Yamaha YST-SW120/60 User Manual

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IMPORTANT!
Please record the serial number of this
unit in the space below.
Model:
Serial No.:
The serial number is located on the rear
of the unit.
Retain this Owner’s Manual in a safe
place for future reference.
WARNING
TO REDUCE THE RISK OF FIRE OR
ELECTRIC SHOCK, DO NOT EXPOSE
THIS UNIT TO RAIN OR MOISTURE.
RISK OF ELECTRIC SHOCK
DO NOT OPEN
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 you 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
you to the presence of important
operating and maintenance
(servicing) instructions in the
literature accompanying the
appliance.
Explanation of Graphical Symbols
CAUTION
Active Servo Processing Subwoofer System
Built-in 70W Power Amplifier (YST-SW120)
Built-in 50W Power Amplifier (YST-SW60)
2 Way Selectability for Connections
High Frequency Cut-off Point (HIGH CUT) Control
PHASE Switch
OWNER’S MANUAL
CONTENTS
Safety Instructions ...................2
Features...................................4
Placement................................4
Connections.............................5
Controls and Their Functions
.......8
Adjusting Volume .....................9
Active Servo Technology........11
Troubleshooting......................12
Specifications .........................12
YST-SW120/60
Thank you for selecting this YAMAHA Subwoofer System.
Active Servo
Technology
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Summary of Contents

Page 1 - YST-SW120/60

IMPORTANT!Please record the serial number of thisunit in the space below.Model:Serial No.:The serial number is located on the rearof the unit.Retain t

Page 2 - SAFETY INSTRUCTIONS

10FREQUENCY CHARACTERISTICSAdjustment of the VOLUME control, the HIGH CUT control and the PHASE switch should be changed according to the mainspeakers

Page 3 - FCC INFORMATION

11ACTIVE SERVO TECHNOLOGYThe theory of Active Servo Technology is based upon twomajor factors, the Helmholtz resonator and negative-impedance drive.

Page 4 - PLACEMENT

SYMPTOMPower is not supplied even though thePOWER switch is ON.No sound .Sound level is too low.CAUSEThe power plug is not securely connected.The VOLU

Page 5 - CONNECTIONS

21 Read Instructions – All the safety and operatinginstructions should be read before the unit is operated.2 Retain Instructions – The safety and ope

Page 6 - TO SPEAKERS

3FCC INFORMATIONYAMAHA and the Electronic Industries Association’sConsumer Electronics Group want you to get the most out ofyour equipment by playing

Page 7 - If using two units

4•This subwoofer system employs YAMAHA Active ServoTechnology which YAMAHA developed for reproducinghigher quality super-bass sound. (Refer to page 1

Page 8 - CONTROLS AND THEIR FUNCTIONS

5• Before attempting to make any connections to or from this unit, be sure to first switch OFF the power to this unit and to any othercomponents to wh

Page 9 - YST-SW120 YST-SW60

6If your amplifier has two sets of speaker terminalsFor connections, cut the speaker wires as short as possible. Ifthe connections are faulty, no sou

Page 10 - FREQUENCY CHARACTERISTICS

7CONNECTING TO LINE OUTPUT (PIN JACK) TERMINALS OF THE AMPLIFIER• Leave the main speakers connected to the amplifier.• Amplifier line output terminals

Page 11 - ACTIVE SERVO TECHNOLOGY

8Front panelRear panel1 POWER indicatorIlluminates when the POWER switch is turned ON, andgoes off when turned OFF.2 POWER switchTurns the power of th

Page 12 - SPECIFICATIONS

91 Set the VOLUME control to minimum.2 Turn on the power supply to all the components.3 Play any source and adjust the amplifier’s volume controlto th

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