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previous: Bruce /Mission Amps Are you using one of Doug's 6L6 OTs... -- 12/14/2003 12:38 AM

Re: 5E3 6L6 Conversion Layout Drawing

12/14/2003 2:47 AM
bnwitt	Re: 5E3 6L6 Conversion Layout Drawing Bruce, No it's not a hoffman OT. I am using a Blues Deluxe trannie I got from Angela, but I am starting to suspect that it is the cause of the incredible hum I now have in both channels. I replaced the 15k pi load resistors with the stock 56k and got rid of the squeal but the 60 cycle hum in the amp is deafening. I have reversed the PI mod completely now and only have the cathode and coupling cap changes left as the components that are different than the standard circuit. I have never had this kind of hum in a 5E3 before, it's like Mitch Miller's whole group (now you know how old I am) at the PA. I am going to remove each cap change one at a time to see if they are causing the incredible hum but I've got a feeling the larger trannie centered on the same chassis holes is just to close to the PT of this amp to be quiet. As far as Dan is concerned, I know he has been really busy with his day job and also working on his chassis project. I got an email from him last week and all was well.

12/14/2003 2:47 AM

bnwitt

Re: 5E3 6L6 Conversion Layout Drawing

Bruce,
No it's not a hoffman OT. I am using a Blues Deluxe trannie I got from Angela, but I am starting to suspect that it is the cause of the incredible hum I now have in both channels. I replaced the 15k pi load resistors with the stock 56k and got rid of the squeal but the 60 cycle hum in the amp is deafening. I have reversed the PI mod completely now and only have the cathode and coupling cap changes left as the components that are different than the standard circuit. I have never had this kind of hum in a 5E3 before, it's like Mitch Miller's whole group (now you know how old I am) at the PA. I am going to remove each cap change one at a time to see if they are causing the incredible hum but I've got a feeling the larger trannie centered on the same chassis holes is just to close to the PT of this amp to be quiet.

As far as Dan is concerned, I know he has been really busy with his day job and also working on his chassis project. I got an email from him last week and all was well.

Replies:

anonymous I'm here guys! I have been very bus... -- 12/14/2003 4:03 AM