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previous: Kurt The Twin Twelve had only one OP. -- 11/29/1998 8:13 AM View Thread

Re: half bad power transformer?

11/30/1998 11:09 PM
Reid Kneeland
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Re: half bad power transformer?
>The interesting thing about this power circuit is that their is a voltage doubler in it, which means that the secondaries are producing a lower voltage than on any of the commonly available instrument amplifier transformers transformers (Fender, Marshall, or Ampeg replacements), so you'll pay real money for it. Try Antique Electronic Supply for a suitable model  
 
Other options are to replace the doubler with a conventional rectifier scheme (this will create a stiffer supply, and change the sound), or find a transformer with double the secondary voltage you want but a 230 V primary (for European or Australian use), and feed it 117.  
 
Reid