Audio Asylum Thread Printer
Get a view of an entire thread on one page
|For Sale Ads|
In Reply to: RE: The Bendix 6384 tubes have a character all their own. posted by Triode_Kingdom on April 08, 2017 at 10:23:34
Why aren't all tubs made like this. "To withstand 500G of acceleration" for instance simply and truly amazing!
Because they were developed as a HD replacement for the 6AR6/6098 tubes...used in the guidance systems for our ICBMs. If a rocket is subjected to a tremendous amount of G-force, which it is, and travels WAY up into the atmosphere..it has to be able to take the punishment. There is no room for error in that application...hence the extreme requirements for that tube.
For a less expensive audio alternative, I'd suggest the 6AR6/6098. Just be aware of the lower screen rating compared to the plate. Raytheon made some beautiful 6AR6's. They look just like a TungSol 5881/6L6WGB but obviously are not the same animal!
"Why aren't all tubes made like this?"
Bendix went from zero to hero in a very short amount of time. The "Red Bank" types were intended for the severest kind of military service. Only the "blank check" on the U.S. Treasury made available to the Military by Congress could fund that sort of product.
I guaranty you "ordinary" folks back in the 1950s were not about to pay $10, let alone more, for the 5Y3 "equivalent" 6106. For the time frame, serious money.
Military tubes had to be extra tough. We used tube-powered radar in our combat aircraft in the 1950's and 1960's until the aircraft industry went solid state. SS equipment was much lighter in weight, which on aircraft was extremely important. Don't know if the SS equipment was any more reliable than the tubed equipment, but the Soviets (think MiG's) relied on tubed aircraft radar at least through the end of the 1970's. They claimed that tubes were more reliable than transistors for their purposes.
Probably a good reason for the continued popularity of mil-spec tubes among certain audiophiles.
The inner structure makes a TS 6550 look under-engineered. IIRC, very heavy tubes.
Post a Message!
This post is made possible by the generous support of people like you and our sponsors: