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In Reply to: What really is the difference between a 6201 and 12AT7 posted by airtime on September 20, 2004 at 17:15:31:
I'm a little out of the scene now but several months ago found the Telefunken data sheet for ECC801S/6201. I can't compare the sound or specs to any others but put some of the design info here figuring ya'll might be able to fold it in with other info.For Reliability they say: "The factor P indicates how many of 1,000 tubes fail over an operating period of 1,000 hours. The figure is approx. 1.5% for each 1,000 hours."
For Long Life: "we guarantee 10,000 hours operation averaged over 100 tubes"
Tight Tolerances: "In these tubes the tolerances of electrical ratings are reduced in comparison with receiving tubes."
Vibration and shock proof: "The tube withstands acceleration of 2.5 g at 50 c/s for lengthy periods and momentary shocks of 500 g for short periods."
Cathode free from interface: "The cathode establishes no interface even in cases where the heated tube is operated without plate current over lengthy periods."
The tube satisfies the specifications in accordance with Mil-E-1/3D of typ 12AT7W.
Fran
"The truth is out there"
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Follow Ups
- Some 6201 design info - ruffscruff 12:23:27 09/21/04 (0)