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Posted by RonyWeissman on
07-20-2012
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fiogf49gjkf0d Hi Romy,
Do you have experience with this tube ? I have seen it for first time in german amplifier recently and am curious.
R weissman
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Posted by Romy the Cat on
07-21-2012
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fiogf49gjkf0d Nope, I am not familiar with sound or applications of this tube. It is indirect heated beam tetrode – why would it be any different from the whole family of beam tetrodes? From my perspective it might be interesting for ULF DSET solution as it has a lot of power but I do not think your German people use it for DSET configuration. You know my answer to it: instead of rising power in full-band amplification I tend to advocate raising sensitivity of loudspeakers.
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Posted by N-set on
07-21-2012
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fiogf49gjkf0d 40W max plate power diss. is not impressive and for sure a joke for a serious high-power set.
I remember doing some intellectual excersise/pspice sims of a DC coupled GU81M.
Much more serious tube and IIRC on the sims it looked promising. Search the site and
contact me if you'd like to try the design (i'd need +/- 200yrs to get to it 
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