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Hoffman Amps Forum image Author Topic: Finished Weber's Smokin Joe I Build  (Read 2909 times)

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Offline RadioComm

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Finished Weber's Smokin Joe I Build
« on: April 07, 2023, 04:04:05 pm »
Hello

This is a follow up to my build preparation post:

https://el34world.com/Forum/index.php?topic=29990.0

Finished my build of Weber's Smokin Joe I. Started with a corporate SS amp with a 6" speaker. De-gutted and kept the chassis and the cabinet. The picture of the original is on the previous post. Got rid of some the labeling with a little finger nail polish. The biggest challenge here was getting the layout to fit a 9-7/16 x 4-7/16 x 2 chassis. Soldering in those tight spaces was tricky too.

My implementation follows Weber's design, with the only exception of a bypass cap selector. Added a 3 way positional switch to either select:

    * No bypass cap
    * a 25 µF bypass cap
    * a .68 µF bypass cap

I'm stunned, it's a great amp. I truly thought it was going to be a one trick pony. The voicing switch adds to its versatility.

Hope everyone has a great week-end.

ttfn


« Last Edit: April 07, 2023, 04:32:22 pm by RadioComm »

Offline RadioComm

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Re: Finished Weber's Smokin Joe I Build
« Reply #1 on: April 07, 2023, 04:05:23 pm »
More pictures...

Offline bmccowan

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Re: Finished Weber's Smokin Joe I Build
« Reply #2 on: April 07, 2023, 04:55:13 pm »
Very cool - I love the way you repurposed that SS chassis and cab.
I built a SJ-1 many years ago. I used a 5E3 chassis because the standard Weber chassis for that amp is small and has the board right above the tube sockets. I used a tube rectifier and 3x16uf filtering. I also added some boost switching like you did.
I liked it, but like big bottles better, so I rebuilt it with a 6L6 and added a Framus mid control. It has a 10" alnico blue frame speaker that Mojo used to sell - Its great.
I think Weber came up with some cool amp ideas back in Ted's days. I still intend to build a SE amp with an 807 tube mostly following their spec, although I suspect it'll sound just like the 6L6 amp. But it'll look mad scientist cool. :laugh:
Enjoy that amp!
Mac
“To my surprise, when I opened my eyes, I was the victim of a great compromise.”
John Prine

Offline Platefire

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Re: Finished Weber's Smokin Joe I Build
« Reply #3 on: April 08, 2023, 09:40:41 am »
I second that! Very neat conversion, well Done :thumbsup:
On the right track now<><

Offline 66Strat

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Re: Finished Weber's Smokin Joe I Build
« Reply #4 on: April 08, 2023, 01:14:56 pm »
Very cool - I love the way you repurposed that SS chassis and cab.
I built a SJ-1 many years ago. I used a 5E3 chassis because the standard Weber chassis for that amp is small and has the board right above the tube sockets. I used a tube rectifier and 3x16uf filtering. I also added some boost switching like you did.
I liked it, but like big bottles better, so I rebuilt it with a 6L6 and added a Framus mid control. It has a 10" alnico blue frame speaker that Mojo used to sell - Its great.
I think Weber came up with some cool amp ideas back in Ted's days. I still intend to build a SE amp with an 807 tube mostly following their spec, although I suspect it'll sound just like the 6L6 amp. But it'll look mad scientist cool. :laugh:
Enjoy that amp!

Use an EF36 on the front end for more Frankenstein mad scientist vibe. Paging Frau Blucher.  :icon_biggrin:

https://www.youtube.com/watch?v=A-JyXC_pmew
« Last Edit: April 08, 2023, 01:17:17 pm by 66Strat »
Regards,
JT

Offline bmccowan

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Re: Finished Weber's Smokin Joe I Build
« Reply #5 on: April 08, 2023, 04:48:57 pm »
Quote
Use an EF36 on the front end for more Frankenstein mad scientist vibe. Paging Frau Blucher.
Ooh, good idea. I think I even have one from a Filmosound, what a fitting tie to Young Frankenstein.
Mac
“To my surprise, when I opened my eyes, I was the victim of a great compromise.”
John Prine

 


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