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SX-DW303
POWERED SUBWOOFER
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.
 2003 VICTOR COMPANY OF JAPAN, LIMITED
INSTRUCTIONS
0503NSMMDWJSC EN
LVT0951-007A [UJ]
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: 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.
Front view
15 cm 20 cm 15 cm
20 cm
Warnings
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.
Side view
Caution�POWER switch
This apparatus is provided with the POWER switch to minimize power consumption for safe use. Therefore, 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 [ � ]. 2. When not in use, set the POWER switch to OFF [ � ]. This disconnects the mains line.
20 cm
Front
� This unit is magnetically shielded to avoid color distortions on TVs. However, if not installed properly, it may cause color distortions. So, pay attention to the following when installing the unit. � When placing this unit near a TV set, turn off the TV�s main power switch or unplug it before installing this unit. Then wait at least 30 minutes before turning on the TV�s main power switch again. Some TVs may still be affected even though you have followed the above. If this happens, move this unit away from the TV. � 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.
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.
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. � When discarding batteries, environmental problems must be considered and local rules or laws governing the disposal of these batteries must be followed strictly. � 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.
10 cm
Precautions for installation
� 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.
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. � Monaural audio cord (1) � AC plug adaptor (1)
If the item mentioned above is missing, contact your dealer immediately.
Connections
Checking and Connecting to Your Amplifier
Before connecting this unit to your amplifier (or receiver), check what types of connecting terminals your amplifier has. Follow the instructions below to find a proper connection method for your equipment. � Illustrations of jacks and terminals in this manual may be different from the ones actually used for your amplifier. The illustrations are of the most used type. � When connecting to your amplifier (or receiver), refer also the manual supplied for your equipment. Before connecting this unit to the amplifier (or receiver), observe the following carefully. � Before connecting this unit to an amplifier, turn off the amplifier first. � Make all connections before plugging in this unit. � DO NOT use the INPUT 1 (LOW-LEVEL) and INPUT 2 (HIGH-LEVEL) terminals on the rear of this unit at the same time; otherwise, noise will be heard and may damage the unit. � DO NOT connect this unit to the REC OUT jacks of your amplifier.
First check whether your amplifier has a subwoofer output jack. It is usually named and printed as the �SUBWOOFER OUT� or �SUBWOOFER.� If you find it on your amplifier, follow Connecting Method �.
Next check whether your amplifier has line output jacks. They are usually named and printed as �LINE OUT� or �LINE OUTPUT.� If you find them on your amplifier, follow Connecting Method ı.
LINE OUT
Follow Connecting Method �. This connection can be used for any amplifier, by connecting the front speaker terminals of the amplifier (usually named and printed as �FRONT SPEAKERS� or �MAIN SPEAKERS�).
FRONT SPEAKERS
SUBWOOFER OUT
If you cannot find any
L R
If you cannot find any
RIGHT LEFT
If you find it
If you find them
Connect an amplifier without a subwoofer output jack and line output jacks to the INPUT 2 (HIGH-LEVEL) terminal.
Connecting Method �
Connect an amplifier having a subwoofer output jack to the LEFT/ MONO jack of the INPUT 1 (LOW-LEVEL) terminal. Preparation: Use the supplied monaural audio cord.
Connecting Method �
Connect an amplifier having line output jacks to the INPUT 1 (LOWLEVEL) terminal. Preparation: Purchase a stereo audio cord at an audio shop or electric shop.
Connecting Method ı
Preparation: Purchase speaker cords at an audio shop or electric shop. How to connect the speaker cords:
1 Press and hold the clamp of the speaker terminal. 2 Insert the end of the speaker cord into the terminal. � Match the polarity of the speaker terminals: ª to ª and · to ·.
FRONT SPEAKERS
Main (Front) Speakers (not supplied)
Main (Front) Speakers (not supplied)
LINE OUT
RIGHT LEFT
SUBWOOFER OUT
L
Your Amplifier
R
VOLUME
MIN
FREQUENCY
Speaker cords (not supplied)
VARIABLE FIXED
50Hz
MAX
200Hz PHASE
NORMAL REVERSE
CUT OFF FILTER
Your Amplifier Monaural audio cord (supplied)
VOLUME
MIN
Your Amplifier Stereo audio cord (not supplied)
AUTO POWER ON/STANDBY
ON CANCEL
RIGHT
LEFT/MONO
LEFT
RIGHT
(LOW-LEVEL) INPUT 1
INPUT 2 (HIGH-LEVEL)
RIGHT
LEFT
INPUT 2 (HIGH-LEVEL) TO MAIN SPEAKERS
RIGHT LEFT
FREQUENCY
50Hz
MIN
VOLUME
FREQUENCY
50Hz
MAX
200Hz
MAX
POWER
200Hz
OFF ON
PHASE
NORMAL REVERSE
CUT OFF FILTER
VARIABLE FIXED
PHASE
NORMAL REVERSE
CUT OFF FILTER
VARIABLE FIXED
TO MAIN SPEAKERS
AUTO POWER ON/STANDBY
RIGHT
ON CANCEL
AUTO POWER ON/STANDBY
LEFT/MONO
RIGHT LEFT/MONO
(LOW-LEVEL) INPUT 1
ON
RIGHT
RIGHT LEFT
LEFT/MONO
CANCEL
(LOW-LEVEL) INPUT 1
RIGHT
LEFT/MONO
SX-DW303
RIGHT LEFT
INPUT 2 (HIGH-LEVEL)
TO MAIN SPEAKERS
RIGHT LEFT
INPUT 1 (LOW-LEVEL)
RIGHT LEFT
INPUT 2 (HIGH-LEVEL)
INPUT 1 (LOW-LEVEL)
To an AC outlet
RIGHT
LEFT
TO MAIN SPEAKERS
POWER
POWER
OFF ON
OFF ON
Speaker cords (not supplied) To an AC outlet Main (Front) Speakers (not supplied) Right speaker
SX-DW303
To an AC outlet
SX-DW303
Left speaker
When using Connecting Method �, no signal comes out of the TO MAIN SPEAKERS terminal.
If your amplifier has only a monaural line output (MONO) jack, connect it to the LEFT/MONO jack of the INPUT 1 (LOWLEVEL) terminal (see Connecting Method �).
� When you connect main (front) speakers to the TO MAIN SPEAKERS terminal, use the speakers within the impedance range indicated by the amplifier connected to the INPUT 2 (HIGH-LEVEL) terminal. If not, the amplifier connected to the INPUT 2 (HIGHLEVEL) terminal may malfunction and be damaged. � DO NOT connect more than one speaker to one speaker terminal.
