Wiring Schematics - Mercury Epiphone Valve Junior Assembly Manual

B3
R3
100KΩ
R2
V1A
68KΩ
12AX7 12AX7
R1
68KΩ
R8
1MΩ
2.2KΩ
1.5KΩ
D1-4
B1
(to filaments DC)
C12
4700µF
470µF
This project and its documentation are the result of technical investigations made by the engineering staff of Mercury Magnetics.The disclosure of the information herein may pertain to proprietary rights, and the furnishing of these documents does not constitute an expressed or implied license to use
such materials. Copyright © 2006–8 by Mercury Magnetics. All Rights Reserved. Mercury Magnetics,ToneClone, FatStack & Mercury Vintage are trademarks of Mercury Magnetics. Axiom is a registered trademark of Mercury Magnetics. Epiphone is a registered trademark of Gibson Guitar Corp. or its subsidiaries.
Valve Junior Head
(Unmodified stock version • "Version 2 & 3" PCBs)
100KΩ
.022µF
C1 1MΩ R6
R7
VR1
1MΩ
1MΩ
C4
2.2KΩ
22µF
1.5KΩ
B1
R10 R12
220Ω
4.7KΩ 1W
22µF 22µF
R11
C6 C9
220KΩ
Mercury Magnetics is not affiliated with Gibson Guitar Corp.
NOTE: Values in BLACK indicate
B3
Version 2 PCBs, values in
indicate Version 3 PCBs.
R4
C2
.022µF
V1B
1.5KΩ
12AX7
R5
R15
220KΩ
C3
22µF 220Ω 2W
R9
R14
B2 B3
R13
10KΩ
22µF
22µF
C7 C8
RED
B2 B1
16Ω
V2
EL84 EL84
C5
22µF
B3
.1µF
C11
DRAWN BY MERCURY MAGNETICS
08-03-07
REV. 04-09-10
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8Ω
4Ω