previous: Benjamin Fargen Re: "swooshing" noise in 77 SF champ -- 5/30/1999 11:21 AM

dissapearing "swooshing" noise in 77 SF champ

5/31/1999 5:10 PM

Colin

dissapearing "swooshing" noise in 77 SF champ Benjamin:     I couldn't find a multican around here (Halifax, Nova Scotia) so I wound up using 3 20uf sprague atoms. But after reading your reply I have been listening each time I power up and guess what.. the noise is gone.     Is this due to not forming the caps? I read posts where it's adivsed to form them and then others say don't bother. All I know right now is the amp seems fine. I wonder what would have happened if the new caps had been brought up slowly on a variac? Have I shortened the life of these filter caps?     btw I'm using a Sovtek 6v6 (Halifax NS again) so I changed the 470 ohm cathode res to a 510 ohm to keep the 6v6 a little cooler and i added a 1K 3watt screen resistor to the power tube. Sounds great now and the Sovtek seems alot happier.     Thanks for the reply     Colin

 

Replies:

BWilliamson I've been told that the Sprague Ato... -- 5/31/1999 5:38 PM