Moog MAVIS User Manual

44 | Patchbay Module Functions
ATTENUATOR
The Attenuator can reduce the level of any signal connected to the ATTN (+5)
input jack (R6; C3). The attenuated signal is available at the ATTN output jack
(R7; C3).
NOTE: With nothing connected to the ATTN (+5) input jack, the ATTN output jack
can provide an available oset voltage from 0 Volts to +5 Volts, by adjusting the
ATTENUATOR knob.
SAMPLE + HOLD
Sample + Hold is a specialized form of modulation that creates a series of
stepped voltages that can be applied to change the value of a specific parameter.
A Sample + Hold circuit has two inputs: a signal input—S+H (VCO) (R5; C2)—and
a gate input—S+H GATE (LFO) (R6; C2). When the gate input goes high, the
Sample + Hold circuit looks at the voltage at its signal input, grabs the precise
voltage value at that instant, and holds it. This held voltage is available at the S+H
output jack (R7; C2) until the next time the gate input goes high, whereupon a
new voltage value will be sampled from the signal input and held.
By default, Mavis uses the VCO as the sample source. When using the VCO as
the Sample + Hold source, keep in mind that the saw wave will provide a much
broader range of voltages to sample from than the square wave—as the saw
moves linearly between -5 Volts and +5 Volts, while the square jumps between
-5 and +5 Volts. Turning the VCO WAVE knob to saw will therefore have a much
more pronounced eect. An alternative source may be connected to the Sample
+ Hold signal input via the S+H (VCO) input jack (R5; C2).
The LFO is the default gate source connected to the Sample + Hold gate input.
It will sample a new voltage from the Sample + Hold signal source every time the
LFO goes high. An alternative source may be connected to the S+H GATE (LFO)
input jack (R6; C2).

Moog MAVIS Specifications

General

Type	Semi-Modular Analog Synthesizer
Oscillators	1 VCO
Waveforms	Sawtooth, Square, Triangle, Pulse
Envelopes	1 ADSR
LFO	1 LFO
Power	9V DC Power Supply
Connectivity	1/4" Audio Out

Summary

Safety and Initial Setup

Important Safety Instructions

Essential safety precautions for using the Mavis synthesizer.

Setup and Connections

Guide to connecting Mavis to power and audio output.

Powering Up and Playing

Steps to power on the Mavis and begin playing.

Understanding Mavis

About Mavis and Synthesizer Basics

Introduction to Mavis and fundamental analog synthesis concepts.

Meet Mavis: Controls and Examples

Overview of Mavis controls and initial sound exploration exercises.

Applying Modulation

How to use LFO and EG to dynamically alter sound parameters.

Patching Examples

Wave Folding and Sample+Hold

Practical examples of patching for Wave Folding and Sample+Hold.

Mult, Attenuator, and Mixer Patches

Demonstrations of using Mult, Attenuator, and Mixer for signal routing.

Panel Controls & Functions

Voltage Controlled Oscillator (VCO)

Detailed description of VCO parameters and modulation.

Voltage Controlled Filter (VCF)

Explanation of the VCF, its parameters, and modulation.

Low Frequency Oscillator (LFO)

Details on LFO parameters, wave shapes, and modulation.

Envelope Generator (EG)

How EG stages shape sound over time.

Additional Modules and Features

Voltage Controlled Amplifier (VCA)

Explanation of the VCA's role in controlling amplitude and its modes.

Keyboard and Its Parameters

Information on the Mavis keyboard, keys, scaling, and glide.

Utilities and Mixer Functions

Overview of utility modules like Wave Folder, Mixer, and Attenuator.

The Patchbay

Patchbay Overview and Outputs

Explanation of the patchbay layout and audio/CV outputs.

Control Voltage Inputs and Outputs

Details on CV inputs and outputs for controlling Mavis parameters.

Mixer, Mult, and Utility Jacks

Description of mixer, mult, and other utility patch points.

Patchbay Module Functions

Wave Folding and Mixer Functions

In-depth look at Wave Folding and Mixer module operations.

Mult and Attenuator Functions

Explanation of Mult jacks for signal splitting and Attenuator for signal reduction.

Sample + Hold Functionality

How the Sample + Hold circuit generates stepped voltages for modulation.

Using Mavis as a Eurorack Module

Eurorack Module Installation

Instructions for installing Mavis into a Eurorack system.

Calibration and Technical Info

Calibration Procedures

Guide for calibrating Mavis for optimal performance with other gear.

Mavis Signal Flow

Diagram illustrating the internal signal routing of the Mavis synthesizer.

Product Specifications

Technical details and specifications of the Mavis synthesizer.

Service and Support

Product Warranty and Returns

Information on warranty coverage, return procedures, and contact details.

Care and Maintenance

Guidelines for cleaning and maintaining the Mavis synthesizer.