PedalPCB Lowballer Twin Envelope Filter User manual

Copyright © 2022 - PedalPCB.com Page 1 of 6Lowballer Twin Envelope Filter
Lowballer Twin Envelope Filter
Revised 5/12/22
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• Attack
• Sensitivity
• Decay
• Treble
• Distortion (Toggle switch)
• Bass
CONTROLS AND FEATURES

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Lowballer Twin Envelope Filter
Lowballer
Parts List (Page 1 of 2)
LOCATION VALUE TYPE NOTES
R1 2M2 Resistor, 1/4W
R2 2K7 Resistor, 1/4W
R3 220K Resistor, 1/4W
R4 4K7 Resistor, 1/4W
R5 220K Resistor, 1/4W
R6 2M2 Resistor, 1/4W
R7 100R Resistor, 1/4W
R8 47K Resistor, 1/4W
R9 3K3 Resistor, 1/4W
R10 4K7 Resistor, 1/4W
R11 100K Resistor, 1/4W
R12 470K Resistor, 1/4W
R13 470K Resistor, 1/4W
R14 2K7 Resistor, 1/4W
R15 220K Resistor, 1/4W
R16 47K Resistor, 1/4W
R17 22K Resistor, 1/4W
R18 470K Resistor, 1/4W
R19 470K Resistor, 1/4W
R20 47K Resistor, 1/4W
R21 4K7 Resistor, 1/4W
R22 22K Resistor, 1/4W
R23 2K7 Resistor, 1/4W
R24 27K Resistor, 1/4W
R100 4K7 Resistor, 1/4W
R101 47R Resistor, 1/4W
R102 47K Resistor, 1/4W
R103 47K Resistor, 1/4W
C1 47n Film capacitor, 7.2 x 2.5mm
C2 10u Electrolytic capacitor, 5mm
C3 470n (0.47uF) Tantalum capacitor
C4 4u7 Electrolytic capacitor, 5mm
C5 220n Film capacitor, 7.2 x 5.0mm
C6 47n Film capacitor, 7.2 x 2.5mm
C7 560p Ceramic capacitor
C8 220n Film capacitor, 7.2 x 5.0mm
C9 22n Film capacitor, 7.2 x 2.5mm
C10 22n Film capacitor, 7.2 x 2.5mm
C11 4n7 Film capacitor, 7.2 x 2.5mm
C12 4n7 Film capacitor, 7.2 x 2.5mm
C13 560p Ceramic capacitor
C100 100u Electrolytic capacitor, 5mm
C101 10u Electrolytic capacitor, 5mm
IC1 LM1458 Dual op-amp, DIP8
IC2 JRC4558 Dual op-amp, DIP8
Continued on next page…

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Lowballer Twin Envelope Filter
Lowballer
Parts List (Page 2 of 2)
LOCATION VALUE TYPE NOTES
D1 1N914 Signal diode, DO-35
D2 1N4001 Rectier diode, DO-41
D3 1N4001 Rectier diode, DO-41
D100 1N5817 Schottky diode, DO-41
Q1 2N5088 BJT transistor, NPN TO-92
Q2 2N5088 BJT transistor, NPN TO-92
Q3 2N5088 BJT transistor, NPN TO-92
ATTACK B1K 16mm right-angle PCB mount pot
SENS B10K 16mm right-angle PCB mount pot
DECAY B1M 16mm right-angle PCB mount pot
TREBLE B5K 16mm right-angle PCB mount pot
BASS B5K 16mm right-angle PCB mount pot
DIST SPDT Toggle switch, SPDT 2-position (ON/ON)

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Lowballer Twin Envelope Filter
Lowballer Twin Envelope Filter
Schematic Diagram

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Lowballer Twin Envelope Filter
Lowballer
Wiring Diagram

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Lowballer Twin Envelope Filter
Lowballer
Drill Template
125B Enclosure
Attack
Distortion
Sens Decay
Treble Bass