Hoffman Amplifiers Tube Amplifier Forum

Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: jeff on June 07, 2012, 07:13:09 am

Title: Silver Jubilee
Post by: jeff on June 07, 2012, 07:13:09 am

 Hi

My brother has heard my amps and he want's me to build him a Silver Jubilee. Any tips/advice on the SJ? I've been looking but can't find a layout, any have one or have a good site where I may find one. Any advice is greatly welcome.

 Thanks
   Jeff

Title: Re: Silver Jubilee
Post by: sluckey on June 07, 2012, 07:54:41 am

Here's a good starting point complete with schematics. No layout though.

http://www.drtube.com/marshall.htm#AN25 (http://www.drtube.com/marshall.htm#AN25)

EDIT... Here's a layout...

http://home.comcast.net/~mamp17/Jubilee%20Layouts.html (http://home.comcast.net/~mamp17/Jubilee%20Layouts.html)

Title: Re: Silver Jubilee
Post by: TIMBO on June 07, 2012, 02:25:37 pm

Hi Jeff, Ceriatone does a couple of versions that look good. Loosechange did a SE one as well.

Title: Re: Silver Jubilee
Post by: jerrydyer on June 07, 2012, 05:16:20 pm

I recommend the ceriatone too. I built a jubillee for a firend and it sonds really good. great layouts too.

Title: Re: Silver Jubilee
Post by: jeff on June 08, 2012, 08:37:30 am

Anyone know what specs I need for the transformers? I got the schematics but no voltages.

Title: Re: Silver Jubilee
Post by: fdesalvo on June 08, 2012, 01:43:11 pm

Quote from: TIMBO on June 07, 2012, 02:25:37 pm

Loosechange did a SE one as well.

THIS

Title: Re: Silver Jubilee
Post by: Willabe on June 08, 2012, 03:45:20 pm

Quote from: fdesalvo on June 08, 2012, 01:43:11 pm

THIS

     :dontknow:

Title: Re: Silver Jubilee
Post by: TIMBO on June 08, 2012, 03:57:41 pm

Hey jeff, This is what i did and the 300-0-300 transformer was one i had, don't know the exact one marshall used. The relay circuit caused me some grief with a buzz but the 51r resistor did the job to reduce it. Good luck

Title: Re: Silver Jubilee
Post by: fdesalvo on June 08, 2012, 04:22:31 pm

Quote from: Willabe on June 08, 2012, 03:45:20 pm

Quote from: fdesalvo on June 08, 2012, 01:43:11 pm

THIS

     :dontknow:

...sorry.  That's a form of positive selectionism or affirmation used by today's internet generation.  


TIMBO - that looks realy cool

Title: Re: Silver Jubilee
Post by: Willabe on June 08, 2012, 04:27:24 pm

Ok, I tried to click on it thinking it was a link.       :laugh:


                         Brad     

Title: Re: Silver Jubilee
Post by: jeff on June 09, 2012, 07:29:00 am

Thanks timbo, cool lookin' amp.