I recently built Jeff Bagby's Continuum speakers, which I am quite fond of. Right after, I went to look for the kit again and saw it was out of stock due to the tweeter, the RS28A-4, being NLA so, apparently I got one of the last complete kits. One of the reasons I do DIY, beyond the quality/value aspect, is serviceability over the long haul. I keep things I like forever which is why I 'usually' choose carefully. It kind of irked me that the tweeter was NLA, and I'm not savvy enough to imagine a replacement and the RS28A is rather well known as being a pretty good tweeter.
During an unrelated search on PE, I found replacement diaphragms for the RS28A so I bought them. A day later I noticed they are now out of stock on those too, so I feel pretty lucky. Lucky twice with this kit so far. That's kind of like an omen of sorts. I've had tweeters go bad on me before due to age. I was not happy about having built a one life speaker. I feel better now.
I almost left them, thinking I should leave them for those really needing a repair. But these days, what ends up happening is, the blasted 'collectors' get ahold of things like this and hold them for ransom. Try to buy an old Stanley chisel or block plane now that they have become 'collectible' and you will find some guy who has cornered the market and will sell it for 20x it's actual value, just because. Ok, this is not that special and I am probably being a bit dramatic over a relatively cheap tweeter but, it doesn't take much to thrill me these days.
