getting somewhere. It got down to 18 last night so we’re in business. Came out this morning, fired the ol girl up and… NO midbass… None… Neither side. I very gently touched the drivers side (formerly pass side) and it came to life, then cut back out. Touched it again, back to life, then cut out again. I then tried the pass side… nothing. About 10 mins into my drive the crackles started from the drivers side. About 5 mins later I hit a decent bump and the pass side came to life. I greatly suspect a loose connection at the amp for the pass side. After about 25mins or so both sides were working fine.
After getting to work I pulled the drivers side speaker and did some deeper investigating. I happened to notice a wee bit of rust on one of the vent holes on the magnet. So I took my air gun out and very gently blew some air in the vents. That’s when I noticed some moisture laying on the dust cap.
View attachment 358790
View attachment 358791
So I dried it out and repeated until I was confident there was no more moisture in there. So now I’ll wait to see if that makes a difference. My rationale is that the little moisture that was in there was freezing and preventing the coil from moving until it heated up enough that it melted and then freed itself. So now we’ll wait some more and see if that fixed it.
And before anyone asks… yes, I mounted the speaker with the rain guard on top.