In Reply to: Vintage Tubes posted by sony6060 on February 28, 2017 at 07:42:43:
Since most vintage tubes had low vacuum, thin glass envelopes,
asymmetrical internal wiring, parts made out of plain iron sheet, asymmetrical filament structures, filament structures not always physically matching the grid and plate's shapes, inferior metallurgy
with asymmetrical leads going to tube pins (a lot of NOS power tubes connected the plate AT ONE CORNER with a cheap, thin iron lead!!!!!!!!!!!), or worse yet (845, 805 211, etc.)-- Stuck a graphite plate upon a set of steel rods!-- talk about unwanted loose connections and diode-effects! TRASH! Why should anyone be using these things when he
can buy MUCH better today?
WHO designed these NOS tubes? Was it Woolworth's and K-Mart? Walmart? McDonald's Hamburgers?
There are a few exceptions-- Eimacs, etc., of course. I even use an old car-radio tube because it's symmetrical, has very heavy glass envelope, a high vacuum, and is a Loktal, which means it doesn't use soldered-on (anti-transparent and anti-coherent) tin-plated cheap iron pins.
That's a very rare exception, and it's not perfect. The direct-pins
on it are nevertheless iron. Give me a modern tube (from EML, etc.)
that has its wonderful characteristics, and I'll drop it like a Hot
Potato. Anybody want to manufacture a GOOD hi-mu driver? I said HI-MU.
Amp-factor of 90 to 100. Are you listening. EML??????
New Old Stock? Only when I HAVE TO!
-Dennis-
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Follow Ups
- RE: Vintage Tubes - tube wrangler 10:21:25 02/28/17 (30)
- RE: Vintage Tubes - soundchaserkt66 21:29:16 03/16/17 (0)
- And who are you? - gusser 10:34:03 03/01/17 (8)
- RE: And who are you? - Triode_Kingdom 11:32:50 03/04/17 (7)
- RE: And who are you? - PakProtector 04:41:26 03/05/17 (6)
- RE: And who are you? - Triode_Kingdom 08:24:19 03/05/17 (5)
- RE: And who are you? - PakProtector 09:49:03 03/05/17 (4)
- RE: And who are you? - The Bored 07:50:26 03/19/17 (0)
- RE: And who are you? - Triode_Kingdom 10:39:23 03/05/17 (2)
- RE: And who are you? - Stuben 16:04:22 03/16/17 (1)
- RE: And who are you? - PakProtector 07:06:44 03/18/17 (0)
- RE: if 7B4 is the best driver tube for SE DC 2A3 ... - deathtube 667 06:59:47 03/01/17 (19)
- there are limits to friendship... - Jim Dowdy 07:31:04 03/02/17 (0)
- RE: if 7B4 is the best driver tube for SE DC 2A3 ... - tube wrangler 20:25:27 03/01/17 (8)
- RE: thanks DF ... - deathtube 667 07:13:13 03/02/17 (1)
- RE: thanks DF ... - tube wrangler 09:23:45 03/02/17 (0)
- RE: if 7B4 is the best driver tube for SE DC 2A3 ... - drlowmu 22:38:40 03/01/17 (0)
- RE: if 7B4 is the best driver tube for SE DC 2A3 ... - Tre' 20:50:20 03/01/17 (4)
- RE: if 7B4 is the best driver tube for SE DC 2A3 ... - Steve O 21:51:36 03/01/17 (3)
- RE: if 7B4 is the best driver tube for SE DC 2A3 ... - drlowmu 22:59:37 03/01/17 (1)
- RE: if 7B4 is the best driver tube for SE DC 2A3 ... - Steve O 08:29:45 03/02/17 (0)
- RE: if 7B4 is the best driver tube for SE DC 2A3 ... - tube wrangler 22:54:33 03/01/17 (0)
- In what spirit do you ask the question ??.. - drlowmu 09:47:16 03/01/17 (8)
- RE: In what spirit do you ask the question ??.. - deathtube 667 10:28:45 03/01/17 (7)
- RE: In what spirit do you ask the question ??.. - drlowmu 11:42:22 03/01/17 (6)
- RE: In what spirit do you ask the question ??.. - deafbykhorns 12:29:45 03/01/17 (5)
- RE: In what spirit do you ask the question ??.. - drlowmu 12:51:50 03/01/17 (4)
- RE: In what spirit do you ask the question ??.. - deafbykhorns 07:16:44 03/02/17 (0)
- RE: In what spirit do you ask the question ??.. - sideliner 15:57:55 03/01/17 (2)
- RE: In what spirit do you ask the question ??.. - Tre' 17:21:59 03/01/17 (1)
- RE: In what spirit do you ask the question ??.. - tube wrangler 20:48:45 03/01/17 (0)