I noticed after a while of listening to my Altec Model 19's that one of them did not sound like the other. Specifically, there was a distinct lack of midrange being produced by one woofer. I did some basic troubleshooting, and eventually swapped woofers between cabinets, and the problem followed the woofer.
After that I measured the DCR of all the drivers; both compression drivers measured around 7 ohms, the "good" woofer measured 6.9, and the "bad" one measured 1.6 ohms. I can imagine there is an issue with the VC due to being played very loudly at some point in their day.
At minimum, I want to send this woofer to Great Plains Audio for a recone (the magnets are ferrite, so no remag necessary), but I am wondering if I should just send both and have them both reconed at the same time so they match. Also, do you think anything should be done with the compression drivers right now? I'll eventually tackle a rebuild of the crossovers, but want to get both speakers functioning 100% first.