The 6C33 was definitely used in military equipment, but as a voltage regulator. Check out the pics. http://www.goodsoundclub.com/Forums/ShowPost.aspx?PageIndex=1&postID=6140#6140
By “boutique” I meant winders like Electra-Print who don’t have a diversity of commercial offerings, unlike a winder such as Jensen or Edcor.
Ya but at the same time the USA was still using 8 inch floppies for theirs 🙂
https://www.theverge.com/2019/10/25/20931800/usa-nuclear-8-inch-floppy-disk-solid-state-transition
Maybe one of those "Nanostructured Field Emission Cathode" jobs. Put an orange LED in the tube socket and call it good.
I still cant believe McIntosh puts green LEDs there - yuk!
Since this is a DIY forum I would have thought that equipment could be modified for cheaper tubes, of which there are mountains on the used market. For example EL38 for EL34, which is actually a better sounding tube especially in triode but has a top cap. Lots of top cap tubes not being used.
And what about all the old European tubes with B5, B7, side contact and Y8A bases? The EL11 and EL12 were superb, and there were loads of old radio tubes, many very good sounding.
And what about all the old European tubes with B5, B7, side contact and Y8A bases? The EL11 and EL12 were superb, and there were loads of old radio tubes, many very good sounding.
Saw these listed elsewhere ...
6GH8, 6U8, 6BL8, ECF80, ECF82, 6F12P
If ECF80/82 is viable, then they should be cheap as chips, especially the series heater variants.
The new production tube supply situation has just gone from bad to worse. It appears that there will be no more vacuum tubes exported from Russia in 2022. Chinese exports have already become intermittent. Neon gas for the music synthesizer chip factory in Latvia may also be a problem.
https://guitar.com/news/gear-news/e...-russian-tubes-in-2022-due-to-the-export-ban/
https://guitar.com/news/gear-news/e...-russian-tubes-in-2022-due-to-the-export-ban/
If you're talking about anyone using LED illumination under vacuum tubes as a way to dramatically enhance their appearence, I find it cheap and tacky as all hell.
A while back I was at a local Sam's Club doing some shopping, and passing by the displays of TV/audio department, I happened to spot a Samsung DVD surround sound system in use.
The main DVD amp/player had a pair of what looked like 12AX7's sticking out of the top, both were obviously illuminated by LED's from below, I don't remember what color, maybe blue.
I just shook my head and headed for the produce section, and complained to my friend about the sad state of affairs today, and how utterly rediculous things have gotten.
Besides, having a strong distaste for anything Samsung makes, due to plenty of experience with that brand at my repair shop.
Thankfully, I've got a healthy stash of NOS American/German/etc tubes of all types that I brought home from the shop when we closed, to keep my equipment going till I croak.
.....a dozen or so GE/RCA 5U4GB's, A crate of 12AX/AY/AU/AT's, 6Axx's, etc.
So what’s the deal with the neon gas? Something special about the “music synthesizer” chips, or is it going to be an issue for chips in general (adding to the existing problems)?
Neon and other inert gasses are used in the production of most semiconductor chips. Ukraine produces about 50% of the world's supply of neon. Depending on where a given wafer fab is, losing a large supplier can be anything from a minor annoyance, to a complete shutdown.
There are a couple chip factories in Latvia that make "reissues" of some popular music synthesizer chips from the 80's and 90's. These chips are single source parts used in several popular modern analog synthesizers. They also feed the DIY market. The article I read said that this would affect Behringer's synth line, but they have their own chip plant (Cool Audio) and I believe it is in China, but I could be wrong. maybe it's also in Latvia.
Well, if the neon shortage doesn't hamper new chip production then COVID spreading through Shenzhen will certainly pause electronics manufacturing. The Chinese government has shut the city down for a week.
I read that the neon is needed for the lasers used in the lithography. I assume they are He-Ne lasers...
Foxcon in Shenzhen (that makes iPhones) has suspended manufacturing for the moment.
Yep.
And hope you never need to have staff in Hong Kong or China. Been there, done that.