Mod Nexus Series - User Manual

Phase / Off Copyright © 2023 by modelectronics.com
The Phase / O is a four-stage phaser based around the Sound Semiconductor SSI2140 voltage-controlled
multi-mode lter. This pedal oers classic phasing eects along with plenty of control to dial in the perfect
amount of modulation using the Depth, Rate, and Regen knobs. The Stages switch can change the Phase /
O from four-stage phaser to a two-stage phaser providing a wide variety of dierent phasing sounds.
Change the Mode switch from LFO to Manual to use the Phase / O in xed phase mode controlled by the
Depth knob for unique ltering eects.
The Phase / O pedal kit is the second entry in the Nexus Series from Mod
®
Electronics. This series
features a PCB base rather than the Mod
®
Electronics’ traditional point-to-point wiring kits to oer builders
an even wider variety of eects to build. The Phase / O is a great pedal for intermediate skill sets. It
features an all through-hole build with pre-soldered SMT SSI2140.
The pedal operates on 9VDC. A center negative power supply is required for use (not included with kit).
There is no battery connection. The pedal draws ~50mA. The enclosure size is a standard 1590BB (4.7" x
3.7" x 1.34").
PHASE/OFF
PHASE/OFF

Summary

Notes on PCB Construction

Component Lead Spacing

Explains radial and axial component lead types and preparation.

Soldering Best Practices

Details proper soldering techniques for PCB components.

Applying The Product Sticker

Main PCB Construction Steps

Install Resistors R1-R15

Details installing resistors R1 through R15 on the main PCB.

Install Resistors R16-R30

Details installing resistors R16 through R30 on the main PCB.

Install Resistors R31-R35

Details installing resistors R31 through R35 on the main PCB.

Install Diodes D1-D3

Details installing diodes D1, D2, and D3 on the main PCB.

Install IC Sockets and Transistor

Details installing IC sockets (U2-U4) and the 2N2222A transistor (Q1).

Install Capacitors C1-C14

Details installing capacitors C1 through C14 on the main PCB.

Install Capacitors C15-C20

Details installing capacitors C15 through C20 on the main PCB.

Install Switches and Potentiometers

Details installing toggle switches and potentiometers on the main PCB.

Footswitch PCB Assembly

Mount Footswitch Components

Details installing components on the footswitch PCB.

Jack PCB Assembly

Mount Jack Components and Wiring

Details wiring and mounting components on the jack PCB.

Final Pedal Assembly

Connect Footswitch to Main PCB

Connects the footswitch PCB to the main PCB using ribbon cables.

Mount PCBs to Enclosure

Mounts the main and footswitch PCBs into the enclosure.

Attach Jack PCB to Enclosure

Mounts the jack PCB to the enclosure.

Connect Jack PCB to Main PCB

Connects the jack PCB to the main PCB using a ribbon cable.

Insert the Integrated Circuits

Inserts the ICs into their respective sockets on the main PCB.

Attach Control Knobs

Attaches the knobs to the potentiometer shafts.

Phase; Off Control Descriptions

Mod Nexus Series Specifications

General

Brand	Mod
Model	Nexus Series
Category	Music Pedal
Language	English