Pedalpcb Valhalla Quick start guide

Valhalla Overdrive

Revised 4/9/21

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• Treble

• Mid

• Bass

• Gain

• Volume

• Presence

• Deep

CONTROLS AND FEATURES

Valhalla Overdrive

Parts List (Page 1 of 2)

LOCATION VALUE TYPE NOTES

R1 1M Resistor, 1/4W

R2 1M Resistor, 1/4W

R3 100K Resistor, 1/4W

R4 220K Resistor, 1/4W

R5 10K Resistor, 1/4W

R6 470K Resistor, 1/4W

R7 220K Resistor, 1/4W

R8 680K Resistor, 1/4W

R9 220K Resistor, 1/4W

R10 1M Resistor, 1/4W

R11 10K Resistor, 1/4W

R12 100K Resistor, 1/4W

R13 470K Resistor, 1/4W

R14 220K Resistor, 1/4W

R15 220K Resistor, 1/4W

R16 10K Resistor, 1/4W

R17 39K Resistor, 1/4W

R18 1M5 Resistor, 1/4W

R19 100K Resistor, 1/4W

R20 10K Resistor, 1/4W

R21 4K7 Resistor, 1/4W

R22 1K Resistor, 1/4W

R23 150K Resistor, 1/4W

R24 100K Resistor, 1/4W

R25 100R Resistor, 1/4W

R26 56K Resistor, 1/4W

R27 47R Resistor, 1/4W

R28 100K Resistor, 1/4W

R29 10R Resistor, 1/4W

R30 1K Resistor, 1/4W

R31 10R Resistor, 1/4W

R100 2K2 Resistor, 1/4W

C1 22n Film capacitor, 7.2 x 2.5mm

C2 100p Ceramic capacitor

C3 1u Electrolytic capacitor, 5mm

C4 100p Ceramic capacitor

C5 1u Electrolytic capacitor, 5mm

C6 22n Film capacitor, 7.2 x 2.5mm

C7 2n2 Film capacitor, 7.2 x 2.5mm

C8 47p Ceramic capacitor

C9 2u2 Electrolytic capacitor, 5mm

C10 4n7 Film capacitor, 7.2 x 2.5mm

C11 100p Ceramic capacitor

C12 2u2 Electrolytic capacitor, 5mm

C13 560p Ceramic capacitor

C14 22n Film capacitor, 7.2 x 2.5mm

Continued on next page…

Valhalla Overdrive

Parts List (Page 2 of 2)

LOCATION VALUE TYPE NOTES

C15 22n Film capacitor, 7.2 x 2.5mm

C16 1n Film capacitor, 7.2 x 2.5mm

C17 10u Electrolytic capacitor, 5mm

C18 10u Electrolytic capacitor, 5mm

C19 2n2 Film capacitor, 7.2 x 2.5mm

C20 2u2 Electrolytic capacitor, 5mm

C21 1u Electrolytic capacitor, 5mm

C22 330n Film capacitor, 7.2 x 5.0mm

C23 1u Electrolytic capacitor, 5mm

C24 47u Electrolytic capacitor, 5mm

C25 47u Electrolytic capacitor, 5mm

C26 47u Electrolytic capacitor, 5mm

C100 47u Electrolytic capacitor, 5mm

C101 47u Electrolytic capacitor, 5mm

D1 1N4148 Signal diode, DO-35

D2 1N4148 Signal diode, DO-35

D3 1N5232 Zener diode, 5.6V

D4 1N5232 Zener diode, 5.6V

D5 1N4148 Signal diode, DO-35

D6 1N4148 Signal diode, DO-35

D100 1N5817 Schottky diode, DO-41

IC1 TL072 Dual op-amp, DIP8

IC2 TL072 Dual op-amp, DIP8

IC3 TL072 Dual op-amp, DIP8

IC4 L78L12 Regulator, Positive 12V

IC100 TC1044SCPA Charge Pump IC, DIP8

TREBLE B250K 16mm right-angle PCB mount pot

MID B25K 16mm right-angle PCB mount pot

BASS A1M 16mm right-angle PCB mount pot

GAIN A250K 16mm right-angle PCB mount pot

VOL A10K 16mm right-angle PCB mount pot

PRES C25K 16mm right-angle PCB mount pot

DEEP C25K 16mm right-angle PCB mount pot

Valhalla Overdrive

Schematic Diagram

Valhalla Overdrive

Wiring Diagram

Valhalla Overdrive

Drill Template

1590BB Enclosure

MidTreble Bass

PresenceVolume Deep

Gain

Valhalla Overdrive

Drill Template

1590BB Enclosure

Alternate Version

(No Power Amp Output Jack)

MidTreble Bass

PresenceVolume Deep

Gain

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