[AMPS] choice

[Rich Measures]

>
>> I have no idea what "Until some company
>> actually builds a completely stable glass tube amp" means?
>
>The Henry amplifiers using 3-500 tubes are quite mature and stable, 

€  To the best of my knowledge, the World Record for grid-fil. shorting 
brand-new 3-500Zs in under one day is currently shared by two 3K-A Henry 
Radio amplifiers.  Both amplifiers reportedly shorted four 3-500Zs - 
accompanied by stentorian big-bangs. .  . I attribute this feat to:
1.   no peak fault current limiting resistance [glitch resistor] in 
series with the high voltage positive lead.  
2.  maximal anode potential =s high vhf voltage gain.  
3.  low ESR filter capacitor
4.  relatively high-Q vhf "suppressors".  
5.  no vhf loading in the cathode to reduce vhf feedback. 
>.....
>It is widely known that the Kenwood TL922 had more than it's share of
>problems 

€  true.   The vhf suppressors in the TL922 appear to be rather similar 
to those in the 3K-A.  

>...
-  cheers Dan. 


Rich...

R. L. Measures, 805-386-3734, AG6K, www.vcnet.com/measures  


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