background image

 

4

 

015

 

• Do not force the unit’s power-supply cord to share 

an outlet with an unreasonable number of other 
devices. Be especially careful when using 
extension cords—the total power used by all 
devices you have connected to the extension 
cord’s outlet must never exceed the power rating 
(watts/amperes) for the extension cord. Excessive 
loads can cause the insulation on the cord to  heat 
up and eventually melt through.

..........................................................................................................

 

016

 

• Before using the unit in a foreign country, consult 

with your retailer, the nearest Roland Service 
Center, or an authorized Roland distributor, as 
listed on the “Information” page.

..........................................................................................................

 

Placement

 

351

 

• Using the unit near power amplifiers (or other equipment 

containing large power transformers) may induce hum. 
To alleviate the problem, change the orientation of this 
unit; or move it farther away from the source of inter-
ference.

 

352

 

• This device may interfere with radio and television 

reception. Do not use this device in the vicinity of such 
receivers.

 

354a

 

• Do not expose the unit to direct sunlight, place it near 

devices that radiate heat, leave it inside an enclosed 
vehicle, or otherwise subject it to temperature extremes. 
Excessive heat can deform or discolor the unit.

 

355

 

• To avoid possible breakdown, do not use the unit in a wet 

area, such as an area exposed to rain or other moisture.

 

356

 

• Do not allow rubber, vinyl, or similar materials to remain 

on this unit for long periods of time. Such objects can 
discolor or otherwise harmfully affect the finish.

 

357

 

• Do not put anything that contains water (e.g., flower 

vases) on this unit. Also, avoid the use of insecticides, 
perfumes, alcohol, nail polish, spray cans, etc., near the 
unit. Swiftly wipe away any liquid that spills on the unit 
using a dry, soft cloth.

 

359

 

• Do not paste stickers, decals, or the like to this instrument. 

Peeling such matter off the instrument may damage the 
exterior finish.

• During operation, this device must be placed at a distance 

of no less than 50 cm from any walls.

• Do not allow objects to remain on top of the unit while it is 

in operation.

 

Additional Precautions

 

551

 

• Please be aware that the contents of memory can be 

irretrievably lost as a result of a malfunction, or the 
improper operation of the unit. To protect yourself against 
the risk of loosing important data, we recommend that 
you take notes of the adjustments you have made with the 
setting.

 

552

 

• Unfortunately, it may be impossible to restore the contents 

of data that was stored in the unit’s memory once it has 
been lost. Roland Corporation assumes no liability 
concerning such loss of data.

 

553

 

• Use a reasonable amount of care when using the unit’s 

buttons, sliders, or other controls; and when using its jacks 
and connectors. Rough handling can lead to malfunctions.

 

556

 

• When connecting / disconnecting all cables, grasp the 

connector itself—never pull on the cable. This way you 
will avoid causing shorts, or damage to the cable’s 
internal elements.

 

557

 

• A small amount of heat will radiate from the unit during 

normal operation.

 

558a

 

• To avoid disturbing your neighbors, try to keep the unit’s 

volume at reasonable levels. You may prefer to use 
headphones, so you do not need to be concerned about 
those around you (especially when it is late at night).

 

559a

 

• When you need to transport the unit, package it in the box 

(including padding) that it came in, if possible. Otherwise, 
you will need to use equivalent packaging materials.

 

562

 

• Use a cable from Roland to make the connection. If using 

some other make of connection cable, please note the 
following precautions.

- Some connection cables contain resistors. Do not use 

cables that incorporate resistors for connecting to this 
unit. The use of such cables can cause the sound level 
to be extremely low, or impossible to hear. 
For information on cable specifications, contact the 
manufacturer of the cable.

• This is a heavy device. To prevent injury caused by the 

unit overturning or being dropped, use two or more 
people to carry the unit whenever possible.

Summary of Contents for DB-900

Page 1: ...TRUCTIONS 2 USING THE UNIT SAFELY 3 IMPORTANT NOTES 6 Introduction 7 Main Features 7 Before You Use the DB 900 7 To Use the DB 900 Like a Conventional Bass Amp 7 Button Names and Functions 8 Front pan...

Page 2: ...the third prong are provided for your safety When the provided plug does not fit into your outlet consult an electrician for replacement of the obsolete outlet WARNING IMPORTANT As the colours of the...

Page 3: ...ume level or at a level that is uncomfortable If you experience any hearing loss or ringing in the ears you should immediately stop using the unit and consult an audiologist 011 Do not allow any objec...

Page 4: ...this device must be placed at a distance of no less than 50 cm from any walls Do not allow objects to remain on top of the unit while it is in operation Additional Precautions 551 Please be aware tha...

Page 5: ...n either side of the unit to become blocked Obstructing the vents may result in damage or other problems fig 002 Wrap the AC cord around the cord hook when trans porting or storing the unit fig 003 In...

Page 6: ...ING THE UNIT SAFELY on pages 2 5 please read and observe the following Power Supply 301 Do not use this unit on the same power circuit with any device that will generate line noise such as an electric...

Page 7: ...er which allows you to create a wide variety of different sounds Moreover when combined with the Shape switch even more tonal variations are possible Broad Expandability The input and output connector...

Page 8: ...mplifier Thanks to the modeling function using COSM technology you can make the settings for a variety of amp sounds TYPE Switch This selects three amp types solid state tube and tube drive GAIN Knob...

Page 9: ...phones sound When headphones are connected no sound is output to the unit s speaker Output to the headphones is monaural Before plugging in or unplugging headphones be sure to adjust the MASTER knob t...

Page 10: ...sult in unstable operation When a foot switch is connected to this jack the MANUAL MEMORY A and MEMORY B buttons do not function If you use a mono connection cord to connect a foot switch you ll only...

Page 11: ...rn on power to your various devices in the order specified By turning on devices in the wrong order you risk causing malfunction and or damage to speakers and other devices External Effects DB 900 oth...

Page 12: ...t back to the setting you want NOTE If the MANUAL button or a MEMORY button is pressed at this point or the power is switched off any changes you ve made in the settings will be discarded If you want...

Page 13: ...en accidental movement may be dangerous such as when setting up the DB 900 on stage or when transporting it in a vehicle This is a heavy device To prevent injury caused by the unit overturning or bein...

Page 14: ...b controls the definition fig 8 setting 1 Memory B Slap Bass Typical slap sound used in studios Adjust the COMPRESSION knob to your taste fig 9 setting 2 Returning to the Factory default Settings To r...

Page 15: ...will be lost Sample 1 Hold down the MEMORY A button while you switch on the power fig 009 Then select either the MEMORY A button or the MEMORY B button MEMORY A Rock Bass Standard rock sound By turnin...

Page 16: ...n or the MEMORY B button MEMORY A Chorus Bass Transparent chorus sound suited for slapping or flat picking The amount of modulation can be controlled with the D CHORUS INTENSITY knob fig 12 MEMORY B O...

Page 17: ...17 Appendices Block diagram fig 7 block diagram of jack locations V V V V V BALANCED DI INPUT INSERT SEND RETURN DSP PREAMP POWER AMP LINE OUT...

Page 18: ...PROGRAM MANUAL Button A Button B Button WRITE Button POWER Switch GND LIFT Switch Indicators POWER INJECTION 2 colors D CHORUS POWER Connectors INPUT Jacks HIGH LOW HEADPHONE Jack BALANCED DI Connect...

Page 19: ...communications However there is no guarantee that interference will not occur in a particular installation If this equipment does cause harmful interference to radio or television reception which can...

Page 20: ...opolos Cairo EGYPT TEL 02 4185531 REUNION Maison FO YAM Marcel 25 Rue Jules Hermann Chaudron BP79 97 491 Ste Clotilde Cedex REUNION ISLAND TEL 28 29 16 SOUTH AFRICA That Other Music Shop PTY Ltd 11 Me...

Reviews: