[AMPS] snapping load SB-220 capacitors

[nospam4me@juno.com]

Hello gang, 

My latest Heathkit SB-220 rebuild was quite the animal. The proper 
and complete rebuild of an SB-220 will take some hours of serious 
work. After all the solder flux smoke has cleared, I fired the happy 
animal up for a terminated trial run.  Above the 150 watt power 
level, I got snapping across the loading cap. 

Comparing this capacitor to another 70's vintage SB-220 loading 
cap shows the latter has a larger plate spacing.  Can one of 
you trivia people tell me the reason for the factory change..? 

thanks
skipp

ps:  the http://sonic.ucdavis.edu  server is back on line and mucho 
faster.
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