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Hoffman Amps Forum image Author Topic: My next project amp         &n  (Read 2908 times)

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Offline Geezer

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My next project amp         &n
« on: June 17, 2005, 09:49:41 pm »

  Hoffman Amplifiers
    > Tube Amp Building - Tweaks - Repairs
        > My next project amp      
 
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vinman753
Junior tube assistant
Posts: 79
(1/12/04 10:57 pm)
 My next project amp
--------------------------------------------------------------------------------
 This is going to be my next project. It's Doug's AB763, except I have added a bright switch to each channel,a dwell and tone to the reverb, and the "Ken mod" on the bias adjust.

I hope i signed up with yahoo right. Here is where the schematic is:
f2.pg.photos.yahoo.com/vinman753/

The colors are just to show the changes. Also, i got a 10kl pot from weber with a screw head on it. It mounts just like a standard pot. I'm going to mount it at the rear so the bias can be adjusted externally along with doug's bias tool thingy that you hook up to the multimeter. I will cover it with a rubber cap so there's no accidents. I didn't change that part of the schematic, though. my pic still show's the original 10kl pot.


Edited by: vinman753 at: 1/13/04 7:59 pm
 
embotone
Junior tube assistant
Posts: 5
(1/13/04 3:41 pm)
 yahoo photos
--------------------------------------------------------------------------------
 It is not enough to put your pictures on yahoo, you must enable whichever album you have created for your picture, to be shared. There should be a box you can click on called "share an album" or something like that.
 
vinman753
Junior tube assistant
Posts: 80
(1/13/04 4:36 pm)
 Re: yahoo photos
--------------------------------------------------------------------------------
 thanks, embotone,
sorry about that. hopefully it's shared now.

 
embotone
Junior tube assistant
Posts: 6
(1/13/04 5:46 pm)
 yahoo
--------------------------------------------------------------------------------
 nope
 
vinman753
Junior tube assistant
Posts: 99
(3/5/04 11:11 am)
 Re: yahoo
--------------------------------------------------------------------------------
 I just finished this amp and the mods i did to the reverb give some interesting fine tuning. I added the tone and dwell to the standard two spring fender reverb. I'm keeping my fingers crossed i got this link to share ok.

It also shows a slight modification to add the "Groundhog Ken mod" to the bias adjustment.

f2.pg.photos.yahoo.com/ph.../my_photos

 

Edited by: vinman753 at: 3/5/04 11:31 am
 
 
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