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Re: Humm , Mid bass , and Russian 6sn7s and filaments

Posted by Ralph (M) on August 11, 2006 at 09:59:44

In Reply to: Humm , Mid bass , and Russian 6sn7s and filaments posted by Satelliteman on August 11, 2006 at 00:38:03:

We've seen a few EH tubes that were prone to leakage and thus causing hum. The newer tubes are supposed to have this fixed.

We do not use the filament windings on the driver supply transformer anymore. In fact the newer amps use a driver supply transformer that lacks these windings. Instead we obtain the filament supply for the driver from the output section filament torrid. This works much better- try it!

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