Hoffman Amplifiers Tube Amplifier Forum

Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: navdave on April 21, 2011, 11:19:08 am

Title: Silver Jubilee OD only preamp
Post by: navdave on April 21, 2011, 11:19:08 am

Thinking about cloning this amp in an OD only version is this correct? 

Title: Re: Silver Jubilee OD only preamp
Post by: TIMBO on April 21, 2011, 05:10:55 pm

Hi navdave, There's been a few changes to that schem.I can't be sure that what i have drawn is completely correct, as i see it these are the components are still in the circuit when switched to the OD circuit.So some of these components i have left in the circuit may not be needed(someone else should answer that part)I'v also posted the PSU because i have added a VVR and that is why the i have the Fixed/Cathode switch.The amp is GREAT but i have not been able to have a good blast because of a buzz i am getting from the RELAY (Well i think that is where it is coming from)but what i am getting at the moment is  :thumbsup: Hope this helps.

Title: Re: Silver Jubilee OD only preamp
Post by: navdave on April 21, 2011, 11:33:07 pm

Thanks Tim dont know where I got it but I have a really clean schem and layout someone did.

Title: Re: Silver Jubilee OD only preamp
Post by: TIMBO on April 22, 2011, 12:10:53 am

Here is some info http://home.comcast.net/~mamp17/Jubilee%20Layouts.html