Fitz

Well I went to go look at those metal bits again to try to identify them... they're both about the same length, width, thickness, and with square ends, So I don't think it's metal shavings from drilling. That's not the real point though, I was also looking over the driver again just to examine its construction and something odd caught my eye, couldn't be sure from squinting, so I grabbed a loupe and looked at it closer. When I twisted the wires on the front a certain way, part of it stuck out a little in the middle... it was the break in the voice coil wire! And it's on the part that's in the front of the driver relatively easy to repair, not on the voice coil itself! It also looks like it got pulled on a bit where it penetrates through the diaphragm to actually go and become the voice coil. So I'm guessing the metal bits had caught on it at some point and pulled it tighter than normal, I go to recable it and happen to flex the little wire/string bundle on the front just the right way... SNAP, that one wire breaks. I still need to perform the repair to make sure there's nothing else wrong, but this would make sense with how things have developed thus far, so I feel good about it.

Don't spoil the surprise!

The screens were still glued in place, so I don't think they were ever removed before now. Regardless, it wouldn't be difficult for something to get into the back of the driver even with the screens on, if one were careless enough. Considering how nasty these are (I still haven't gotten the diaphragm totally clean, there's some stuff on it that resembles spraypaint overspray...), it's certainly within the realm of possibility.

Yeah, the former and voice coil are on the back of the diaphragm, so you can't really see it in any of those pics. Still over the bits of metal being in there, since it doesn't appear to be from the driver itself, but who knows.

Well the saga continues. Miguel had asked me to recable the 2nd K1000 while I already had them disassembled, which I was more than happy to oblige. As part of normal procedure I checked for continuity after soldering one side of the cable and there was, what, nothing? That can't be right, so I checked it right at the solder posts, still nothing. Okay, says I, maybe this is just one of those rare but not unheard of occasions where the voice coil wire connection fails during the process of removing and reattaching the PCB. I remove the blue goop and resolder those wires, and there's still not a bit of continuity. Pushing on the driver to bounce it up and down while I stared at it in thought and frustration, I noticed something odd, very odd. Specifically, it didn't bounce up and down as I pushed on it, instead of made a scratchy noise and resisted movement. Well that's certainly unusual. Looking the driver all over very closely from all angles, when I pushed it outwards some from the back I noticed a small sliver of metal in the gap the voice coil sits in! Looks like I was wrong about the primary cause of the buzzing after all, but the driver still does not move freely and the damage on the voice coil wire still needs to be located. With that, there was only one choice: complete disassembly of the driver. I'd not dared to go this far on a K1000 before as there was never a need to, so it was uncertain how easily it would let me proceed. With all the delicacy and caution I could muster I set to work on it... and it came apart easier than pretty much any driver I've worked on before. With the rest of the bizarre metal debris removed, the diaphragm finally moves freely as it should. I did not notice any readily obvious damage on the voice coil, which is good that it's not totally screwed up, but I still have to continue examining it to track down where the actual break is. Hopefully it isn't on the voice coil proper and instead is somewhere on the two leads that go to the solder posts.

Four years old you say?

Happy birthday bro! Try to go easy on the lady cop.

Did you take her back to your place so she could check out your wood?

41%? Holy carp.

Or just disable the locking mechanism entirely.

This is Brent we're talking about here.

I actually pay more attention to those than the actual pictures.

I'm too scared to even crap my pants.

Snow twice in one winter in Atlanta? It must be a sign of the apocalypse.

Maybe that explains it... all the girls I've dated were actually lesbians.

Cool story brah.

Facepalm you say?

I already have this book. I guess I'll need to pick up those others at some point.

So you're gonna have a wood dac, eh? I thought you only made those for others.

Yeah the best way to figure out an unknown insert size is to just get a variety of bolts that look close enough, and try them until one fits. Just thread them in real gently, don't try to force it if it almost goes in but stops.

I've never even heard of those first two... always used McMaster since they have a warehouse in Atlanta and I can get stuff shipped same/next day for $4 and some change.

I've just promoted myself to Super Legendary Ultra Mecha Technician of the Universe 9000 Mk2. No pay raise for me either. \

I'm listening.

Well saying that is one way to ensure nobody messes with your phones at a meet.