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Alto 3.4 User Manual

Alto 3.4
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MAXIDRIVE3.4
3 WAY STEREO
DIGITAL CROSSOVER
User's Manual
LTO
R
www.altoproaudio.com
Version 2.4 September 2005
English
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Alto 3.4 Specifications

General IconGeneral
BrandAlto
Model3.4
CategoryCrossover
LanguageEnglish

Summary

Safety Related Symbols and Instructions

Important Safety Instructions

Key safety guidelines and precautions for operating the unit.

Preface

Introduction and Features

Introduction

Overview of the MAXIDRIVE3.4 as a digital crossover and signal processor.

Features

Lists key specifications and capabilities of the MAXIDRIVE3.4.

Control Elements Overview

The Front Panel

Describes the buttons, LEDs, display, and control knob on the front of the unit.

Input Level LEDs and Mute Switches

Explains input level indicators and output mute controls.

Output Level LEDs

Describes the LEDs that indicate output signal levels and limiter status.

The Rear Panel

Details the connectors and switches located on the back of the unit.

AC Inlet and Fuse Holder

Information on power connection and fuse replacement.

Power Switch

Instructions for turning the unit on and off.

Digital In Port

Describes the XLR connector for digital audio input.

RS485 and RS232 Communication Ports

Details serial communication interfaces for remote control and data transfer.

Output and Input Connectors

Describes the XLR connectors for audio outputs and inputs.

Getting Started and System Setup

Configuration of the System

Initial steps for connecting and powering on the MAXIDRIVE3.4.

Loading Factory Presets

Instructions on selecting and loading pre-configured system settings.

Adjusting the Input Signal

How to set input signal levels for optimal performance and to avoid distortion.

Input Gain Adjustment

Steps to adjust input gain levels using the DIAL knob and display.

First Setup

Preparing a custom initial setup by configuring key parameters.

Parameter Settings Overview

Lists parameters like Output Polarity, Crossover Frequencies, Delay, and Gain.

System Configuration

Explanation of how input signals are routed to outputs.

System Configuration Diagram

Visual representation of signal routing for a specific preset configuration.

Preset Management

Information on the different types and numbers of presets available.

Number of Presets

Details the quantity of Factory, User, and Card presets.

Type of Preset

Explains the categories: Factory, User, and Card presets.

Name of the Preset

How the preset name indicates system configuration.

Preset Modifications and Protection

How temporary changes are indicated and how to protect the system settings.

Preset Modifications

Indicates temporary parameter changes not yet saved.

System Protection

How to enable/disable password protection for settings.

Menu Map Configuration Description

Overview of the software menu structure.

Preset Menu

Describes functions related to loading, storing, and dumping presets.

Load PRESET

Steps to select and load presets from memory or card.

Store & Naming PRESET

How to save current system settings as a new preset and name it.

Preset Naming Procedure

Details on assigning a name to a saved preset.

Preset Data Transfer

How to transfer presets between units or computers.

Dump Out PRESET

Procedure to download a preset via serial ports.

Incoming Dump

How to accept or ignore preset data received via serial ports.

Preset Change RX Settings

Configuration for accepting or ignoring preset change commands via serial port.

Delay Menu

Controls for setting time delays for inputs and outputs.

Delay Menu Overview

Explains the purpose and structure of the delay settings.

Input Delay

Adjusting delay for input signals to achieve virtual alignment.

Input Delay Settings

Details on setting input delay in various units (m, mm, ms, us).

Output Delay

Adjusting delay for individual outputs for speaker alignment.

Output Delay Settings

Details on setting output delay in various units (m, mm, ms, us).

Edit Menu

Access to parameters for fine-tuning audio signals.

Input Gain Control

Adjusting the amplification level for input signals.

Input Equalization (Input EQ)

Adjusting the tone of input signals using parametric filters.

Input EQ Parameters

Details on filter types, frequency, bandwidth, and gain for input EQ.

Crossover Settings (Xover)

Configuring low-pass and high-pass filters to divide audio signals.

Xover Filter Types and Slopes

Options for filter types (Butterworth, Bessel, Linkwitz-Riley) and attenuation slopes.

Crossover Frequency and Phase

Setting cutoff frequencies and adjusting signal phase.

Output Equalization (Output EQ)

Adjusting the tone of individual output signals.

Output Gain Control

Adjusting the signal level for each individual output.

Output Polarity

Inverting the phase of individual output signals.

Output Limiter

Setting output level limits to protect components.

Limiter Reaction Times

Choosing between Fast, Normal, and Slow limiter response speeds.

Limiter Threshold

Setting the signal level at which the limiter activates.

Utility Menu Options

Ganging Submenu

Grouping similar inputs/outputs for simultaneous editing.

Input Ganging

Enabling or disabling synchronized editing for input parameters.

Output Ganging

Enabling or disabling synchronized editing for output parameters.

Units Submenu

Selecting measurement units for various functions.

Delay Unit Selection

Choosing units (m, mm, ms, us) for delay settings.

Limiter Threshold Unit Selection

Selecting units (dBu, V) for limiter threshold.

Temperature Unit Selection

Selecting units (°C, °F) for temperature settings.

Misc. Setup Submenu

System options including input selection, meters, and display contrast.

Input Select

Choosing between digital or analog inputs.

Output Meters

Displaying output signals before or after mute.

Temperature Setting

Inputting ambient temperature for automatic delay compensation.

Wake Up Mode

Configuring how mute functions are restored on startup.

LCD Contrast Adjustment

Adjusting the brightness and contrast of the display.

Lock Submenu

Enabling/disabling system protection with a password.

Enable/Disable Protection

Steps to set up total or partial system protection.

Memory Card Submenu

Managing the multimedia memory card.

Format Memory Card

Preparing the memory card for use by the system.

Comm. Setup Submenu

Settings for serial port communication.

Preset Change RX

Accepting or ignoring preset change commands via serial port.

ID Select

Assigning an ID to the unit for communication.

Connections and Applications

Connections

Diagrams and explanations for connecting cables to inputs and outputs.

Input Connections

Wiring schemes for balanced XLR and jack inputs.

Application Examples

Demonstrations of various system configurations using the MAXIDRIVE3.4.

Output Connections

Wiring schemes for balanced XLR outputs and RS232 interface.

RS232 Interface Precautions

Important notes regarding the use of the RS232 serial connection.

Factory Preset Configuration

Table listing factory presets and their corresponding system configurations.

Preset Configuration Table

Details on specific factory presets and their settings.

System Organization Examples

Examples of how to connect the unit for different audio system setups.

2-WAY STEREO + 2 MONO AUX Configuration

Wiring diagram for a specific stereo and mono auxiliary setup.

3-WAY STEREO Configuration

Wiring diagram for a 3-way stereo system configuration.

3-WAY STEREO with MONO SUB+MONO AUX Configuration

Wiring diagram for a 3-way stereo setup with sub and aux.

4-WAY MONO + 2 MONO AUX Configuration

Wiring diagram for a 4-way mono setup with auxiliary outputs.

PC & MAXIDRIVE3.4 Communication Connection

Diagram showing how to connect the unit to a PC for communication.

Technical Specifications

Input/Output and DSP Specifications

Specifics on connectors, impedance, levels, converters, and sampling rates.

Warranty Information

Warranty Terms and Conditions

Conditions, limitations, and duration of the product warranty.

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