Roland DS-90A - User Manual

Thank you for purchasing the Roland Bi-Amp Monitor DS-90A.
Before using this unit, carefully read the sections entitled: “IMPORTANT
SAFETY INSTRUCTIONS” (p. 2), “USING THE UNIT SAFELY” (p. 3), and
“IMPORTANT NOTES” (p. 5). These sections provide important information
concerning the proper operation of the unit. Additionally, in order to feel
assured that you have gained a good grasp of every feature provided by your
new unit, this manual should be read in its entirety. The manual should be
saved and kept on hand as a convenient reference.
Main Features
● In Pursuit of High Sound Quality
The DS-90A powered monitor uses a two-way, bi-amplifier design to
achieve high sound quality.
The monitor features a 160-mm LF Driver and a 25-mm soft-dome HF
Driver as speakers. The amplification includes completely discrete 60-
watt and 30-watt DC structural amplifiers designed to achieve high sound
quality.
● Digital Input
In addition to XLR and TRS phone analog input, the DS-90A is provided with digital input connectors
(coaxial and optical) that support 24-bit digital audio.
Digitally input signals are reproduced faithfully through 24-bit D/A conversion, thus preventing noise
or a drop in sound quality.
You can use the monitors with a wide variety of equipment and applications through selective use of
the analog and digital settings.
● Reproduction of a Variety of Speaker Sounds
(combination with the VS or VM)
By connecting the Roland V-Studio (VS series) or V-Mixer (VM series) to
the DS-90A and using Speaker Modeling Function of VS or VM, the DS-90A
can reproduce the sounds from a wide range of speakers, ranging from the
professional monitors from other manufacturers to the speaker in a small
household television set.
You can use the DS-90A in combination with the V-Studio or V-Mixer to
simulate the sound checks at mixdown, which conventionally have required
switching between multiple pairs of monitors set up to compare the sound.
* Please be aware that not all VS/VM series units are capable of providing
speaker modeling. Before making your purchase, you should confirm that
the unit you are considering does indeed provide the features you desire.
Copyright © 1999 ROLAND CORPORATION
All rights reserved. No part of this publication may be reproduced in any form without
the written permission of ROLAND CORPORATION.
OWNER’S MANUAL
Amplifier
30W
Amplifier
60W

Roland DS-90A Specifications

General

Brand	Roland
Model	DS-90A
Category	Speakers
Language	English

Summary

Main Features

High Sound Quality

Bi-amplifier design with 160-mm LF Driver and 25-mm HF Driver for superior audio.

Digital Input Connectivity

Supports XLR, TRS, coaxial, and optical digital inputs with 24-bit D/A conversion.

Speaker Sound Emulation

Use with VS/VM series for emulating various speaker sounds, aiding mixdown checks.

Important Safety Instructions

General Safety Precautions

Essential precautions for safe operation, including water, placement, and volume.

Grounding Instructions

Details on proper grounding for USA and UK to prevent electric shock.

Using the Unit Safely

Warning and Caution Notices

Explanation of symbols and text used to alert users to risks and precautions.

Safe Operation Guidelines

Rules for safe use, including cord handling, placement, and child supervision.

Important Notes

Power Supply Considerations

Advice on circuit usage, noise prevention, and power-off before connections.

Placement and Environmental Care

Guidance on unit placement, avoiding heat, moisture, and direct sunlight.

Maintenance and Cleaning

Instructions for cleaning the unit using soft cloths and avoiding solvents.

Additional Usage Precautions

Tips on handling controls, cables, transport, and avoiding feedback.

Component Identification

Front Panel Overview

Identification of front panel elements like drivers, ducts, and indicators.

Rear Panel Connections

Overview of rear panel connectors like Analog Input and related diagrams.

Component Details

Digital Input and Controls

Details on digital inputs, input select, trim controls, and power switch.

Connectors and Heat Sink

Identification of AC inlet, heat sink, and other rear panel connectors.

Connection Examples

Placement Precautions

Guidelines for safe placement and transport to avoid damage to the unit.

Connecting and Powering On

Procedures to prevent damage when connecting devices and turning on the unit.

Stereo Sound Setup

Examples for setting up two DS-90A monitors for stereo sound using analog or digital inputs.

V-Studio;V-Mixer Monitoring

Using DS-90A as a reference monitor with Roland V-Studio or V-Mixer systems.

Troubleshooting

No Sound Issues

Steps to diagnose and resolve issues when no sound is produced.

Analog Input Level Too Low

Guidance for low volume issues when using the analog input.

Digital Input Stereo Image Issues

Troubleshooting reversed or unnatural stereo imaging during digital input.

Specifications and Dimensions

Technical Specifications

Detailed technical data including system, drivers, frequency response, and power.

Physical Dimensions

Measurements of the unit in both metric and imperial units.

Reference Information

Frequency Response Chart

Graph showing the frequency response characteristics of the unit.

Regulatory Compliance Statements

Statements regarding compliance with EU, FCC, and Canadian regulations.

Service and Support Information

Worldwide Service Centers

List of Roland Service Centers and authorized distributors by country.