Hoffman Amplifiers Tube Amplifier Forum

Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: escopunk on November 20, 2011, 05:40:12 pm

Title: Update on my Violater design
Post by: escopunk on November 20, 2011, 05:40:12 pm

Ok, ive been slow with repair and mods, I have decided to finish with this extremely modified Ampeg VL502, I rack mounted this a while ago and added Mercury trannys plus extra switching. I made the clean channel more like a Fender and channel 2 now has a solo (controlled by the reverb foot switch). Sudo 3 channel amp now, each channel has its own master volume and presence controls, the switchable freq select is now a sweepable mid, I ditched the reverb circuit and added a tube FX loop with a mix pot. The distorted channel is modeled after a Krank Rev1 with all Mallory caps, The clean has all orange drop caps. I have some electro harmonix KT88s and 12AX7EH matched tubes on the way. And of course the bias is independently adjustable and has HV and output tube current meters on the front panel, You can put 6L6/KT66/5881/EL34/6550 or KT88s in this monster and adjust the Bias on the fly. Hope you guys like this, and if you dont :flipa

(http://img.photobucket.com/albums/v685/broper63/ViolaterPG1.jpg)
(http://img.photobucket.com/albums/v685/broper63/ViolaterPG2.jpg)
(http://img.photobucket.com/albums/v685/broper63/ViolaterPG3.jpg)
(http://img.photobucket.com/albums/v685/broper63/ViolaterPG4.jpg)
(http://img.photobucket.com/albums/v685/broper63/chassis.jpg)
(http://img.photobucket.com/albums/v685/broper63/chassis3.jpg)
(http://img.photobucket.com/albums/v685/broper63/chassis2.jpg)

Title: Re: Update on my Violater design
Post by: tubenit on November 20, 2011, 06:14:53 pm

WOW !!!!   Impressive. You put some thought and effort into that one.

Thanks for sharing your work and the schematics.

With respect, Tubenit

Title: Re: Update on my Violater design
Post by: pullshocks on November 20, 2011, 06:32:58 pm

I'm speechless.  Fantastic work, and I love the blacked out look.  I hope the sound is what you are looking for.

Title: Re: Update on my Violater design
Post by: escopunk on November 20, 2011, 07:21:13 pm

This is what it looked like before this round of mods, The sound is very good, hopped up Plexi and clean Fender. I like more bottom end and this anp has it without being flubby, nice and tight. Thanks for the kind complements :icon_biggrin:

(http://img.photobucket.com/albums/v685/broper63/Violator4.jpg)
(http://img.photobucket.com/albums/v685/broper63/DSC02860.jpg)

And the prototype
(http://img.photobucket.com/albums/v685/broper63/0905091940a.jpg)

Title: Re: Update on my Violater design
Post by: tubenit on November 20, 2011, 08:27:03 pm

Really a remarkable job!!  :thumbsup: :thumbsup:

Title: Re: Update on my Violater design
Post by: PRR on November 20, 2011, 09:39:14 pm

.

Title: Re: Update on my Violater design
Post by: escopunk on November 20, 2011, 10:02:14 pm

Thanks, That was an obvious error, Thats what I like about this forum. People who take the time to look at a design with the intention of helping. You rule.

Title: Re: Update on my Violater design
Post by: escopunk on November 20, 2011, 10:09:31 pm

I also removed the cap from the anode to the cathode, this was there for to filter out radio interference. You should see the original schematic I did hand drawn and is full of red and blue scribbles all over it. This schematic should be fairly free from mistakes, but you never know!

Title: Re: Update on my Violater design
Post by: TIMBO on November 23, 2011, 01:29:39 am

Hi escopunk, I love this stuff, but when someone builds an amp this it gets me drooling  :d3:. I don't know much about the original amp so i am assuming it was built with PCBs and you were able to replace/add components where needed.Any gut shots. Great stuff, Thanks

Title: Re: Update on my Violater design
Post by: kagliostro on November 23, 2011, 02:08:27 am

WOW nice stuff

thanks for sharing your ideas & experience

COOL  :bravo1:

Kagliostro

Title: Re: Update on my Violater design
Post by: escopunk on November 30, 2011, 03:17:08 pm

Update
(http://img.photobucket.com/albums/v685/broper63/Absurd%20Amplification%20Labs/Violator/IMAG0227.jpg)
(http://img.photobucket.com/albums/v685/broper63/Absurd%20Amplification%20Labs/Violator/IMAG0226.jpg)
(http://img.photobucket.com/albums/v685/broper63/Absurd%20Amplification%20Labs/Violator/IMAG0222.jpg)
(http://img.photobucket.com/albums/v685/broper63/Absurd%20Amplification%20Labs/Violator/IMAG0219.jpg)
(http://img.photobucket.com/albums/v685/broper63/Absurd%20Amplification%20Labs/Violator/IMAG0216.jpg)
(http://img.photobucket.com/albums/v685/broper63/Absurd%20Amplification%20Labs/Violator/IMAG0209.jpg)
(http://img.photobucket.com/albums/v685/broper63/Absurd%20Amplification%20Labs/Violator/IMAG0208.jpg)
(http://img.photobucket.com/albums/v685/broper63/Absurd%20Amplification%20Labs/Violator/IMAG0207-Copy.jpg)
(http://img.photobucket.com/albums/v685/broper63/Absurd%20Amplification%20Labs/Violator/IMAG0206-Copy.jpg)
(http://img.photobucket.com/albums/v685/broper63/Absurd%20Amplification%20Labs/Violator/IMAG0202-Copy.jpg)