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Source Audio C4 Synth User Manual

Source Audio C4 Synth
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SA249 C4 Synth User Guide 1
C4 Synth User Guide
Welcome
Thank you for purchasing the C4 Synth. This advanced piece of gear offers all the sound construction
tools of a classic Eurorack modular synthesizer and packages them in a compact and easy-to-use
effects pedal for guitar and bass. It is essentially a Eurorack modular synth in a box with
unprecedented tracking abilities, lightning-fast response, and countless sound options. Out of the
box the C4 offers six unique and dynamic synthesizer effects. Connect it to the Neuro Desktop Editor
or Neuro Mobile App and unlock this pedal’s true power. Use the Neuro Editors to create your own
synth sounds with its classic Eurorack inspired editing interface or simply call up an effect from
countless presets created by the Source Audio team or the growing legion of C4 users. Create
incredible tones with the C4’s choice of four parallel voices, three oscillator wave shapes, ten-plus
envelope followers, twenty-plus modulating filters, distortion, tremolo, pitch shifting, intelligent
harmonization, programmable sequencing and more.
The pedal comes in a compact and durable brushed aluminum housing with stereo inputs and
outputs, a three-position toggle switch, a simple four-knob control surface, and full MIDI
functionality via its USB port.
The Quick Start guide will help you with the basics. For more in-depth information about the C4
Synth move on to the following sections, starting with Connections. Enjoy!
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Source Audio C4 Synth Specifications

General IconGeneral
BrandSource Audio
ModelC4 Synth
CategoryMusic Pedal
LanguageEnglish

Summary

Welcome to the C4 Synth User Guide

Overview of C4 Synth Features

Key Features Summary

Highlights major capabilities including presets, tracking, voices, oscillators, filters, LFOs, sequencers, I/O, and bypass modes.

How the C4 Synth Works

Signal Path and Processor Blocks

Explains the signal flow from voices through processors to outputs and lists core processing modules.

Quick Start Guide

Initial Setup: Power, Audio, and Controls

Covers initial power and audio connections, and introduces the main controls and their functions.

Connections: Input Jacks

Input 1 and Input 2 Functionality

Details the primary Input 1 and secondary Input 2, covering audio and data connections.

Connections: Output Jacks

Output 1 and Output 2 Functionality

Details the primary mono Output 1 and secondary Output 2 for audio and data.

Connections: Power and Control Ports

DC 9V, USB, and Control Input Ports

Covers power supply, USB connectivity for editing, and external control port.

Controls: Knob Functions

Primary and Secondary Knob Operations

Explains the dual functions of INPUT/SENS and MIX/VOL knobs and how to access secondary parameters.

Controls: Input Calibration and Assignments

Input Calibration, Knob Assignments, Effect Toggle Switch, and ALT Button

Covers input level calibration, control knob assignments, preset selection, and alternate functions.

Controls: LEDs and Footswitch Operations

Indicator Lights and Footswitch Actions

Describes the Engage/Bypass LED, Alternate Function LED, and footswitch functionality.

Accessing Preset Banks

Green and Red Preset Banks

Details accessing presets via the center toggle switch and ALT button.

Preset Modes

Standard, Preset, and WYSIWYG Modes

Explains the three operational modes affecting knob behavior and preset saving.

Universal Bypass Settings

Bypass Mode Selection

Covers the selection between true bypass and active analog (buffered) bypass modes.

External Control Options

Tap Tempo and Expression Pedals

Details using the tap tempo switch and expression pedals for control.

External Control: Controller Setup

Expression Pedal and Hot Hand Configuration

Explains setting up expression pedals and the Hot Hand 3 Wireless Controller.

Neuro App and Desktop Editor

Desktop Editor Setup and Usage

Instructions for downloading, connecting, and using the Neuro Desktop Editor.

Neuro Desktop Editor Interface

Connections Section Features

Details the Connections section, including Firmware Updates, Hardware Options, and Sound Editor.

Hardware Options: Global Settings

Preset Modes, Bypass, MIDI, and Input Configs

Details global settings for preset modes, bypass type, MIDI channel, and control input.

Preset Editor: Master Controls

Input Gain, Depth, and Modulation Source

Adjusts input levels, master modulation depth, and selects the modulation source.

Voice Controls: Engagement and Source Selection

Voice Engagement and Source Selection

Enables individual voices and selects their sound source type (oscillator, pitch shifter, etc.).

Processor 1 & 2 Distortion

Distortion Module Controls

Enables and configures the distortion effect, including drive, mix, and type.

Processor 1 & 2 Filters

Filter Module Controls

Details filter engagement, types, and modulation parameters like depth, frequency, and Q.

Envelope 1 & 2 Modulation

Envelope Controls and Settings

Covers audio input selection, envelope types, speed, sensitivity, and gate.

LFO 1 & 2 Modulation

LFO Wave Shape and Speed Controls

Details LFO wave shapes, restart triggers, speed, and envelope modulation.

Sequencer 1 & 2 Patterns

Sequencer Configuration and Editing

Details creating and editing sequencer patterns, including steps, semitones, and notes.

Pitch Detector Settings

Source, Range, and Mode Config

Configures input source, note range, and tracking mode for pitch detection.

Intelligent Harmony Module

Key, Mode, and Interval Settings

Sets key, scale, and intervals for intelligent harmonization.

Knob Assignment

Assigning Parameters to Control Knobs

Maps physical control knobs to specific sound parameters for custom control.

Routing & Options

Input Routing Configurations

Configures how audio signals enter the pedal, including auto-detect and external loops.

Presets Management: Device View and File Management

Device Preset View and File Management

Manages presets saved to the pedal, including saving, importing, and exporting.

Cloud Presets: Browsing and Loading

Browsing and Loading Cloud Presets

Guides on accessing and testing user-created presets from the cloud.

MIDI Control via USB or Neuro Hub

MIDI Message Handling

Explains how the C4 responds to MIDI Program Change and Continuous Controller messages.

Updating C4 Synth Firmware

Firmware Update Procedure

Details the process for updating the pedal's firmware using the Neuro Desktop Editor.

Troubleshooting: General Issues and Factory Reset

General Issues and Factory Reset

Covers general troubleshooting, noise issues, and factory reset methods.

Troubleshooting: Common Unit Issues and FAQs

Common Unit Issues and FAQs

Addresses common problems like dead units, power issues, cables, and frequently asked questions.

Warranty Information

Limited Transferrable Warranty Terms

Outlines the warranty period, coverage, transferability, and service information.

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