Epiphone Valve Jr Mod
Information
- Posts: 49
- Joined: 04 Sep 2007, 13:56
- Contact:
Here is something I found on the Valve Jr that is quite impresive.
I have seen other posts et.. that address the Epi jr. but none like this.
Enjoy
http://gearscore.com/b/forums/thread-vi ... 71&start=1
I have seen other posts et.. that address the Epi jr. but none like this.
Enjoy
http://gearscore.com/b/forums/thread-vi ... 71&start=1
- frank.clarke
- Breadboard Brother
Information
Good documentation, thanks.
Soldering doesn't look great:
http://gearscore.com/res/articles/evj/m ... age054.jpg
Soldering doesn't look great:
http://gearscore.com/res/articles/evj/m ... age054.jpg
- Bernardduur
- Transistor Tuner
What I did to my Jr:
- New PTP PCB; place is all in amps!
- Better quality components
- Relocation of the tubes
- Schematic error's corrected (to make the 1:1.6 ratio rule)
- Added a new output transformer of 15W to raise the wattage a bit (old one is a bottleneck)
- put the tubes back at 6.3V AC!!!! DC on heater poisons the tubes and make em go bad much quicker. Correct placement of tubes does cure the additional hiss which was in these models
The result is a very very nice amp
- New PTP PCB; place is all in amps!
- Better quality components
- Relocation of the tubes
- Schematic error's corrected (to make the 1:1.6 ratio rule)
- Added a new output transformer of 15W to raise the wattage a bit (old one is a bottleneck)
- put the tubes back at 6.3V AC!!!! DC on heater poisons the tubes and make em go bad much quicker. Correct placement of tubes does cure the additional hiss which was in these models
The result is a very very nice amp
'No more....... loud music.......'
Follow my love for pedals and amps on https://bernardduur.blogspot.com and https://www.instagram.com/bernardduur1
Follow my love for pedals and amps on https://bernardduur.blogspot.com and https://www.instagram.com/bernardduur1
DougH wrote:Does that include the shitty soldering?AL wrote:Why go through all the trouble? There's one at the Gear Page right now with mods AND a custom cab... for only.... $1000
AL
I don't know Doug. There are no pics but "it is a very pure signal"
AL