Roland DB-700 User Manual

OWNER’S MANUAL

Thank you, and congratulations on your choice of the Roland DB-700 bass amplifier.

201b

Before using this unit, carefully read the sections entitled: “IMPORTANT SAFETY
INSTRUCTIONS” (page 2), “USING THE UNIT SAFELY” (page 3), and “IMPORTANT
NOTES” (page 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, OWNER’S
MANUAL should be read in its entirety. The manual should be saved and kept on
hand as a convenient reference.

Contents

IMPORTANT SAFETY INSTRUCTIONS............. 2

USING THE UNIT SAFELY.................................3

IMPORTANT NOTES .......................................... 5

Introduction ........................................................ 6

Main Features..................................................................................... 6

Before You Use the DB-700 .............................................................. 6

Button Names and Functions ........................... 7

Front panel.......................................................................................... 7

Rear panel ........................................................................................... 8

Connect your DB-700....................................... 10

Turn the power on and off ............................................................. 10

The Memory Function......................................11

Calling Up Memory ........................................................................ 11

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.............................. 12

Appendixes....................................................... 13

Block diagram .................................................................................. 13

Factory-default Settings.................................................................. 13

Returning to the Factory-default Settings.................................... 13

Sample Settings................................................................................ 14

Specifications.................................................................................... 16

............... 11

........ 11

202

Copyright © 2000 ROLAND CORPORATION

All rights reserved. No part of this publication may be reproduced in any form
without the written permission of ROLAND CORPORATION.

IMPORTANT SAFETY INSTRUCTIONS

CAUTION

RISK OF ELECTRIC SHOCK

DO NOT OPEN

ATTENTION: RISQUE DE CHOC ELECTRIQUE NE PAS OUVRIR

CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK,

DO NOT REMOVE COVER (OR BACK).

NO USER-SERVICEABLE PARTS INSIDE.

REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.

The lightning flash with arrowhead symbol, within an
equilateral triangle, is intended to alert the user to the
presence of uninsulated “dangerous voltage” within the
product’s enclosure that may be of sufficient magnitude to
constitute a risk of electric shock to persons.

The exclamation point within an equilateral triangle is
intended to alert the user to the presence of important
operating and maintenance (servicing) instructions in the
literature accompanying the product.

INSTRUCTIONS PERTAINING TO A RISK OF FIRE, ELECTRIC SHOCK, OR INJURY TO PERSONS.

IMPORTANT SAFETY INSTRUCTIONS

SAVE THESE INSTRUCTIONS

WARNING - When using electric products, basic precautions should always be followed, including the following:

1.

Read all the instructions before using the product.

2.

Do not use this product near water — for example, near a
bathtub, washbowl, kitchen sink, in a wet basement, or near
a swimming pool, or the like.

3.

This product should be used only with a cart or stand that is
recommended by the manufacturer.

4.

This product, either alone or in combination with an amplifier
and headphones or speakers, may be capable of producing
sound levels that could cause permanent hearing loss. Do
not operate for a long period of time at a high volume level
or at a level that is uncomfortable. If you experience any
hearing loss or ringing in the ears, you should consult an
audiologist.

5.

The product should be located so that its location or position
does not interfere with its proper ventilation.

6.

The product should be located away from heat sources such
as radiators, heat registers, or other products that produce
heat.

7.

The product should be connected to a power supply only of
the type described in the operating instructions or as marked

8.

The power-supply cord of the product should be unplugged
from the outlet when left unused for a long period of time.
Care should be taken so that objects do not fall and liquids

9.
are not spilled into the enclosure through openings.
The product should be serviced by qualified service

10.
personnel when:

The power-supply cord or the plug has been damaged; or

A.

Objects have fallen, or liquid has been spilled into the

B.

product; or
The product has been exposed to rain; or

C.

The product does not appear to operate normally or

D.

exhibits a marked change in performance; or
The product has been dropped, or the enclosure

E.

damaged.

Do not attempt to service the product beyond that described

11.
in the user-maintenance instructions. All other servicing
should be referred to qualified service personnel.

2

For the USA

GROUNDING INSTRUCTIONS

This product must be grounded. If it should malfunction or breakdown, grounding provides a path of least resistance for

electric current to reduce the risk of electric shock.

This product is equipped with a cord having an equipment-grounding conductor and a grounding plug. The plug must be

plugged into an appropriate outlet that is properly installed and grounded in accordance with all local codes and ordinances.

DANGER: Improper connection of the equipment-grounding conductor can result in a risk of electric shock. Check with a
qualified electrician or serviceman if you are in doubt as to whether the product is properly grounded.
Do not modify the plug provided with the product — if it will not fit the outlet, have a proper outlet installed by a qualified
electrician.

For the U.K.

WARNING:
IMPORTANT:

As the colours of the wires in the mains lead of this apparatus may not correspond with the coloured markings identifying

the terminals in your plug, proceed as follows:

The wire which is coloured GREEN-AND-YELLOW must be connected to the terminal in the plug which is marked by the

letter E or by the safety earth symbol or coloured GREEN or GREEN-AND-YELLOW.

The wire which is coloured BLUE must be connected to the terminal which is marked with the letter N or coloured BLACK.
The wire which is coloured BROWN must be connected to the terminal which is marked with the letter L or coloured RED.

The product which is equipped with a THREE WIRE GROUNDING TYPE LINE PLUG must be grounded.

THIS APPARATUS MUST BE EARTHED
THE WIRES IN THIS MAINS LEAD ARE COLOURED IN ACCORDANCE WITH THE FOLLOWING CODE.
GREEN-AND-YELLOW: EARTH, BLUE: NEUTRAL, BROWN: LIVE

USING THE UNIT SAFELY

USING THE UNIT SAFELY

Used for instructions intended to alert
the user to the risk of death or severe
injury should the unit be used
improperly.

Used for instructions intended to alert
the user to the risk of injury or material
damage should the unit be used
improperly.

* Material damage refers to damage or

other adverse effects caused with
respect to the home and all its
furnishings, as well to domestic
animals or pets.

001

• Before using this unit, make sure to read the
instructions below, and the Owner’s Manual.

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

002a

• Do not open or perform any internal modifica­tions on the unit.

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

003

• Do not attempt to repair the unit, or replace parts
within it (except when this manual provides
specific instructions directing you to do so). Refer
all servicing to your retailer, the nearest Roland
Service Center, or an authorized Roland
distributor, as listed on the "Information" page.

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

004

• Never use or store the unit in places that are:

• Subject to temperature extremes (e.g., direct

sunlight in an enclosed vehicle, near a heating
duct, on top of heat-generating equipment); or
are

• Damp (e.g., baths, washrooms, on wet floors);

or are

• Humid; or are

• Exposed to rain; or are

• Dusty; or are

• Subject to high levels of vibration.

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

007

• Make sure you always have the unit placed so it is
level and sure to remain stable. Never place it on
stands that could wobble, or on inclined surfaces.

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

The symbol alerts the user to important instructions
or warnings.The specific meaning of the symbol is
determined by the design contained within the
triangle. In the case of the symbol at left, it is used for
general cautions, warnings, or alerts to danger.

The symbol alerts the user to items that must never
be carried out (are forbidden). The specific thing that
must not be done is indicated by the design contained
within the circle. In the case of the symbol at left, it
means that the unit must never be disassembled.

The ● symbol alerts the user to things that must be
carried out. The specific thing that must be done is
indicated by the design contained within the circle. In
the case of the symbol at left, it means that the power­cord plug must be unplugged from the outlet.

008a

• The unit should be connected to a power supply
only of the type described in the operating instruc­tions, or as marked on the unit.

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

009

• Do not excessively twist or bend the power cord,
nor place heavy objects on it. Doing so can
damage the cord, producing severed elements and
short circuits. Damaged cords are fire and shock
hazards!

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

010

• This unit, either alone or in combination with an
amplifier and headphones or speakers, may be
capable of producing sound levels that could
cause permanent hearing loss. Do not operate for
a long period of time at a high volume 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 objects (e.g., flammable material,
coins, pins); or liquids of any kind (water, soft
drinks, etc.) to penetrate the unit.

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

013

• In households with small children, an adult
should provide supervision until the child is
capable of following all the rules essential for the
safe operation of the unit.

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

3

USING THE UNIT SAFELY

014

• Protect the unit from strong impact.
(Do not drop it!)

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

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.

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

101a

• The unit should be located so that its location or
position does not interfere with its proper venti­lation.

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

102a

• Always grasp only the plug on the power-supply
cord when plugging into, or unplugging from an
outlet.

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

104

• Try to prevent cords and cables from becoming
entangled. Also, all cords and cables should be
placed so they are out of the reach of children.

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

105b

• If the unit could become a hazard if it moves, all
caster wheels should be removed once the unit has
been placed at the place of installation, or has been
loaded onto a vehicle.

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

106

• Never climb on top of, nor place heavy objects on
the unit.

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

107a

• Never handle the power cord or its plug with wet
hands when plugging into, or unplugging from,
an outlet.

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

108a

• Before moving the unit, disconnect the power
plug from the outlet, and pull out all cords from
external devices.

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

109a

• Before cleaning the unit, turn off the power and
unplug the power cord from the outlet.

4

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

110a

• Whenever you suspect the possibility of lightning
in your area, pull the plug on the power cord out
of the outlet.

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

IMPORTANT NOTES

In addition to the items listed under “IMPORTANT SAFETY INSTRUCTIONS” and “USING THE UNIT SAFELY”
on pages 2–4, 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
motor or variable lighting system).

307

• Before connecting this unit to other devices, turn off the
power to all units. This will help prevent malfunctions
and/or damage to speakers or other devices.

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 inter­ference.

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 the piano 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 the piano. 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.

Maintenance

401a

• For everyday cleaning wipe the unit with a soft, dry cloth
or one that has been slightly dampened with water. To
remove stubborn dirt, use a cloth impregnated with a
mild, non-abrasive detergent. Afterwards, be sure to
wipe the unit thoroughly with a soft, dry cloth.

402

• Never use benzine, thinners, alcohol or solvents of any
kind, to avoid the possibility of discoloration and/or
deformation.

(add)

• For routine care of the carpeted area, use a brush with
stiff bristles.

Additional Precautions

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).

559

• 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.

• 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.

• At least two persons are required in order to safely lift the
unit when it is to be moved.

5

Introduction

Main Features

- Thanks to FFP technology, this DSP (Digital Signal

Processing) bass amplifier offers superior performance

regardless of its compact and lightweight body.

- Benefits of FFP Technology

1) FFP technology makes it possible to achieve dynamic,

high-powered sound that surpasses the output spec.

The Power Injection indicator allows you to monitor

the effect.

2) Although the cabinet is compact, the unit is able to

deliver a truly powerful low end, far out of proportion

to its size.

3) You can obtain clear sound with excellent response.

- You can store the settings for controls in memory A or

memory B (Memory feature). It’s also possible to call up

the contents of memory with a foot switch. This means

you can also change amp settings quickly during live

performances.

- The amplifier section employs COSM technology, which

uses modeling to re-create sound characteristics

originating in differences in amplification systems and

circuit design. This makes it possible for you to obtain

everything from high-response, wide-ranging sounds to

overdriven sounds. The Compression feature even

replicates the unique compression characteristics of amps

through modeling.

- The amp is equipped with a three-band equalizer offering

easy operability. Because the midrange-band frequencies

can be changed, you can create a wide range of sounds.

You can also use it in combination with the Shape switch

to obtain a rich variety of sounds.

- This amp features a newly developed D-chorus that has

been specially tuned for bass. Dynamic band-division

processing is performed as appropriate for the input

signal, to produce a great chorus effect that does not

impair the low-frequency response even when you use

"slap" playing techniques or when you play harmonics.

- The input and output connectors include a headphones

jack with optimized tonal correction, a high-performance

XLR-type DI connector, two types of Line Out jacks (an

XLR type and a balanced phone jack), and convenient

Insert jacks for connecting external effects units or other

equipment, thus providing support for a wide variety of

applications.

MEMO

What’s FFP (Feed Forward Processing) Technology?

FFP is innovative technology from Roland that predicts how

to obtain optimal operation for the amplifier, cabinet,

speaker, and respective input signals that make up the bass

amp system. By performing signal processing based on these

predictions, it obtains maximum performance from each of

these components.

MEMO

What’s COSM (Composite Object Sound Modeling)

Technology?

Technology that uses different means to create a virtual

reconstruction of physical structures, materials, and so on

that actually exist is called modeling technology. COSM is

proprietary technology from Roland that combines several

kinds of sound-modeling technology to create even newer

sounds.

Before You Use the DB-700

When you want to use the amplifier like a conventional

analog amp or want to play sounds using the present control

settings, such as when you’ve adjusted the controls to new

settings, press the MANUAL button to make the indicator

light up.

The factory-default control settings are stored in memory A

and memory B (p. 13). When you switch on the power for the

first time after purchase, the sounds play according to the

settings in memory A, regardless of the present control

settings.

NOTE

After that, starting with the next time you turn on the

power, sounds are played with the settings in effect

when the power was last switched off. For instance, if

you turn off the power while the settings in memory A

are in effect, sounds are played using the settings in

memory A the next time you turn on the power.

6

Button Names and Functions

Front panel

fig. 1 (control panel)

Controls that can be stored in memory

234567

1

1. Control Buttons

You can store the settings of the controls in memory A or

memory B. For more information, take a look at “The

Memory Function” (p. 11).

MANUAL Button

To play sounds in a way that faithfully reflects the control

settings, press this button to make the indicator light up (the

Manual function).

You can use a foot switch to switch the Manual

function on and off.

MEMORY A and MEMORY B Buttons

These buttons are used to call up control settings from

memory A or memory B, and to store such control settings in

memory A or memory B. To call up control settings, press the

corresponding button to make the indicator light up.

You can use a foot switch to switch between

memory A and memory B.

WRITE Button

Press this to store the control settings in memory.

GAIN Knob

This adjusts the input gain. You can make the settings for a

wide range of sounds, from clean to overdrive.

VOLUME Knob

These adjust the volume level. When toggling between

memory A and memory B as you use the amp, the VOLUME

knob is handy for adjusting the volume level between the

two.

COMPRESSION Knob

This adjusts the compression effect.

4. Shape

SHAPE Switch

Turning this switch on allows you to add the particular

sound characteristics to each type of amp selectable with

COSM amp modeling.

5. Equalizer

The DB-700 comes with a three-band equalizer. You can

change midrange frequencies, so it’s possible to create a wide

variety of sounds.

2. Input Jacks

HIGH Jack
LOW Jack

Connect the bass guitar to the corresponding jack according

to the bass guitar’s output level.

3. Amplifier

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.

BASS Knob

This adjusts the tone of the bass range.

MIDDLE LEVEL Knob

This adjusts the tone of the middle range.

MIDDLE FREQUENCY Knob

This adjusts the frequency of the middle range.

TREBLE Knob

This adjusts the tone of the treble range.

7

Button Names and Functions

6. D-Chorus

Thanks to dynamic band-splitting processing according to

input signals, you can perform with a chorus effect with no

loss in bass-range response.

INTENSITY Knob

This adjusts the amount of chorus that’s applied. When you

don’t want to use a chorus effect, set this to “Off” (the

indicator goes dark). If you want to obtain a longer pre-delay

effect, set this to a value of 7 or more.

You can use a foot switch to toggle the chorus

effect on and off. Note that this is not possible

when the INTENSITY knob is off.

7. Master

Power Injection Indicator

This indicator shows the power-boosting effect of DSP. The

color of the indicator changes from green to orange

according to the effect.

MASTER Knob

This adjusts the volume level of the unit’s speaker or the

headphones.

(Only when using speaker )

NOTE

The setting of the MASTER knob is not stored in

memory A or memory B.

PHONES Jack

This is for connecting headphones. Tonal correction is

performed in order to produce the optimal headphones

sound.

NOTE

NOTE

NOTE

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 to 0.

POWER Switch

This switches the power on and off. The pilot light

illuminates when the power is on.

NOTE

Before turning the power on or off, be sure to put the

MASTER knob at 0.

Rear panel

fig. 2 (rear panel)

11

8. Balanced DI

Balanced DI Connector

This is an XLR-type, superior sound quality, balanced DI

connector for output of the direct sound of the bass guitar.

GND LIFT Switch

This selects whether the balanced DI connector and the XLR-

type Line Out jack are grounded or not. If hum occurs, try

changing a switch position

9. Insert

These jacks are for connecting external effecters and the like.

10

9

8

SEND Jack

This is the output jack that connects to the input on the

external effects unit.

RETURN Jack

This jack is for input of the returned sound from the external

effects unit.

10. Line Out

These output preamp sound with D-chorus. There are two
types of connectors: an XLR type and a balanced TRS 1/4”
phone jack. Use the appropriate one for the equipment
you’re connecting.

8

Button Names and Functions

CHORUS

Polarity

switch

11. Foot Switch

By connecting a foot switch such as the FS-5L (sold

separately), you can control a variety of such as with your

feet.

TIP:A/B and RING:MANUAL Jack

You can use a foot switch to switch between memory A and

memory B or switch the Manual function on and off.

fig. 3 (explanatory figure)

Switch between Memory A
and MemoryB

TIP :

A/B

MANUALRING:

TIP: Switches between memory A and memory B.

RING: This switches the Manual function on and off. When

switched off, the settings of the memory just selected

are used.

WHITE

RED

Manual function ON/OFF

Polarity

switch

CHORUS jack

This lets you switch the chorus effect on and off.

(When using the FS-5L)

Set the polarity switch as shown in the diagram

below. With this setting, the indicator of the FS-

5L will light when the Chorus effect is on.

fig. 4 (explanatory figure)

NOTE

NOTE

When the D-chorus INTENSITY knob setting is made

or stored while at “OFF,” the foot switch cannot be

used to switch chorus on or off.

If the D-chorus INTENSITY knob has been used to

turn on the Chorus effect, using the foot switch to turn

off the Chorus effect will cause the D-CHORUS

indicator to blink.

NOTE

NOTE

NOTE

(When using the FS-5L)

When using the FS-5L to switch the Manual

function on and off, set the polarity switch as

shown in the diagram above. With this setting,

the indicator of the FS-5L will light when the

Manual function is on.

When using a stereo connection cord, be sure to use two

foot switches. Use with one plug empty may result in

unstable operation.

When a foot switch is connected to this jack, the

MANUAL, MEMORY A, and MEMORY B buttons

do not function.

When using the amp with a single foot switch, use a

monaural cord to connect the foot switch. In this case,

this switches between memory A and memory B. Also

MANUAL button does not function.

9

Connect your DB-700

Refer to the following diagram and connect the DB-700 to the external eqipment you are using.

fig. 5 (connection with an external instrument)

or

Foot switches

* To prevent malfunction and/or damage to speakers or other

devices, always turn down the volume, and turn off the power

on all devices before making any connections.

* The pin assignment for the XLR type connectors is as shown

below. Before making any connections, make sure that this pin

assignment is compatible with that of all your other devices.

fig.6 (XLR jack polarity diagram)

1 : GND (earth)

1

2

2 : HOT
3 : COLD

3

OUTPUT

Power amplifier

INPUT

Effecter

Mixer

Turn the power on and off

Once the connections have been completed, turn 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.

- Effecter -> DB-700 -> others output eqipment

* The heat-dissipation fins on the back of the unit become hot

while the equipment is in operation. Do not touch them!

* This unit is equipped with a protection circuit. A brief interval

(a few seconds) after power up is required before the unit will
operate normally.

* Always make sure to have the volume level turned down before

switching on/off power. Even with the volume all the way down,
you may still hear some sound when the power is switched on/
off, but this is normal, and does not indicate a malfunction.

* Although activation of the heat-protection circuitry, which

occurs when the amp is used in overly hot weather or other such
conditions, may result in interruptions of the sound, this does
not indicate a malfunction.

10

The Memory Function

Calling Up Memory

1. Press the MEMORY A or MEMORY B button to

choose the memory you want.

For more on the factory-default settings for memory A

and memory B, see “Factory-default Settings” (p. 13).

NOTE

Changing the Settings for Memory A and Memory B (Edit)

1. Press the MEMORY A or MEMORY B button to

NOTE

2. Operate the controls.

When you change the control settings, the indicator for the
MEMORY A or MEMORY B button flashes.

You can also choose a memory using the foot switch.

When doing so, however, be aware that the MEMORY

A and MEMORY B buttons do not function.

choose the memory whose settings you want to change.

You can also choose a memory using the foot switch.

When doing so, however, be aware that the MEMORY

A and MEMORY B buttons do not function.

Storing the Panel Settings in Memory A and Memory B (Write)

You can store the settings for all controls except the MASTER
knob in memory A or memory B.

1. When you’re done making the settings with the controls,

press the WRITE button.

2. Press the MEMORY A or MEMORY B button to

choose memory A or memory B.

You can also choose a memory using the foot

switch.

NOTE

3. Press the WRITE button to write (store) the settings to

To cancel the Write operation at this time, press the

MANUAL button, so that return Manual settings.

memory. The indicator flashes while writing is in

progress, and remains steadily lit when it ends.

If it is necessary to adjust the volume-level balance

between memory A and memory B, adjust the

VOLUME knob on the amplifier, and then store

the settings.

NOTE

NOTE

When operating the controls, note that editing mode is

actually entered after you’ve hit the same setting as the

one in memory. This means it’s a good idea to give the

control knob a big turn through all the possible

settings, then bring it back to the setting you want.

If you switch off the power, or press the MANUAL,

MEMORY A, or MEMORY B buttons before you’ve

saved the settings using the Write procedure, all

settings changes will be lost. Be sure to carry out a

Write operation for any important settings you don’t

want to lose.

11

How to handle the Casters

Attaching and Removing the Casters

You can attach or remove casters as shown in the following figure.

Be sure to remove all casters when accidental movement may be dangerous such as when setting up the DB-700 on stage or

when transporting it in a vehicle.

If casters have been attached to the amp, make sure it is used only on a stable, level surface.

• Attaching all of the casters can make it easier to move the amplifier.

(Usage Examples)

• You can use the DB-700 as a floor monitor by removing the two wheels on the rear-panel side and setting the amplifier at an

angle. (Be sure it remains stable when you do so.)

12

Appendixes

Block diagram

fig. 7 (block diagram of jack locations)

INPUT

V

BALANCED DI

SEND

V

INSERT

V

RETURN

DSP

V

LINE OUT

V

Factory-default Settings

Memory A: Slap Bass

Typical slap sound used in studios. Adjust the COMPRESSION knob to your taste.

fig. 8 (setting 1)

AMP

(ON)

Memory B: Rock Drive

Heavy rock sound. The amount of distortion can be adjusted with the GAIN knob.

fig. 9 (setting 2)

(ON)

Returning to the Factory-default Settings

To return the settings in memory A and B to their factory defaults, while holding down the MANUAL button, turn on the
POWER switch.

13

Appendixes

Samle Settings

In addition to the default settings, the following sample settings (which are geared toward specific styles of playing) are also

provided.

NOTE

Once you call up the following sample settings, any settings you’ve stored at Memory A and B will be lost.

Sample 1

Hold down the MEMORY A button while you switch on the power. Then, select either the MEMORY A button or the
MEMORY B button.

MEMORY A: Rock Bass

Standard rock sound. The amount of tube-compression can be adjusted with the GAIN knob.

fig.10

(ON)

MEMORY B: Solo Fretless

Warm sound suited for fretless bass. Adjust the D-CHORUS INTENSITY knob to enhance the harmonics.

fig.11

14

(ON)

Appendixes

Sample 2

Hold down the MEMORY B button while you switch on the power. Then, select either the MEMORY A button or the
MEMORY B button.

MEMORY A: Chorus Bass

Transparent chorus sound suited for slapping or flat-picking. The modulation amount can be controlled with the D-CHORUS
INTENSITY knob.

fig.12

(ON)

MEMORY B: Overdrive Bass

Wildly over-driven sound of the seventies. Great for flat-picking. The edge of the picking can be adjusted with the TREBLE knob.

fig.13

(OFF)

15

Appendixes

Specifications

Rated Power Output

250 W / 8 ohms

Nominal Input Level (@1KHz)

INPUT HIGH -30 dBm/1 M ohms

INPUT LOW -20 dBm/300 k ohms

(AMP TYPE: SOLID STATE)

INSERT RETURN +4 dBm

Nominal Output Level

BALANCED DI +4 dBm

INSERT SEND +4 dBm

LINE OUT (XLR type) +4 dBm

LINE OUT (PHONE type) +4 dBm

*0 dBm=0.775 Vrms

Speakers

38 cm (15 inches) X 1

Horn Tweeter X 1

Memory

A, B (2 memories)

Controls

AMPLIFIER

- TYPE Switch (3 types)

- GAIN Knob

- VOLUME Knob

- COMPRESSION Knob

SHAPE Switch

EQUALIZER

- BASS Knob

- MIDDLE LEVEL Knob

- MIDDLE FREQUENCY Knob

- TREBLE Knob

D-CHORUS

- INTENSITY Knob (with switch)

MASTER Knob

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 Connector

INSERT Jacks (SEND, RETURN)

LINE OUT Jacks

FOOT SWITCH Jacks (TIP: A/B RING: MANUAL, CHORUS)

(XLR type balanced, 1/4" TRS Phone type balanced)

Power Supply

AC 117 V, 230 V or 240 V

Power Consumption

290 W (117 V, 230 V, 240 V)

Dimensions

578(W) x 407 (D) x 598 (H) mm

22 - 13/16 (W) x 16 - 1/16 (D) x 23 - 9/16 (H) inches

(Include casters)

Weights

34.0 kg / 75 lbs

Accessories

Owner’s Manual

Casters (x4)

Options

Foot Switch FS-5L (BOSS)

* In the interest of product improvement, the specifications and/or

appearance of this unit are subject to change without prior

notice.

16

Appendixes

17

Information

When you need repair service, call your nearest Roland Service Center or authorized Roland distributor in your country as
shown below.

AFRICA

AFRICA

EGYPT

Al Fanny Trading Office

P.O. Box 2904,
El Horrieh Heliopolos, Cairo,
EGYPT
TEL: [phone]

REUNION

Maison FO - YAM Marcel

25 Rue Jules MermanZL
Chaudron - BP79 97491
Ste Clotilde REUNION
TEL: 28 29 16

SOUTH AFRICA

That Other Music Shop
(PTY) Ltd.

11 Melle Street (Cnr Melle and
Juta Street)
Braamfontein 2001
Republic of SOUTH AFRICA
TEL: [phone]

Paul Bothner (PTY) Ltd.

17 Werdmuller Centre Claremont
7700
Republic of SOUTH AFRICA

P.O. Box 23032
Claremont, Cape Town
SOUTH AFRICA, 7735
TEL: [phone]

ASIA

CHINA

Beijing Xinghai Musical
Instruments Co., Ltd.

6 Huangmuchang Chao Yang
District, Beijing, CHINA
TEL: [phone]

HONG KONG

Tom Lee Music Co., Ltd.
Service Division

22-32 Pun Shan Street, Tsuen
Wan, New Territories,
HONG KONG
TEL: [phone]

INDIA

Rivera Digitec (India) Pvt. Ltd.

409, Nirman Kendra Mahalaxmi
Flats Compound Off. Dr. Edwin
Moses Road, Mumbai-400011,
INDIA
TEL: [phone]

INDONESIA

PT Citra Inti Rama

J1. Cideng Timur No. 15J-150
Jakarta Pusat
INDONESIA
TEL: [phone]

KOREA

Cosmos Corporation
Service Station

261 2nd Floor Nak-Won Arcade
Jong-Ro ku, Seoul, KOREA
TEL: [phone]

MALAYSIA

Bentley Music SDN BHD

140 & 142, Jalan Bukit Bintang
55100 Kuala Lumpur,MALAYSIA
TEL: [phone]

PHILIPPINES

G.A. Yupangco & Co. Inc.

339 Gil J. Puyat Avenue
Makati, Metro Manila 1200,
PHILIPPINES
TEL: [phone]

SINGAPORE

Swee Lee Company

150 Sims Drive,
SINGAPORE 387381
TEL: [phone]

CRISTOFORI MUSIC PTE
LTD

Blk 3014, Bedok Industrial Park E,
#02-2148, SINGAPORE 489980
TEL: [phone]

TAIWAN

ROLAND TAIWAN
ENTERPRISE CO., LTD.

Room 5, 9fl. No. 112 Chung Shan
N.Road Sec.2, Taipei, TAIWAN,
R.O.C.
TEL: [phone]

THAILAND

Theera Music Co. , Ltd.

330 Verng NakornKasem, Soi 2,
Bangkok 10100, THAILAND
TEL: [phone]

VIETNAM

Saigon Music

138 Tran Quang Khai St.,
District 1
Ho Chi Minh City
VIETNAM
TEL: [phone]

AUSTRALIA/
NEW ZEALAND

AUSTRALIA

Roland Corporation
Australia Pty., Ltd.

38 Campbell Avenue
Dee Why West. NSW 2099
AUSTRALIA
TEL: [phone]

NEW ZEALAND

Roland Corporation (NZ) Ltd.

97 Mt. Eden Road, Mt. Eden,
Auckland 3, NEW ZEALAND
TEL: [phone]

CENTRAL/LATIN
AMERICA

ARGENTINA

Instrumentos Musicales S.A.

Florida 656 2nd Floor
Office Number 206A
Buenos Aires
ARGENTINA, CP1005
TEL: [phone]

BRAZIL

Roland Brasil Ltda.

R. Coronel Octaviano da Silveira
203 05522-010
Sao Paulo BRAZIL
TEL: [phone]

CHILE

Comercial Fancy S.A.

Avenida Rancagua #0330
Providencia Santiago, CHILE
TEL: [phone]

EL SALVADOR

OMNI MUSIC

75 Avenida Notre y Alameda
Juan Pablo 2 No. 4010
San Salvador, EL SALVADOR
TEL: [phone]

MEXICO

Casa Veerkamp, s.a. de c.v.

Av. Toluca No. 323 Col. Olivar de
los Padres 01780 Mexico D.F.
MEXICO
TEL: [phone]

La Casa Wagner de
Guadalajara s.a. de c.v.

Av. Corona No. 202 S.J.
Guadalajara, Jalisco Mexico
C.P.44100 MEXICO
TEL: [phone]

PANAMA

Productos Superiores, S.A.

Apartado 655 - Panama 1
REP. DE PANAMA
TEL: [phone]

URUGUAY

Todo Musica

Cuareim 1488, Montevideo,
URUGUAY
TEL: [phone]

VENEZUELA

Musicland Digital C.A.

Av. Francisco de Miranda,
Centro Parque de Cristal, Nivel
C2 Local 20 Caracas
VENEZUELA
TEL: [phone]

EUROPE

AUSTRIA

Roland Austria GES.M.B.H.

Siemensstrasse 4, P.O. Box 74,
A-6063 RUM, AUSTRIA
TEL: [phone]

BELGIUM/HOLLAND/
LUXEMBOURG

Roland Benelux N. V.

Houtstraat 3 B-2260 Oevel
(Westerlo) BELGIUM
TEL: [phone]

DENMARK

Roland Scandinavia A/S

Nordhavnsvej 7, Postbox 880
DK-2100 Copenhagen
DENMARK
TEL: [phone]

FRANCE

Roland France SA

4, Rue Paul Henri SPAAK
Parc de l'Esplanade F 77 462 St.
Thibault Lagny Cedex FRANCE
TEL: [phone]

FINLAND

Roland Scandinavia As,
Filial Finland

Lauttasaarentie 54 B
Fin-00201 Helsinki, FINLAND
TEL: [phone]

GERMANY

Roland Elektronische
Musikinstrumente
Handelsgesellschaft mbH.

Oststrasse 96, 22844 Norderstedt,
GERMANY
TEL: [phone]

GREECE

STOLLAS S.A.
Music Sound Light

155, New National Road
26422 Patras, GREECE
TEL: [phone]

HUNGARY

Intermusica Ltd.

Warehouse Area ‘DEPO’ Pf.83
H-2046 Torokbalint, HUNGARY
TEL: [phone]

IRELAND

Roland Ireland

Audio House, Belmont Court,
Donnybrook, Dublin 4.
Republic of IRELAND
TEL: [phone]

ITALY

Roland Italy S. p. A.

Viale delle Industrie, 8
20020 Arese Milano, ITALY
TEL: [phone]

NORWAY

Roland Scandinavia Avd.
Kontor Norge

Lilleakerveien 2 Postboks 95
Lilleaker N-0216 Oslo
NORWAY
TEL: [phone]

POLAND

P. P. H. Brzostowicz

UL. Gibraltarska 4.
PL-03664 Warszawa POLAND
TEL: [phone]

PORTUGAL

Tecnologias Musica e Audio,
Roland Portugal, S.A.

RUA SANTA CATARINA
131 - 4000 Porto -PORTUGAL
TEL: [phone]

ROMANIA

FBS LINES

Plata Libertatii 1.
RO-4200 Cheorgheni
TEL: [phone]

RUSSIA

Slami Music Company

Sadojava-Triumfalnaja st., 16
103006 Moscow, RUSSIA
TEL: [phone]

SPAIN

Roland Electronics
de España, S. A.

Calle Bolivia 239 08020 Barcelona,
SPAIN
TEL: [phone]

SWEDEN

Roland Scandinavia A/S
SWEDISH SALES OFFICE

Danvik Center 28, 2 tr.
S-131 30 Nacka SWEDEN
TEL: [phone]

SWITZERLAND

Roland (Switzerland) AG
Musitronic AG

Gerberstrasse 5, CH-4410 Liestal,
SWITZERLAND
TEL: [phone]

UKRAINE

TIC-TAC

Mira Str. 19/108
P.O. Box 180
295400 Munkachevo, UKRAINE
TEL: [phone]

UNITED KINGDOM

Roland (U.K.) Ltd.

Atlantic Close, Swansea
Enterprise Park SWANSEA
SA7 9FJ,
UNITED KINGDOM
TEL: [phone]

MIDDLE EAST

BAHRAIN

Moon Stores

Bab Al Bahrain Road,
P.O. Box 20077
State of BAHRAIN
TEL: 211 005

CYPRUS

Radex Sound Equipment Ltd.

17 Diagorou St., P.O. Box 2046,
Nicosia CYPRUS
TEL: [phone]

ISRAEL

Halilit P. Greenspoon &
Sons Ltd.

8 Retzif Fa'aliya Hashnya St.
Tel-Aviv-Yaho ISRAEL
TEL: [phone]

JORDAN

AMMAN Trading Agency

Prince Mohammed St. P.O. Box
825 Amman 11118 JORDAN
TEL: [phone]

KUWAIT

Easa Husain Al-Yousifi

P.O. Box 126 Safat 13002
KUWAIT
TEL: [phone]

LEBANON

A. Chahine & Fils

P.O. Box 16-5857 Gergi Zeidan St.
Chahine Building, Achrafieh
Beirut, LEBANON
TEL: [phone]

OMAN

OHI Electronics & Trading
Co. LLC

P.O. Box 889 Muscat
Sultanate of OMAN

TEL: 959085

QATAR

Badie Studio & Stores

P.O. Box 62,
DOHA QATAR
TEL: 423554

SAUDI ARABIA

aDawliah Universal

Electronics APL

P.O. Box 2154 ALKHOBAR 31952,

SAUDI ARABIA

TEL: [phone]

SYRIA

Technical Light & Sound
Center

Khaled Ibn Al Walid St.
P.O. Box 13520
Damascus - SYRIA
TEL: [phone]

TURKEY

Barkat Muzik aletleri ithalat
ve ihracat limited ireketi

Siraselviler Cad. Billurcu Sok.
Mucadelle Cikmeze No. 11-13
Taksim. Istanbul. TURKEY
TEL: [phone]

U.A.E.

Zak Electronics & Musical
Instruments Co.

Zabeel Road, Al Sherooq Bldg.,
No. 14, Grand Floor DUBAI
U.A.E.
P.O. Box 8050 DUBAI, U.A.E.
TEL: [phone]

NORTH AMERICA

CANADA

Roland Canada Music Ltd.
(Head Office)

5480 Parkwood Way Richmond
B. C., V6V 2M4 CANADA
TEL: [phone]

Roland Canada Music Ltd.
(Toronto Office)

Unit 2, 109 Woodbine Downs
Blvd, Etobicoke, ON
M9W 6Y1 CANADA
TEL: [phone]

U. S. A.

Roland Corporation U.S.

5100 S. Eastern Avenue
Los Angeles, CA 90040-2938,
U. S. A.
TEL: [phone]

As of June 11, 1999

For EU Countries

This product complies with the requirements of European Directives EMC 89/336/EEC and LVD 73/23/EEC.

For the USA

FEDERAL COMMUNICATIONS COMMISSION

RADIO FREQUENCY INTERFERENCE STATEMENT

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the
FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential
installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in
accordance with the instructions, may cause harmful interference to radio 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 be determined by turning the equipment off and on, the user is encouraged to try to correct the
interference by one or more of the following measures:

– Reorient or relocate the receiving antenna.
– Increase the separation between the equipment and receiver.
– Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
– Consult the dealer or an experienced radio/TV technician for help.

Unauthorized changes or modification to this system can void the users authority to operate this equipment.
This equipment requires shielded interface cables in order to meet FCC class B Limit.

For Canada

NOTICE

This Class B digital apparatus meets all requirements of the Canadian Interference-Causing Equipment Regulations.

AVIS

Cet appareil numérique de la classe B respecte toutes les exigences du Règlement sur le matériel brouilleur du Canada.

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