Roland US-20 User manual

INTRODUCTION
Thank you, and congratulations on your
choice of the Roland US-20 Unit Selector.
The US-20 is a Unit Selector that allows you to
connect two devices that feature a GK IN con-
nector (such as GR Guitar Synthesizer, VG
V
•Guitar System, GI-10 Guitar-MIDI Interface,
etc.) and select to play whichever one you
want, or play both of them at the same time
using one guitar.
To ensure proper operation, and many years
of trouble-free service, please take the time to
read through this Owner’s Manual before
starting out.
IMPORTANT NOTES
Placement
• Do not subject the unit to temperature
extremes (eg., direct sunlight in an enclosed
vehicle). Avoid using or storing the unit in
dusty or humid areas, or areas that are subject
to high levels of vibration.
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 mild, non-abrasive detergent.
Afterwards, be sure to wipe the unit thorough-
ly with a soft, dry cloth.
• Never use benzene, thinners, alcohol or sol-
vents of any kind, to avoid the possibility of
discoloration and/or deformation.
Additional Precautions
• Protect the unit from strong impact.
Copyright © 1995 ROLAND CORPORATION
All rights reserved. No part of this publication may be reproduced in any form
without the written permission of ROLAND CORPORATION.
• Do not allow objects or liquids of any kind to
penetrate the unit. In the event of such an
occurrence, discontinue use immediately.
Contact qualified service personnel as soon as
possible.
• Should a malfunction occur, or if you suspect
there is a problem, discontinue use immediate-
ly. Contact qualified service personnel as soon
as possible.
CONTENTS
PANEL DESCRIPTIONS..........................................2
MAKING THE CONNECTIONS............................2
UNIT SELECTION....................................................3
Unit Selection with the [A/B] Pedal Switch..........3
Unit Selection with the [BOTH] Pedal Switch ......3
SPECIFICATIONS.....................................................3
Service Information...................................................4

PANEL DESCRIPTIONS
1. Unit Connectors
Here is where you connect units (such as those
in the GR series, VG series, or GI-10) capable of
being played with a divided pickup (GK-2A;
available separately). Use the 13-pin special-
ized cable (C-13D) supplied with the US-20.
UNIT A Connector
The unit connected to this connector can be
played when [A] has been selected with the
[A/B] pedal switch on the top panel.
UNIT B Connector
The unit connected to this connector can be
played when [B] has been selected with the
[A/B] pedal switch on the top panel.
2. GK IN Connector
Connect a divided pickup (GK-2A; available
separately) to this connector using the 13-pin
specialized cable (e.g., C-13A, C-13C, C-13D)
or the GK cable (GKC-3, GKC-5; available sep-
arately) supplied with your GR series synth or
other unit.
3. [A/B] Pedal Switch
This is the pedal switch that allows you to
select which device is to be played, either the
one connected to the UNIT A connector, or the
one connected to UNIT B.
4. [BOTH] Pedal Switch
When switched ON, this pedal allows you to
play both of the devices connected to the Unit
connectors at the same time.
MAKING
THE CONNECTIONS
After the GK-2A has been installed properly
on your guitar, make the connections as shown
below. For details on how to set up the GK-
2A, please read the GK-2A’s owner’s manual.
* Make sure that all the units are switched off before
making connections. If you make connections
without switching off the units, speakers or other
units may be damaged.
* Be sure to use only the supplied cables (e.g., C-
13A, C-13C, C-13D) or the GK cables (GKC-3,
GKC-5; available separately). Using any other
cables can cause problems. Also, make sure that
the combined length of the cable run, stretching
from the GK-2A through the US-20 to Unit A (or
B), does not exceed 10 meters. For this reason, the
C-13B (10 m) and the GKC-10 (10 m) cable cannot
be used, because it is too long for proper operation.
* Power to the US-20 is supplied by the unit con-
nected to the UNIT A connector, through the 13-
pin specialized cable. The power to the GK-2A is
also supplied from UNIT A, via the US-20.
Therefore, if you connect a device only to the UNIT
B connector, neither the US-20 nor the GK-2A will
work. To use only one device, connect it to the
UNIT A connector.
2
3 4
1
Guitar with GK-2A
US-20
GR series
VG series
2

UNIT SELECTION
Now that you have finished making the con-
nections, you are ready to use the US-20 to
select units to be played.
1. Set the Select switch on the GK-2A to [SYNTH].
2. Rotate [SYNTH VOL] on the GK-2A fully
clockwise.
3. Play the guitar.
Unit Selection with
the [A/B] Pedal Switch
Depress the [A/B] pedal, and the unit to be
played will change. You can tell whether UNIT
A or B is currently selected by viewing the LED.
Red : The unit connected to UNIT A is selected.
Green :The unit connected to UNIT B is selected.
Information about the setting for [SYNTH
VOL] on the GK-2A and whether [DOWN/S1]
or [UP/S2] has been pressed or not will be
sent only to the currently selected unit.
Unit Selection with
the [BOTH] Pedal Switch
Depress the [BOTH] pedal, and the LED will
light in yellow and both units connected to
UNIT A and B will be heard. However, infor-
mation about whether [DOWN/S1] and
[UP/S2] have been pressed or not will be sent
only to the device selected with the [A/B]
pedal switch.
Depress the pedal again, and the LED will go
out and only the device selected with the
[A/B] pedal switch will be heard.
* If you set the Select switch on the GK-2A to [MIX]
or [GUITAR], the direct sound from the guitar can
be heard. This guitar sound cannot be controlled
with [SYNTH VOL] on the GK-2A or the [A/B]
pedal switch on the US-20.
That is, if you set the Select switch on the GK-
2A to [MIX] or [GUITAR], the guitar sound
will be output through the Guitar Out jack on
the device connected to UNIT A and B, even if
the [A/B] pedal has been used to select UNIT
A or B.
* When use with the Roland GR series, please set the
GK-2A
Synth Volume Function to “synth vol-
ume."
* When use with the Roland VG series, please set the
GK-2A Synth Volume Function to “master vol-
ume" or “pickup level."
SPECIFICATIONS
US-20 : Unit Selector
• Connectors
GK In Connector
Unit A Connector
Unit B Connector
• Dimensions
160(W) x 134(D) x 38(H) mm
6-5/16(W) x 5-5/16(D) x 1-1/2(H) inches
• Weight
0.6 kg
1 lbs 6 oz
• Accessories
GK Connecting Cable : C-13D(1.2m) x 2
Owner’s Manual
• Options
Divided Pickup : GK-2A
GK cable : GKC-3 (3 m), GKC-5 (5 m)
* In the interest of product development, the specifi-
cations and/or appearance of this unit are subject
to change without prior notice.
3
This product complies with the requirements of
European Directive 89/336/EEC.
For Europe

Information
When you need repair service, call your nearest Roland Service Center or authorized Roland distributor in your country as
shown below.
As of May 15, 2001 (Roland)
ARGENTINA
Instrumentos Musicales S.A.
Florida 656 2nd Floor
Office Number 206A
Buenos Aires
ARGENTINA, CP1005
TEL: [phone]
BRAZIL
Roland Brasil Ltda
Rua San Jose, 780 Sala B
Parque Industrial San Jose
Cotia - Sao Paulo - SP, BRAZIL
TEL: [phone] 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]
MEXICO
Casa Veerkamp, s.a. de c.v.
Av. Toluca No. 323, Col. Olivar
de los Padres 01780 Mexico D.F.
MEXICO
TEL: [phone]
PANAMA
SUPRO MUNDIAL, S.A.
Boulevard Andrews, Albrook,
Panama City,
REP. DE PANAMA
TEL: [phone]
U. S. A.
Roland Corporation U.S.
5100 S. Eastern Avenue
Los Angeles, CA 90040-2938,
U. S. A.
TEL: [phone]
VENEZUELA
Musicland Digital C.A.
Av. Francisco de Miranda,
Centro Parque de Cristal, Nivel
C2 Local 20 Caracas
VENEZUELA
TEL: [phone]
AUSTRALIA
Roland Corporation
Australia Pty., Ltd.
38 Campbell Avenue
Dee Why West. NSW 2099
AUSTRALIA
TEL: [phone]
NEW ZEALAND
Roland Corporation Ltd.
32 Shaddock Street, Mount Eden,
Auckland, NEW ZEALAND
TEL: [phone]
HONG KONG
Tom Lee Music Co., Ltd.
Service Division
22-32 Pun Shan Street, Tsuen
Wan, New Territories,
HONG KONG
TEL: [phone]
CHINA
Beijing Xinghai Musical
Instruments Co., Ltd.
6 Huangmuchang Chao Yang
District, Beijing, CHINA
TEL: [phone]
Shanghai Xingtong Acoustics
Equipment CO.,Ltd.
Rm.1108, No.2240 Pudong South
Road Shanghai, CHINA
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 IntiRama
J1. Cideng Timur No. 15J-150
Jakarta Pusat
INDONESIA
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]
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]
BAHRAIN
Moon Stores
Bab Al Bahrain Road,
P.O. Box 20077
State of BAHRAIN
TEL: 211 005
VIETNAM
Saigon Music
138 Tran Quang Khai St.,
District 1
Ho Chi Minh City
VIETNAM
TEL: [phone]
JORDAN
AMMAN Trading Agency
Prince Mohammed St. P.O. Box
825 Amman 11118 JORDAN
TEL: [phone]
KUWAIT
Easa Husain Al-Yousifi
Abdullah Salem Street,
Safat KUWAIT
TEL: [phone]
LEBANON
A. Chahine & Fils
P.O. Box 16-5857 Gergi Zeidan St.
Chahine Building, Achrafieh
Beirut, LEBANON
TEL: [phone]
QATAR
Al Emadi Co. (Badie Studio
& Stores)
P.O. Box 62,
DOHA QATAR
TEL: [phone]
SAUDI ARABIA
aDawliah Universal
Electronics APL
Corniche Road, Aldossary Bldg.,
1st Floor
SAUDI ARABIA
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 Ltd Sti
Siraselviler cad.Guney is hani 84-
86/6, Taksim. Istanbul. TURKEY
TEL: [phone]
U.A.E.
Zak Electronics & Musical
Instruments Co. L.L.C.
Zabeel Road, Al Sherooq Bldg.,
No. 14, Grand Floor DUBAI
U.A.E.
TEL: [phone]
EGYPT
Al Fanny Trading Office
P.O. Box 2904,
El Horrieh Heliopolos, Cairo,
EGYPT
TEL: [phone]
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 Melle St., Braamfontein,
Johannesbourg
Republic of SOUTH AFRICA
P.O.Box 32918, Braamfontein 2017
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]
CYPRUS
Radex Sound Equipment Ltd.
17 Diagorou St., P.O. Box 2046,
Nicosia CYPRUS
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 HmbH.
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.
Cais Das Pedras, 8/9-1 Dto
4050-465 PORTO
PORTUGAL
TEL: [phone]
RUSSIA
MuTek
3-Bogatyrskaya Str. 1.k.l
107 564 Moscow, RUSSIA
TEL: [phone]
SPAIN
Roland Electronics
de España, S. A.
Calle Bolivia 239, 08020
Barcelona, SPAIN
TEL: [phone]
SWITZERLAND
Roland (Switzerland) AG
Musitronic AG
Gerberstrasse 5, Postfach,
CH-4410 Liestal, SWITZERLAND
TEL: [phone]
SWEDEN
Roland Scandinavia A/S
SWEDISH SALES OFFICE
Danvik Center 28, 2 tr.
S-131 30 Nacka SWEDEN
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]
KOREA
Cosmos Corporation
1461-9, Seocho-Dong,
Seocho Ku, Seoul, KOREA
TEL: [phone]
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]
AFRICA
CHILE
Comercial Fancy ΙΙ S.A.
Avenida Rancagua #0330
Providencia Santiago, CHILE
TEL: [phone]
URUGUAY
Todo Musica S.A.
Cuareim 1844, Montevideo,
URUGUAY, CP11200
TEL: [phone]
EUROPE
AUSTRALIA/
NEW ZEALAND
ASIA
CENTRAL/LATIN
AMERICA
NORTH AMERICA
MIDDLE EAST
AFRICA
EL SALVADOR
OMNI MUSIC
75 Avenida Notre YY Alameda,
Juan Pablo 2, No. 4010
San Salvador, EL SALVADOR
TEL: [phone]
ROMANIA
FBS LINES
Piata Libertatii 1,
RO-4200 Gheorghehi
TEL: [phone]
PARAGUAY
Distribuidora De
Instrumentos Musicales
J.E. Olear y ESQ. Manduvira
Edeficio, El Dorado Planta Baja
Asuncion PARAGUAY
TEL: [phone]
PERU
VIDEO Broadcast S.A.
Portinari 199 (ESQ. HALS),
San Borja, Lima 41,
REP. OF PERU
TEL: [phone]
COSTA RICA
JUAN Bansbach
Instrumentos Musicales
Ave.1. Calle 11, Apartado 10237,
San Jose, COSTA RICA
TEL: [phone]
CRISTOFORI MUSIC PTE
LTD
Blk 3014, Bedok Industrial Park E,
#02-2148, SINGAPORE 489980
TEL: [phone]
IRAN
MOCO, INC.
No.41 Nike St.Dr.Shariyati Ave.
Roberoye Cerahe Mirdamad
Tehran, IRAN
TEL: [phone]
ISRAEL
Halilit P. Greenspoon &
Sons Ltd.
8 Retzif Ha'aliya Hashnya St.
Tel-Aviv-Yafo ISRAEL
TEL: [phone]