Roland GK-3B User manual

DIVIDED PICKUP
DK3Ə3Z
Owner’s Manual
Thank you for purchasing the Roland GK-3B divided pickup.
Before using this unit, carefully read the sections entitled:
e USING THE UNIT SAFELY (page 2-3)
e IMPORTANT NOTES (page 3)
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.
Copyright © 2004 Roland CORPORATION
All rights reserved. No part of this publication may be reproduced in
any form without the written permission of Roland CORPORATION.

INSTRUCTIONS
FOR
THE
PREVENTION
OF
FIRE,
ELECTRIC
SHOCK,
OR
INJURY
TO
PERSONS
About
A\
WARNING
and
ÆA
CAUTION
Notices
Used for instructions intended to alert
the user to the risk of death or severe
injury should the unit be used
improperly.
A WARNING
Used for instructions intended to alert
the user to the risk of injury or material
damage should the unit be used
improperly.
 CAUTION
* 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.
a
OBSERVE
THE
FOLLOWING
About the Symbols
general
cautions,
warnings,
or
alerts
to
danger.
means that the unit must never be disassembled.
cord
plug
must
be
unplugged
from
the
outlet.
The
A
symbol
alerts
the
user
to
important
instructions
or
warnings.The
specific
meaning
of
the
symbol
is
ÆA
|
determined
by
the
design
contained
within
the
triangle.
In
the
case
of
the
symbol
at
left,
it
is
used
for
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
The
@
symbol
alerts
the
user
to
things
that
must
be
carried
out.
The
specific
thing
that
must
be
done
is
ee
indicated
by
the
design
contained
within
the
circle.
In
Ù
|
the
case
of
the
symbol
at
left,
it
means
that
the
power-
[Ss
Z\WARNING
O|
~
7AWARNING__
Before
using
this
unit,
make
sure
to
read
the
instructions
below,
and
the
Owner's
Manual.
Do
not
open
or
perform
any
internal
modifications
on
the
unit.
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.
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-
Sey,
generating
equipment),
or
are
A
>
Damp
(e.g.,
baths,
washrooms,
on
wet
floors);
or
are
e Humid; or are
* Exposed to rain; or are
e Dusty; or are
e
Subject
to
high
levels
of
vibration.
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.
*
Do
not
allow
any
objects
(e.g.,
flammable
material,
coins,
pins);
or
liquids
of
any
kind
(water,
soft
drinks,
etc.)
to
penetrate
the
unit.
e Immediately turn the power off, and
request servicing by your retailer, the
nearest Roland Service Center, or an
authorized
Roland
distributor,
as
listed
on
the “Information” page when:
e If smoke or unusual odor occurs
©
Objects
have
fallen
into,
or
liquid
has
been
spilled
onto
the
unit;
or
e The unit has been exposed to rain (or
otherwise has become wet); or
e The unit does not appear to operate
normally or exhibits a marked change
in performance.
ə
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.
e
Protect
the
unit
from
strong
impact.
(Do
not
drop
it!)
l

A CAUTION |
* 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.
e Never climb on top of, nor place heavy
objects on the unit.
e Disconnect all cords coming from external
devices before moving the unit.
e Should you remove the parts of installation
(screws, washers and springs), make sure to
put them in a safe place out of children's
reach, so there is no chance of them being
swallowed accidentally.
IMPORTANT NOTES
In addition to the items listed under “USING
THE UNIT SAFELY,” please read and
observe the following: .
Power Supply
© Before connecting this unit to other devices, turn off
the power to all units. This will help prevent malfunc-
tions and/or damage to speakers or other devices.
Placement
e 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.
¢ Noise may be produced if wireless communications
devices, such as cell phones, are operated in the
vicinity of this unit. Such noise could occur when
receiving or initiating a call, or while conversing.
Should you experience such problems, you should
relocate such wireless devices so they are at a
greater distance from this unit, or switch them off.
* 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 temper-
ature extremes. Excessive heat can deform or
discolor the unit.
e When moved from one location to another where
the temperature and/or humidity is very different,
water droplets (condensation) may form inside the
unit. Damage or malfunction may result if you
attempt to use the unit in this condition. Therefore,
before using the unit, you must allow it to stand for
several hours, until the condensation has
completely evaporated.
Maintenance
¢ 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 impreg-
nated with a mild, non-abrasive detergent. After-
wards, be sure to wipe the unit thoroughly with a
soft, dry cloth.
ə Never use benzine, thinners, alcohol or solvents of
any kind, to avoid the possibility of discoloration
and/or deformation.
Additional Precautions
e 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.
e 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.
* 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).
e 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 equiv-
alent packaging materials.
e Use a cable from Roland to make the connection. It
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.

Contents
Main Features
USING THE UNIT SAFELY.......... 2
IMPORTANT NOTES .............:0000 3
Panel Descriptions........... 5
Attaching the GK-3B
to the Bass ......ccccccccccsesece Ó
Precautions Before Installing ....6
Adjusting the Divided Pickup ....8
Attaching the Divided Pickup ....9
Attaching the Pickup with Double-
Sided Tape ticteadniseaceis steeds neat 9
Attaching the Pickup with Screws..12
Attaching the Controller........... 13
Adjusting the Length of the Pickup
Cablen asanarea ncaah sails 13
Attaching the Controller with the —
Holdet r a a 14
Attaching with Double-sided Tape
oand a CreW hetincriadoraist cetursasinan, Sauce 18
How to Connect
the GK-3B .......cccccescsssees 19
Specifications ........cccccece 21
The GK-3B is a special divided pickup,
which, when installed on an ordinary bass,
allows you to use the bass to play the sounds
of GK-compatible bass devices (Roland GR-
20 or V-BASS etc.).
e With the pickup section featuring six
individual pickup coils, this unit is
compatible even with six-string basses.
e Spacings between the pickup coils are
adjustable in a range from 16 mm (0.68”)
to 19 mm (0.75”), allowing mounting on a
wide variety of different basses.
* Included with the GK-3B are special
holders, spacers, and other accessories,
which allow you to easily attach the unit
to any of a wide variety of bass models.
e You can use the controller switches to
control the various functions of —
connected GK devices.
About the GK-3B Warranty
Roland guarantees the GK-3B (and all
included parts) to be free of defects in
materials and workmanship. Contact your
retailer or nearest Roland Service Center if —
repairs become necessary.
Roland cannot be responsible for any
damage caused to your bass or the GK-3B as
a result of your attempt to install or remove
the GK-3B. If you are not confident with
your ability to properly install the Pickup or
Controller unit (especially where drilling is
involved), please contact your Roland
retailer or nearest Roland Service Center.

Panel
Descriptions
6. DOWN/S1 Switch
7. UP/S2 Switch
2.GK Volume
4. Normal Pickup Input Jack
Controller
1. Divided Pickup |
This is a pickup that senses the vibration of
the bass strings. Attach it by the bridge of
your bass.
2. GK Volume
This controls the volume of the connected
GK
device.
.
* Certain GK-compatible devices also permit the GK
Volume function to be changed. For more detailed
information, refer to the Owner's Manual for the
GK device being connected.
3. GK Connector
Connect the GK device to this connector.
4. Normal Pickup Input Jack
This jack is for inputting the bass’s normal
pickup signals to the GK-3B. Connect using
the normal guitar cable included with the
GK-3B.
Pickup Cable
Center Marker
GAN
1. Divided Pickup
Pickup
5. Select Switch |
This switches between the output from the
connected GK device and the normal bass output.
* Changing the GK Volume function also changes the
function of this switch. For more detailed
information, refer to the Owner's Manual for the
GK device being connected.
6. DOWN/S1 Switch
7. UP/S2 Switch
The function of the $1 and S2 switches varies
according to the connected GK device. For
more detailed information, refer to the
Owner’s Manual for the GK device being
connected.
8. Power Indicator
This indicates that power is being supplied to
the GK-3B. Power to the GK-3B is supplied by
the connected GK device via the GK cable. No
batterv or other power source is required.
2
5

Attaching the GK-3B to the Bass
The GK-3B can be attached to and used with conventional electric basses. Please read the
following precautions before installing the GK-3B.
Precautions Before Installing
Do not use the GK-3B on basses with
doubled strings or other highly
customized basses, piccolo basses and
other basses with unusual tunings, or
basses with other non-metallic core
strings. The pickup may not function
properly in such cases.
Make any adjustments to the bass neck,
string height, and other such
modifications before installing the GK-3B.
Try placing the divided pickup and the
controller unit on the bass before actually
attaching them to confirm that there will
be no problem with the installation.
When using the screw to attach the
controller, we recommend that you first
attach the GK-3B temporarily using the
special holder, then after confirming that
there are no problems when actually
performing with the unit, secure it with
the screw.
If only the double-sided tape is used to
attach the controller, shocks from rough
handling during performances and from
extended use will cause the tape to
deteriorate, with the controller shifting
out of position as a result. Also, if the
finish on your bass is less than perfect,
you may discover that the finish is also
removed when you later remove the tape.
The supplied tape is intended to be used
only very temporarily, to help you
determine the optimum position for the
controller. .
With certain basses, the space between
the pickup at the bridge position and the
bridge itself is too narrow to allow
installation of the divided pickup. In such
instances, it may be possible to attach the
pickup by modifying the bass (for
example, by moving the bridge pickup
more towards the neck to make room for
the divided pickup); consult your bass
dealer.
When attaching the GK-3B to the bass,
you should try to orient the unit so no
buttons or controls get damaged, and
handle with care to avoid dropping it, or
allowing it to fall or tip over.

Attaching the GK-3B to the Bass
Confirm
that
the
package
contains
all
of
the
following
parts
for
installing
the
GK-3B.
Flat-head Screw 3x16 mm
x 1 (for installing
the Controller)
Wood Screw 3x20 mm
x 2 (for installing
the Divided Pickup)
Spring
x 2 (for installing
the Divided Pickup)
Double-sided tape A
4 x 3 (for installing
the Controller)
Double-sided tape B
x 2 (for installing
the Divided Pickup)
Controller Cushion
x 1 (tor installing
the Controller)
Hoider A
Normal Guitar Cable
oneal
Pickup Cushion
x4
(for installing
the Divided Pickup)
Pickup Spacer A
(Thickness: 3 mm)
x2
(for adjusting the height of
the Divided Pickup)
Pickup Spacer B
(Thickness: 1 mm)
x5
(for adjusting the height of
the Divided Pickup)
Pickup Spacer C
(Thickness: 0.25 mm)
x4
(for adjusting the height of
the Divided Pickup)
Holder B
Hexagon Socket Screw Key
x1
—
Screw 5 x 20 mm
x 1 (for attaching
the Holder B)
Screw 5 x 8 mm
F x2 (for attaching
the Holder C)
Spring Washer
@. x2 (for attaching
the Hoider C)
Flat Washer
eB, x2 (for attaching
re the Holder C)
Clearance Gauge
Holder C
Screwdriver

Attaching the GK-3B to the Bass
Adjusting the Divided Pickup
As
string
spacings
vary
with
the
model
of
the
bass,
the
spacing
between
each
of
the
coils
in
the
pickup
must
be
adjusted
to
match
the
particular
bass.
Unless
this
adjustment
is
made
accurately,
the
GK-compatible
device
will
not
function
at
its
full
potential,
or
may
not
operate
correctly.
Please
make
this
adjustment
with
care.
1.
Measure
the
distance
between
strings
2.
Use
the
included
screwdriver
to
loosen
on
your
bass.
the
screws,
move
the
markers
to
the
To
determine
the
distance
between
each
position
of
the
appropriate
distance
string,
you
can
measure
the
distance
between
each
string,
and
tighten
the
between
string
1
and
string
4
(or
screws.
depending on the number of strings, 5 or
6) at the location in which to install the
pickup (p. 9-p. 12), and divide by one less
Be careful not to tighten the screws excessively.
. : : 2nd st k Sth st k
than
the
number
of
strings
(i.e.,
in
the
case
ee
a
eae
ose aS aose. CAO
of a four-string bass, divide by three). = >
r
19
18 17 16
18
37
16mm
16
7
8
19mm
4
3 2
1
String
“Position
etal-
j LT rT
9 e, excessive force.
Senter
pale
Be
especially
careful
with
those
at
both
sides
of
the
Measure the distance l markers.
between these two strings.
This. adjustment made so that both markers are at-
the same position.
* Be careful when moving the markers; do not use
Example: a distance of 57 mm
57 divided by (4-1) = 19 mm
A gauge with pitches of 16, 17, 18, and 19
" mm is printed on the GK-3B package, and
you can also determine the spacing by
placing this gauge against your bass.

Attaching the GK-3B to the Bass
Attaching the Divided Pickup
There are two ways to attach the divided pickup.
© Attaching the Pickup with Double-
Sided Tape (p. 9)
This provides the simplest way to attach the
pickup to flat-top basses.
*
*
@ Attaching the Pickup with Screws (p. 12)
This method features the benefit of allowing
the pickups to be finely adjusted later on, but
it is somewhat difficult to carry out.
Do
not
place
any
unnecessary
strain
on
the
cable
connecting
the
pickup
and
the
controller.
This
may
result
in
breaking.
Do
not
bend or
twist
the
pickup.
Use
particular
care
when
removing
the
pickup.
E
Attaching
the
Pickup
with
Double-Sided
Tape
1. You decide on the location in which to
install the pickup. |
For a 4-string bass:
Attach the divided pickup so that the center
marker is between strings 2 (D) and 3 (A),
the 2nd string marker is directly below string
1 (G), and the 5th string marker is directly
below string 4 (E).
(Viewed from above)
4 3 2- 1 String
2nd string marker
5th string marker
»
Depending on the GK-compatible device, it is
possible to install the pickup so that the center
marker is between strings 1 and 2, or between
strings 3 and 4. Refer to the manual for your GK-
compatible device.
For a 5-string bass:
Attach the divided pickup so that the center
marker is between strings 2 (D) and 3 (A),
the 2nd string marker is directly below string
1 (G), and the 5th string marker is directly
below string 4 (E).
5 4 3 2 1 String
Q © C
Depending on the GK-compatible device, it ts
possible to install the pickup so that the center
marker is between strings 3 and 4. Refer to the
manual for your GK-compatible device. i
For a 6-string bass:
Attach the divided pickup so that the center
marker is between strings 3 (D) and 4 (A),
the 2nd string marker is directly below string
2 (G), and the 5th string marker is directly
below string 5 (E).
1 String

Attaching the GK-3B to the Bass
a A I TE BN IRE eT ET EE EEE DS TT SEE TS oe
*
The divided pickup must be installed in the correct
orientation. Make sure that the cable from the
divided pickup is extending from the bridge side.
When mounting the pickup on a left-handed bass,
orient the pickup with the cable extending towards
the neck.
10
Install the divided pickup close to the bridge. In any
case, do not install the pickup more than 50 mm
away from the bridge.
| maximum 50 mm |
When you have decided on the location in which to
install the pickup, use pencil or tape to mark that
location. l
Tune each string to its normal tuning,
and then be sure the neck curvature
and string height are set properly.
Any adjustments to the neck bow or.
string height should be done at this point.
Changes in the string height following installation
of the divided pickup may cause the clearance
between the strings and the pickup to change, which
can result in poorer sensitivity. «
Adjust the height of the pickup.
Insert the supplied spacers under the
pickup until it is at the required height
(do not remove the backing from the tape
yet).
There are three types of pickup spacers,
“A” (3 mm), “B” (1 mm) and “C” (0.25
mm); combine these as necessary to
achieve the proper pickup height.
The pickup height should be set so that the clearance
between the strings and the pickup is approximately
1.5 mm (0.6") when the top and bottom strings are
pressed at the highest fret. Adjust the number of
spacers while confirming the clearance with the
included (1.5 mm thickness) clearance gauge (p. 12).
If the top and bottom string heights differ greatly
when the highest fret is fingered, compensate by
adding the appropriate half-length or one-third
length spacers until the clearance for both strings is
the same.
When using an arch-top bass, put the pickup
cushions under the pickup spacers.
_ Pickup
—~ Spacer
QO Pickup
Cushion
Adjust the pickup cushion thickness as required, for
example by using two pickup cushions.
The pickup spacers and the pickup cushions are
attached to the bass with double-sided. tape. When
affixing the tape, however, the tape’s thickness ts
reduced by 0.1 mm (0.004") when the backing of the
tape is removed. Therefore, when using several
pickup spacers, take this fact into account and set the
height slightly higher to compensate.
4. Remove the strings from the bass.

- Attaching the GK-3B to the Bass
5.
Remove the backing from the tapes for
the pickup cushion, the pickup
spacers, and the pickup, and carefully
attach the pickup to the bass.
After affixing these items, press them so that the
items adhere firmly.
Wipe off any dust that may be on the location to
which you're affixing the double-sided tape. If the
location is dusty or dirty, the double-sided tape may
not adhere sufficiently.
Restring and tune the bass, then
carefully check the height of the
divided pickup once more.
Measure with the clearance gauge to
confirm that the clearances between the
pickup and the strings are approximately
1.5 mm (0.06”) when you press the top
and bottom strings at the highest fret,
then finish up by making sure that the
strings do not touch the pickup when you
play the bass.
Then attach the cord hook near the
bridge, and fasten the pickup cable in the
hook so that it does not lift up or touch
the strings. |
Cord Hook
Take the steps below if the height of
the divided pickup is not right.
1) Carefully examine the pickup in its
current state, and add a suitable
number of spacers if the pickup is
too low, or remove one or more
spacers if the pickup is too high.
2) Remove the strings from the bass.
3) Remove the divided pickup from the
bass. |
Use care in handling the divided pickup; bending or
twisting it may cause breaking in the coil elements.
Carefully insert something thin and flat (like a table
knife) under the Pickup from the bottom string side,
then gently pry the pickup upwards.
4) After removing the pickup, carefully
remove the double-sided tape from
the bottom of the pickup.
5) Adjust the height of the Pickup.
If you wish to add a spacer, first
completely remove the used double-
sided tape from the top surface of
the existing spacers, then add the
new spacer. .
If you need to remove any spacers,
remove the necessary number of
spacers and completely remove the
remaining double-sided tape from
the top surface. |
6) Attach a piece of the new double-sided
tape B to the bottom of the pickup.
7) Attach the pickup to the top of the
spacer that is applied to the bass side.
8) Restring and tune the bass, then
check the height of the Divided
Pickup again.
11

Attaching the GK-3B to the Bass
Sag na aR SA TR Ts SSS Pd a OTR ES TL OS
* Afterwards, you will need to adjust the pickup sensitivity when connecting to GK devices. However, you may find that
the sensitivity level on the GK device is too high. In such instances, you may be able to correct the problem by widening
the clearance between the strings and the pickup. Carry out Steps 1 through 8 again to lower the Pickup height slightly.
ii ee EE
e Clearance Gauge
_ The divided pickup height must be adjusted so that the clearance between each string and
_ the divided pickup is 1.5 mm (0.06”) when the highest fret is fingered.
The clearance gauge supplied with the GK-3B is 1.5 mm thick; place the gauge between the
strings and the divided pickup as shown in the figure below, then check and adjust the height.
E Attaching the Pickup with Screws
The
steps
for
determining
the
position
for
*
Make
the
pilot
holes
approximately
2
mm
(0.08”)
in
attaching
the pickup
and
for
checking
the
diameter.
height
are
exactly
the
same
as
when
using
*
=
Drill
pilot
holes
slightly
more
than
2
mm
in
diameter
if
the
double-sided
tape.
Refer
to “Attaching
the
bass
body
is
made
of
a
particularly
hard
material.
the
Pickup
with
Double-Sided
Tape”
(p.
9).
4.
Place
the
springs
between
the
pilot
* If mounting the GK-3B with screws, ensure a holes and the pickup as shown in the
minimum
string
clearance
of
15.5
mm
(0.6")
from
the
figure
below,
then
secure
the
pickup
3
body at the position where the pickup is positioned. a
i ! PESA with the screws.
onl æ
Determine the position for attaching
the pickup. When you have determined
the positioning, mark the position of
the holes at each end of the pickup on
the bass’s body.
eau)
2. Remove the strings from the bass.
3. Using a drill or similar means, open
pilot holes where the attachment
screws are to go in.
* If the pilot holes are not made in the correct
positions, then the pickup will not be attached in the |
correct position either. Use extra care when drilling | Pilot Hole
the pilot holes. E aA
12

Attaching the GK-3B to the Bass
5. Restring and tune the bass.
6. Adjust the height of the pickup.
*
Attaching the Controller
Adjust the mounting screws, loosening or tighten
them as required so that the clearance between the
strings and the pickup is approximately 1.5 mm
(0.06”) when the top and bottom strings are pressed
at the highest fret. Check the height using the
supplied clearance gauge (1.5 mm thickness).
Afterwards, when connecting to GK devices, you
will need to adjust the pickup sensitivity again.
However, you may find that the sensitivity level on
the GK device is too high. In such instances, you
may be able to correct the problem by widening the
clearance between the strings and the pickup, so try
lowering the Pickup height slightly to see if this
approach is effective.
If the springs are too long, use a pair of wire clippers
to cut them to the correct size.
There are two ways to attach the controller.
© Attaching the Controller Unit with
Holder (p. 14)
This allows the controller to be mounted
easily, with no modification of the body
required.
@ Attaching the Controller Unit with
Double-Sided Tape and Screws (p. 18)
This allows the controller to be mounted at
any desired position on the bass, and
without the use of the holder, makes for a
thinner controller following installation.
However, it is somewhat difficult to carry
out.
E Adjusting the Length of the Pickup Cable
Place the controller where it is actually to be attached to the bass to check the pickup cable
length. If the cable is too long, wind it up in the space behind the controller.
13

Attaching the GK-3B to the Bass
E Attaching the Controller with the Holder
Refer to the following figures showing examples of ways to mount the controller, then select
the most suitable method for the bass at hand.
Installation Examples
Example 1) Mounting on the Front of the Bass Example 3) Mounting on the Back of the Bass
This method is recommended for basses If there is insufficient space to install the
with sufficient space on the bass’s top ‘to controller on the bass top, you can use this
mount the controller (p. 15). method to mount the controller to the back
of the bass (p. 17).
Example 2) Mounting Over the Bridge
If there is insufficient space to install the
controller on the bass top, you can use this
method to mount the controller over the
bridge (p. 16).
14

Attaching the GK-3B to the Bass
Mounting on the Front of the Bass
1. Remove three screws from the 3. Tighten holders “A” and “B” using the
underside of the controller, then attach screw (5 x 20 mm).
the GK-3B to holder “A.”
Screw
5 x 20mm
* Holder A has six screw holes. Refer to the figure to
ensure the holder is attached correctly. .
_ 2. Attach holder “B” so that the bass
body is sandwiched between the two
holders. .
*
Make sure that Holder A is firmly pressed against
the side surface of the bass body.
Holder A
5 x 20 mm
15

Attaching the GK-3B to the Bass
Mounting Over the Bridge
1.
2.
Attach holders “A” and “B” so that the
bass body is sandwiched between the
two holders.
Holder A attaches to the back surface of the bass.
Make sure that Holder A is firmly pressed against
the side surface of the bass body.
4 ~— Screw
5x20mm .
~—~ Holder B
Holder A
Remove three screws from the
underside of the controller, then attach
the GK-3B to holder “C.”
~— Holder C
== GK-3B
3. Secure Holder “c,” with the controller
attached to it, to Holder “B” using the
flat washers, spring washers and
screw (5 mm x 8 mm).
Spring Washer ~~ %)
Pad
Screw 5 x 8 mm
If Holder “C” makes contact with the strings and
interferes with performance, attach the controller
cushion to Holder “C” so as to lift Holder “C” away
from the instrument and prevent it from reaching
the strings.
First, insert the controller cushion between the bass
and the holder, and determine a position that
ensures that none of the string vibration will be
disturbed. Then, affix the cushion.
“> Controller
S 4 Cushion
\ ~— Holder C
Controller A
Un ae Rd
à e AAA
Bie
16

Attaching the GK-3B to the Bass
Mounting on the Back of the Bass
1. Remove three screws from the 3. Tighten holders “A” and “B” using the
underside of the controller, then attach screw (5 x 20 mm).
the GK-3B to holder “A.” |
5x20mm
+ Holder B
HolderA -
* Holder A has six screw holes. Refer to the figure to
ensure the holder is attached correctly.
2. Attach holder “B” so that the bass
body is sandwiched between the two
holders.
*
Make sure that Holder A is firmly pressed against
the side surface of the bass body.
ie
~ Holder B
17

Attaching the GK-3B to the Bass
E Attaching with Double-sided Tape and a Screw
1.
Place the controller in an appropriate
position on the bass surface to determine
where it is to be attached. Pay attention to
the following points at this time.
Install on a level surface.
Position the controller so it does not
interfere with your playing.
Position the controller so you can
comfortably operate the select switch, the
S1 and S2 switches, and other controls.
Position the controller so that it does not
place undue strain on the normal pickup
input jack, divided pickup, or GK cable.
Make sure that the plugs connected to the GK
connector and normal pickup input jack do not stick
out, as this may result in damage should undue
strain be placed on the GK connector or normal
pickup input jack.
Once the controller position has been
determined, place the controller in
position and carefully drill a pilot hole
in the bass body where the controller’s
attachment hole is located.
The diameter of the hole should be about 2 mm (0.08").
Confirm that there “are no other problems in
attaching the controller before drilling the pilot hole.
After attaching the double-sided tape
“A” to the underside of the Controller,
attach the controller to the bass.
4. Secure the controller with the supplied
flat-head screw (3 x 16 mm).
Put the flat-head screw (3x16 mm)
through this hole. i
If you'd rather not drill a hole in your bass, you can
secure the Controller using only the double-sided
tape or the holders. However, if only the double-
sided tape is used to secure the unit, shocks from
rough handling during performances and from use
over an extended period will cause the tape to
deteriorate, with the GK-3B shifting out of position
as a result. Furthermore, if the finish on your bass is
less than perfect, you may discover that the finish is
also removed when you later remove the tape.

‘How to Connect the GK-3B
* To prevent malfunction and/or damage to speakers * — The GK cable is a locking cable. When disconnecting
or other devices, always turn down the volume, and the cable, do not pull on it with undue force, but
turn off the power on all devices before making any instead release the lock and gently disconnect the
connections. cable. You can disconnect the cable simply and
* When all devices are properly connected, turn on the > easily by holding down the locking portion with
power to the various devices in the order specified your thumb and gently pulling on the plug.
below. Turning on devices in the wrong order may
result in malfunction and/or damage to speakers and
other devices.
1. Make sure that the power to the device
being connected is turned off, then
connect the device to the GK-3B’s GK
connector using the GK cable.
Before playing, be sure to wrap the cable around the
guitar strap near the end pin. This will prevent the
excess strain on the cable that can end up damaging
the bass or the GK-3B.
GK device
Connect the GK-3B only with dedicated GK
cable (supplied with Roland GK-compatible
devices and optional GK cables sold by
Roland). Use of any other cable may result in
damage or malfunction.
19

How to Connect the GK-3B
2. Use the included normal guitar cable
to connect the output jack on the bass
to the GK-3B’s normal pickup input
jack.
aN
Normal
Guitar Cable
* Connect using the included normal guitar cable or a
commercially available guitar cable.
Note that the use of connection cables that introduce
additional resistance may result in lower normal
bass volume.
* This connection is necessary not only for playing the
bass’s normal (straight) sound as well as the bass’s
straight sound mixed with the sound from the
connected GK device, but also for connecting the.
bass’s ground and the GK-3B’s ground. Even if you
are not going to use the bass’s straight sound at all,
always make this connection because of the noise
reduction benefits it provides.
3. Turn.on the power to the connected
GK device.
The Power indicator. on the controller
lights up. Now, when you play your bass
you'll hear the sound of the connected
GK device.
* The power indicator lights up when the GK-3B and
the GK device are properly connected with a GK
cable and the power to the GK device is turned on.
* Always make sure to have the volume level turned
down before switching on power. Even with the
volume all the way down, you may still hear some
sound when the power is switched on, but this is
normal, and does not indicate a malfunction.
‘SSS a mR a A ST SE I SI a Ne
20