Epiphone Valve Jr.•Mercury Upgrade Kit 25
ThisprojectanditsdocumentationistheresultoftechnicalinvestigationsmadebytheengineeringstaffofMercury Magnetics.Thedisclosureoftheinformationhereinmaypertaintoproprietaryrightsand
thefurnishingofthesedocumentsdoesnotconstituteanexpresedorimpliedlicensetousesuchmaterials.
6
5
4
3
2
1
8
7
270ρF 500V
SILVER MICA
CAPACITOR
22µF 40V
CAPACITOR
NOTE:
ADD
SHIELDING
(INDICATED WITH GREEN)
TO FILAMENTS
(TWISTED PAIR)
POWER
TRANSFORMER
ORANGE SECONDARY
LEADS
(TWISTED PAIR)
OUTPUT
TRANSFORMER’S
PRIMARY
“6V6 MOD” LAYOUT for the MERCURY VALVE JR. UPGRADE
VERSION: 07-25-08
REVISED: 07-29-10
TO RESISTOR R12
(LEFT SIDE TOWARD
TUBE SOCKETS)
TO RESISTOR R15
(LEFT SIDE TOWARD
THE JACK)
470Ω 2W
FLAME-PROOF
RESISTOR
GROUND
TO PIN 7
OF EL84 SOCKET
STAND-OFF*
1.5KΩ 1/2W
CARBON FILM
RESISTOR
Mercury Magnetics
9167 Independence Ave. • Chatsworth, CA 91311
(818) 998-7791 • FAX (818) 998-7835
www.MercuryMagnetics.com
TM
Copyright © 2008–2010 by Mercury Magnetics. All Rights Reserved. Mercury Magnetics, 6V6 Mod and Mercury Upgrade are trademarks licensed to Mercury Magnetics.
Epiphone is a registered trademark of Gibson Guitar Corp. or its subsidiaries. Mercury Magnetics is not affiliated with Gibson Guitar Corp.
6V6
3
2
1
8
7
4
5
H
Nc
K
H
P
G2
G1
*Note that the stand-off can
also be anchored to the left
tube socket nut ‘n bolt.
6
5
4
3
2
1
8
7
TUBE
ALIGNMENT
SLOT