Contents

Contents
USING THE UNIT SAFELY
IMPORTANT NOTES
Introduction
- Main Features
- Before You Use the DB-900
- To Use the DB-900 Like a Conventional Bass Amp
Button Names and Functions
- Front panel
- Rear panel
Connect your DB-900
- Turn the power on and off
The Memory Function
- Calling Up Memory
- Changing the Settings for Memory A and Memory B (Edit)
- Storing the Panel Settings in Memory A and Memory B (Write)
How to handle the Casters
- Attaching and Removing the Casters
Appendices
- Factory-default Settings
- Returning to the Factory-default Settings
- Samle Settings
- Sample 1
- Sample 2
- Block diagram
- Specifications

Roland DB-900 Owner's Manual

Pages 20

Year 2001

Language(s)

of 20

Roland DB-900 Specification

The Roland DB-900 Amplifier is a sophisticated piece of audio equipment designed for professional musicians who demand superior sound quality and versatility. This amplifier boasts a robust power output of 320 watts, ensuring ample volume and clarity for both large venues and studio settings. It features a custom-designed 15-inch speaker coupled with a horn tweeter, delivering a rich tonal palette across a wide frequency range. The DB-900 includes advanced COSM (Composite Object Sound Modeling) technology, which replicates a variety of amplifier tones and effects, providing musicians with a broad selection of soundscapes to explore.

The user interface is intuitive, offering precise control over the sound with a comprehensive EQ section, including bass, middle, treble, and presence controls. It also incorporates a built-in effects processor with reverb, chorus, and delay, allowing for further sound customization without the need for external pedals. Connectivity options are extensive, featuring multiple input channels, XLR and 1/4-inch outputs, and an effects loop, making it adaptable to various performance and recording environments.

The DB-900 is built with durability in mind, housed in a rugged, roadworthy casing that ensures reliability during transport and use. Its design includes a heat-dissipating structure to prevent overheating during prolonged sessions. Weighing in at a manageable level, it combines portability with power, making it an ideal choice for gigging musicians. Additionally, the amplifier is equipped with a versatile footswitch input for hands-free operation. Overall, the Roland DB-900 Amplifier is a high-performance, feature-rich solution for modern musicians looking for a reliable and dynamic amplification system.

Roland DB-900 F.A.Q.

How do I connect the Roland DB-900 Amplifier to an external speaker?

To connect the Roland DB-900 Amplifier to an external speaker, use the speaker output jacks located on the back panel. Ensure the impedance of the external speaker matches the amplifier's specifications. Use a quality speaker cable for the connection, and avoid using instrument cables.

What should I do if the amplifier does not power on?

First, check if the power cable is securely connected and the outlet is functioning. If the problem persists, inspect the fuse located near the power input. Replace it if necessary, ensuring the replacement fuse matches the original specifications.

How can I reduce unwanted noise from my DB-900 amplifier?

To reduce noise, ensure all cables are properly shielded and in good condition. Avoid running audio cables parallel to power cables. Additionally, use the ground lift switch if your amplifier is equipped with one, and check for any interference from other electronic devices.

What is the recommended way to clean the Roland DB-900 Amplifier?

To clean the exterior of the amplifier, use a soft, dry cloth. For tougher grime, slightly dampen the cloth with water. Avoid using any solvents or harsh chemicals. Ensure the amplifier is powered off and unplugged before cleaning.

How do I perform a factory reset on the DB-900?

To perform a factory reset, power on the amplifier while holding down the designated reset button or key combination as specified in the user manual. This process will restore all settings to their factory defaults.

Why does my DB-900 amplifier overheat and how can I prevent it?

Ensure the amplifier is in a well-ventilated area and not blocked by any objects. Overheating can occur if the vents are covered or if the amplifier is used at high volumes for extended periods. Allow the unit to cool down periodically during long sessions.

How can I update the firmware on my Roland DB-900 Amplifier?

Download the latest firmware from the Roland website and transfer it to a USB drive. Insert the USB drive into the USB port on the amplifier and follow the on-screen instructions or refer to the manual for detailed update procedures.

What are the steps to troubleshoot distortion in the output sound?

Check the input signal level to ensure it is not too high, which can cause distortion. Verify that all connections are secure and cables are in good condition. If using effects, adjust their levels to prevent clipping. Adjust the gain and master volume settings appropriately.

Can I use the Roland DB-900 as a bass amplifier?

Yes, the DB-900 is designed to handle a wide range of frequencies, including bass. Ensure that you are using the amplifier’s appropriate settings and speaker configurations to optimize the sound for bass applications.

What maintenance is required to keep the Roland DB-900 in good condition?

Regularly inspect and clean the exterior surfaces. Check all cables and connections for wear and tear. Store the amplifier in a dry, cool place when not in use. Periodically check for firmware updates and apply them as needed.