COMPACT COMPONENT SYSTEM
POWERED SUBWOOFER
SP-DWF31
INSTRUCTIONS
LVT1305-001A
[B]
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Thank you for purchasing a JVC speaker.
Before you begin using it, please read the instructions carefully to be sure you get the best possible performance. If you have any
questions, consult your JVC dealer.
Precautions for installation
Warnings, Cautions and Others
To reduce the risk of electrical shocks, fire, etc.:
1. Do not remove screws, covers or cabinet.
2. Do not expose this appliance to rain or moisture.
• To prevent deformation or discoloration of the cabinet, do not
install the unit where it is exposed to direct sunlight or high
humidity, and avoid installation near air conditioning outlets.
• Speaker vibrations may cause howling. Place the unit as far
away from the player as possible.
• Take the occurrence of earthquakes or other physical shocks
into consideration when selecting the installation place, and
secure the unit thoroughly.
Caution—POWER switch
This apparatus is provided with the POWER switch to minimize
power consumption for safe use. Therefore,
• Tuner reception may become noisy or hissing if this unit is
installed nearby the tuner. In this case, leave a more distance
between the tuner and this unit or use an outdoor antenna for
better tuner reception without interference from this unit.
1. Before doing initial settings, complete all the connections
required, connect the mains plug into the wall outlet, then set
the POWER switch to ON position.
2. When not in use, set the POWER switch to OFF position.
This disconnects the mains line.
• The speakers are magnetically shielded to avoid color
distortions on TVs. However, if not installed properly, they may
cause color distortions. So, pay attention to the following when
installing the speakers.
– When placing the speakers near a TV set, turn off the TV’s
main power switch or unplug it before installing the speakers.
Then wait at least 30 minutes before turning on the TV’s
main power switch again.
Cautions
• Do not block the ventilation openings or holes.
(If the ventilation openings or holes are blocked by a
newspaper or cloth, etc., the heat may not be able to get out.)
• Do not place any naked flame sources, such as lighted candles,
on the apparatus.
Some TVs may still be affected even though you have followed
the above. If this happens, move the speakers away from the
TV.
• When discarding batteries, environmental problems must be
considered and local rules or laws governing the disposal of
these batteries must be followed strictly.
• When the TV screen shakes, move this unit away from the TV to
find a position where the screen doesn't shake and then set the
unit there.
• Do not expose this apparatus to rain, moisture, dripping or
splashing and that no objects filled with liquids, such as vases,
shall be placed on the apparatus.
Precautions for Daily Use
• To maintain the appearance of the unit
Wipe with a dry, soft cloth if the cabinet or control panel should
become dirty.
If very dirty, apply a small amount of water or neutral detergent
to the cloth and wipe clean. Then wipe with a dry cloth.
• To improve the sound field
If the speakers are facing a solid wall or glass door, etc., it is
recommended to furnish the wall with materials that absorb
sounds, for example by hanging up thick curtains, to prevent
reflections and standing waves.
Caution—Proper Ventilation
To avoid risk of electric shock and fire, and to prevent damage,
locate the apparatus as follows:
1 Front:
No obstructions and open spacing.
2 Sides/ Top/ Back:
No obstructions should be placed in the areas shown by the
dimensions below.
3 Bottom:
Checking the Supplied Accessories
Check to be sure you have the following supplied accessories.
The number in parenthesis indicates the quantity of the piece
supplied.
Place on the level surface. Maintain an adequate air path for
ventilation by placing on a stand with a height of 10 cm or
more.
• Monaural audio cord (1)
If the item mentioned above is missing, contact your dealer
immediately.
Front
Front view
Side view
20 cm
20 cm
20 cm
15 cm
15 cm
Contents
Warnings, Cautions and Others................................... 3
Connections .................................................................. 4
Operations ..................................................................... 4
Additional Information .................................................. 5
10 cm
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Connections
Before connecting this unit to the amplifier (or receiver), observe
the following carefully.
• Turn off the amplifier.
• Make all connections before plugging in this unit.
• DO NOT connect this unit to the REC OUT jacks of your
amplifier. It may damage your subwoofer.
Monaural audio cord (Supplied)
Amplifier or Receiver
To SUBWOOFER OUT
or MONO
To LINE OUT
To an AC outlet
Stereo audio cord (not Supplied)
In the case that the receiver dose not have the SUBWOOFER OUT or MONO terminal.
Operations
Turning On the Power—POWER
To turn on the power.
Press the POWER switch to the ON position.
• The power lamp lights in green.
Front
SP-DWF10
To cut of the power.
Press the POWER switch to the OFF position.
• The power lamp goes out.
• This will disconnect the mains lead.
SP-DWF10
Power lamp
Operating the Unit Automatically According to the Incoming
Signals—AUTO POWER ON/STANDBY
To activate AUTO POWER ON/STANDBY.
Rear
Press the AUTO POWER ON/STANDBY switch to the [ ] ON
position.
• If no sound comes in for 5-10 minutes, the unit enters
standby mode. The power lamp lights in red.
• If the unit detects incoming signals, the unit starts
operating. The power lamp lights in green.
To cancel AUTO POWER ON/STANDBY.
Press out the AUTO POWER ON/STANDBY switch to set it to the
[
] CANCEL position.
AUTO POWER ON / STANDBY
CANCEL
ON
When the volume level of the amplifier is so low or the
incoming signals are so weak that this unit cannot detect
sounds, Auto Power On/Standby may not work correctly.
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Additional Information
Speaker layout
Center speaker
To obtain the best possible sound from your unit:
Front left
speaker
Front right
speaker
—Place a subwoofer wherever you like since bass sound is non-
directional. Normally place it in front of you.
—Place all the main speakers at the same distance from the
listening position.
Powered
subwoofer
—Be sure to place the powered subwoofer to the TV's right. If you
place the powered subwoofer to the TV's left, keep sufficient
distance between them to prevent the TV from appearing
mottled.
Surround left
speaker
Surround right
speaker
Troubleshooting
Use this chart to help you solve daily operational problems. If there is any problem you cannot solve, contact your dealer.
Power does not come on.
• Is the unit pugged in?
– Plug the AC power cord firmly into the AC outlet.
Auto Power On/Standby does not function correctly.
• Signals are too weak or volume level is too low.
– This is not a malfunction. If this happens, cancel Auto Power On/Standby.
No sound is heard.
• Connections are incorrect, or loose.
– Check the connections. If incorrect, redo the connections. (See pages 4.)
• Audio signals through the amplifier are extremely weak.
– Increase the volume level on the amplifier.
Sounds fluctuate (suddenly become loud or soft).
• The built-in protective circuit is working.
– Lower the volume level, then turn off and on the unit.
Suddenly no sound comes out. – the power lamp still lights in green.
• The volume of the playback source is too high.
– Turn down the volume of the playback source, turn off and on the source, then adjust the volume properly on the source.
Specifications
Type : Powered Subwoofer
Bass-reflex type
(magnetically shielded type)
Speaker : 16.0 cm cone × 1
Frequency Range : 32 Hz
Impedance : 4 Ω
200 Hz
Input terminals : INPUT (LOW-LEVEL)
Power requirements : AC 230 V , 50 Hz
Output power of built-in amp : 100 W (50 Hz, 4 Ω, 10 % THD)
Power Handling Capacity : 27 W
Dimensions
(W × H × D) : 184 mm × 374 mm × 354 mm
Mass : 8.2 kg
Accessories : Monaural audio cord (× 1)
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EN
1204NSMCREJSC
© 2005 Victor Company of Japan, Limited
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