Akashic Guitar effects circuit lookup
1

1590B

Mod Electronics

Seismic / ShiftJFET Boost Pedal

Category
Boost
Difficulty
Beginner
Price
$39.95in stock

From the vendor

JFET Boost Pedal

The Seismic / Shift is a JFET boost based on one of the earliest effects to ever be used on stage. This pedal adds subtle color to a guitar's sound while maintaining the natural tone of the guitar. It packs a serious punch that can cut through any mix when soloing or whenever some extra “umph” is required. The Seismic Shift pairs nicely with amps and other pedals. Place it ahead of tubes, preamps, overdrives, distortions, and fuzz pedals to shift your gear onto a new level.

The Seismic / Shift pedal kit is the introduction to the Nexus Series from Mod Electronics. This series features a PCB base rather than the Mod Electronics’ traditional point-to-point wiring kits to offer builders an even wider variety of effects to build. The Seismic Shift kit is designed for all skill sets and is the perfect first build for those unfamiliar with PCB construction.

The pedal operates on both 9VDC and 18VDC. A center negative power supply is required for use (not included w/ kit). There is no battery connection. When using 9VDC the pedal draws 8mA. When using 18VDC the pedal draws 16mA. The enclosure size is a standard 1590B (4.4" x 2.4" x 1.2").

Schematic

The schematic is in the vendor's build document. Open the build document. No KiCad fragment has been drawn for this circuit yet.

Parts list 18 rows

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RefValueNormalizedTypeNotes
Resistors 6
R1100Ω1001/4W Metal Film Resistor
R2100KΩ100k1/4W Metal Film Resistor
R31MΩ1M1/4W Metal Film Resistor
R422KΩ22k1/4W Metal Film Resistor
R5100KΩ100k1/4W Metal Film Resistor
R_LED1KΩ1k1/4W Metal Film Resistor
Capacitors 6
C1250uF250uElectrolytic Capacitor
C2100nF100nCeramic Capacitor
C3100pF100pCeramic Capacitor
C447nF47nFilm Capacitor
C5100nF100nFilm Capacitor
C650uF50uElectrolytic Capacitor
Diodes 1
D11N58171N5817Schottky Diode
Transistors 1
Q1PF5102PF5102JFET, N-Channel
Potentiometers 1
RV2B500KB500k9mm PCB Mount Potentiometer
Trimmers 1
RV15KΩ5kTrimmer, 3296Y
Switches 1
Footswitch3PDT3PDTBlack Soft Click 3PDT Footswitch
LEDs 1
LEDRedRED5mm Diffused Red LED