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Epiphone Valve Jr. with VOXY mod from Watts Tube …
https://www.youtube.com/watch?v=Osl70qvf_MI
Here's a demo of the VOXY mod for the Epiphone Valve Jr. from Watts Tube Audio. I've also added a bright switch and have a 12ay7 in the preamp, rather than t...
Watts “Stock” layout diagram - Watts Tube Audio
https://tubeamplifierparts.com/wp-content/uploads/2021/02/epiphone_valve_junior_stock.pdf
Epiphone Valve Junior with Watts Tube Audio mods C4 R1 220k / 1w R2 1k / 3w R3 4.7k / 2w R4 10k / 2w R5 240 / 3w R6 1k / 1w R7 220k / 1w R8 10k / 1w R9 100k / 1/2w R10 100k / 1/2w R11 1m / 1w R12 1m / 1w R13 68k / 1w R14 68k / 1w R15 2.2k / 1w R16 2.2k / 1w R17 100 / 1w R18 100 / 1w Resistor Value C1 22uF / 500v C2 22uF / 500v C3 22uF / 500v C4 ...
Watts “Marshallized” layout diagram - Watts Tube Audio
https://tubeamplifierparts.com/wp-content/uploads/2021/02/epiphone_valve_junior_marshallized.pdf
Watts “Marshallized” layout diagram ++++ R4 C5 +++ R7 R11 R13 R14 R15 R16 R6 R17 R18 C7 C8 C9 C10 R1 NOTE: Layout shown utilizes a Watts Tube Audio Valve Junior replacement board, chassis upgrade kit and components kit. Visit www.WattsTubeAudio.com for this and many other great guitar amplifier parts.
Valve Junior Modification - University of Illinois Urbana ...
https://courses.physics.illinois.edu/phys406/sp2017/Student_Projects/Spring10/Robert_Marshall/R_Marshall_P498POM_Final_Report_Sp10.pdf
The Epiphone Valve Junior head features: • 5 Watts RMS Power • Singleended ClassA tube circuit • Two tubes: 12AX7 preamp tube EL84 power tube • Outputs for 4, 8, and 16 ohm speaker loads • One input jack • One volume knob (See next page for premodification schematic)
MOD: Custom Hi Gain 8 watt Tube Amp for Epiphone Valve Jr ...
https://www.mylespaul.com/threads/mod-custom-hi-gain-8-watt-tube-amp-for-epiphone-valve-jr.7453/
There is a popular mod for the Epiphone Valve Junior out there by Mercury Magnetics for $299. WTF? You get a power transformer, a choke, and an output transformer. I have a few problems with the MM kit. First of all, there is no need to change the power transformer, the stock Valve Junior is FINE.
Epiphone Valve Junior Head! 5 Watt Tube Amp Head! | …
https://reverb.com/item/50561257-epiphone-valve-junior-head-5-watt-tube-amp-head-single-ended-class-a-head
4 hours ago · You are looking at a Epiphone Valve Junior Head. This is a 5 Watt All Tube Guitar Amp Head. The secret is long out about the value of these Epiphone Valve Jr amps. It’s a single knob tube amp that is perfect for studio or rehearsal room applications and also can used at smaller gigs where the amp will be run through the mains.
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