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Re: Driver Filament phasing

Posted by Satelliteman (A) on September 23, 2006 at 21:44:19

In Reply to: Re: Driver Filament phasing posted by Frank on September 23, 2006 at 18:20:44:

Thanks Frank ! - Sorry for not explaining the noise more - YES , its 50 hz hum . Im using Electro-H 6sn7's . My output stage filament windings ( two sets ) naturally needed to be phased correctly ..I did this on the bench with the DDM , so as to get both banks wired correctly with pins 7 & 8 working together .
However , what wasnt known by me till now , is the relavence of the phasing of the Driver stage toroid winding for pins 7 & 8 for the 6SN7's . Im also aware that the original amps had EI style transformers , and mine are made with all toroids . Thankyou for discussion
Stu

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