O P E R A T I N G I N S T R U C T I O N S
ST-3103
ASW-138
ST-20
ST-3108
ASW-158
ST-20
SPEAKER SYSTEM
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Rear Panel Controls
A S W-158
According to phase, contol it from 0 to 180.
If it dose not match, low sound range
would be decreased.
①
POWER SWITCH
·
Press this switch to turn the power on,
then this unit enters the operating
mode.
The color of LED turns green.
④ Low level Input
Please connect low level input to
Subwoofer input of receiver or amplifer.
·
To turn the power off, press this switch
again, then the power is cut off and
this unit enters the power off mode.
⑤ AC INPUT CORD
AC 220V/60Hz. Please check the voltage
of yours. Plug this cord into a wall AC outlet.
② VOLUME CONTROL KNOB-FRONT
Use this knob to adjust the volume level of
the subwoofer
·
Increasing the volume level of the
subwoofer excessively may impair the
sound quality or damage the unit.
For safe operation, set this knob to
center position in general use.
③ Control of Phase
A S W-138
ST-20
2
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System Connections
· This ST-3103/3108 is designed to use together with
Sherwood’s products.(amplifier/DVD receiver/etc)
Doing so will allow you to operate easily and
conveniently.
In case of connecting other amplifier or receiver to
this unit, contact your dealer or our service
organization.
· Never short circuit the + and - speaker cords.
· Be sure to connect speakers firmly and correctly
according to the channel (left and right) and the
polarity (+ and -).
· Be sure to use the main speakers with the
impedance of over 6Ω .
· When this unit is placed next to the record player,
etc., the howling noise may be heard. In this case,
place this unit apart from the record player, etc.
· For proper connections, refer to the operating
instructions of the component connected.
Notes :
· Because the low frequencies produced by this
subwoofer are non-directional, the placement of this
unit is not critical,. Place this unit by a wall or corner
of the room, etc. as desired.
· Do not connect this unit to the wall AC outlet when
plugging and unplugging connection cords.
· Be sure to connect the RCA cord to Audio Input jack
of active subwoofer when making connections.
3
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Troubleshooting Guide
If this unit does not perform as expected, consult the table below to see if the problem can be corrected before
seeking help from your dealer or our service organization.
PROBLEM
POSSIBLE CAUSE
REMEDY
No Power
· The AC input cord is disconnected.
· The POWER switch on the rear panel is
not pressed.
· Connect the cord securely.
· Press the POWER switch to ON.
· Incorrect connection between the
components.
· Make connections correctly.
· Operat the component correctly.
No sound
· Incorrect operation of the component
connected.
· The unit runs at excessively high volume · Decrease the volume level or adjust the
Distorted sound
level.
corssover frequency.
· The PHASE switch is set to the opposite
position.
· Set the PHASE switch correctly.
Less bass and poor
imaging
Specifications
■ ASW-158
• Frequency Response
60~20KHz
• Power, 35Hz, Impedence 6Ω
• Sound Pressure Level
• Power Supply
80 W
86dB/W/m
230V/50Hz
75W
• Power Consumption
■ ASW-138
• RMS Power
• Max Power
50W
80W
• Impedence
6Ω
• Power Pressure Level
86dB/W/m
■ ST-20
• RMS Power
• Max Power
35W
70W
• Impedence
6Ω
• Power Pressure Level
86dB/W/m
※ Note : Specifications are subject to change without notice.
Component
■ ST-3103 : ASW-138 1Pcs, ST-20 5Pcs
■ ST-3108 : ASW-158 1Pcs, ST-20 5Pcs
4
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