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In Reply to: How much heat can you tolerate? posted by serus on September 29, 2004 at 16:05:54:
What heat? ;o)Seriously, I like class-a, be it solid-state or hollow-state. Somehow sounds smooooother. Specially cymbals. *shrug*
I don't mind heat. That's what the ac is for.
Then again, friend of mine had atma-sphere otl amps with something like six big ST-shaped bottles (forgot the kind).
That wasn't an amp, that was a furnace. ;o)
Follow Ups:
So now try 60 watts SE.
hichever way you look at it, the least input power to the last stage is around 350 watts. That calls for 3-4 big tubes (like 211 and 845) or one very serious tube, such as a 3-500Z...
By the time you add filament and driver power you'll be facing 500W power input per channel...
Now, what did you say regarding that Atmasphere?! :-)
mullard mz-2-200, the filament alone takes 30 watts to run.But seriously, you could feel the atmas from about six feet away.
Been to ominous-valve.com? he's got a story about wlw (http://www.ominous-valve.com/wlw.html) and its flamethrower rca tube xmitter. 500kw at 700mhz AM. (FCC gave them a waiver during the 30's and wwII.) They used a water fountain outside the building as 'radiator'. The finals were six-foot tall RCA water-cooled triodes in pushspull. Now that's a flamethrower ;o) Interesting article, if you're into mad, teslarian tube gear ;o)
WLW rang in Jan 1 2000 with their first xmitter, a 50kw (what the FCC allows even today) Western-Electric tube rig. Now that's worth kudos. =o) Apparently the RCA 500kw rig still exists, sans pcb-filled trannies.
Thread drift..what a horrible thing.
On a smaller scale it reminds me of a friend that built a ham transmitter with inverted metal tube dipped into water. He could estimate his output power from the rate of evaporation... :-)
Is that cool or what...
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