JVC SX-DW303
Manual de Usuario

Operations
Front view Power lamp
The unit automatically accommodates AC power between 110V and 240V. You do not need any setting to match the unit with your local power voltage.

If your amplifier is not provided with a crossover frequency setting:

1 Press out the CUT OFF FILTER button to set it
Turning On the Power�POWER �
Press the ON [ � ] portion of the POWER switch. The main power turns on and the power lamp in the front panel lights in green. � The power lamp lights in red when the Auto Power On/Standby places the unit into standby mode. to the � VARIABLE position. Now the FREQUENCY knob is activated and you can adjust the crossover frequency on this unit.

CUT OFF FILTER
VARIABLE FIX

2 Turn the FREQUENCY knob to obtain the
best matching crossover frequency with your main speakers. Adjust the frequency (50 Hz to 200 Hz) while listening to playback sound coming out of both the main speakers and this unit.
FREQUENCY
50Hz

200Hz

To completely cut off the power to this unit Press the OFF [ � ] portion of the POWER switch. This will disconnect the mains lead.

� If your main speakers can reproduce the bass sound well, adjust the frequency at a lower level. � If you feel bass sounds are not sufficient, adjust the frequency at a higher level.

Changing the Phase�PHASE � Adjusting the Volume�VOLUME ı

Rear view

Adjust the volume output level through this unit while comparing with the sounds coming out of the main (front) speakers. � Once you have adjusted the volume output level of this unit, you do not need to adjust it each time you use this unit. Adjusting the volume level on the connected amplifier will also adjust the volume level through this unit.

You can change the sound phase to match your preference. Select either �NORMAL� or �REVERSE� to obtain a better bass sound. Press in or out the PHASE button to select either the NORMAL position or the REVERSE position.
PHASE
NORMAL REVERSE

1 Turn the VOLUME knob to the MIN position.
MIN MAX

VOLUME

� NORMAL : Normally select this. � REVERSE : Select this when you feel the bass sound is better with this mode rather than with �NORMAL.�

2 Turn on the connected amplifier and start playing a source. 3 Adjust the VOLUME knob to obtain a wellbalanced sound level with that of the main (front) speakers.
VOLUME
MIN

Operating the Unit Automatically According to the Incoming Signals�AUTO POWER ON/STANDBY �
By using this function, this unit automatically enters standby mode even though the POWER switch is turned ON [ � ]. Press the AUTO POWER ON/STANDBY button to the � ON position.
AUTO POWER ON / STANDBY

Playback sounds come out of the main (front) speakers and this unit.

MAX

ON CANCEL

VOLUME

FREQUENCY

ı
VOLUME

MIN

50Hz

�
FREQUENCY
CUT OFF FILTER
VARIABLE FIXED

MAX

200Hz PHASE

�
PHASE

REVERSE NORMAL

If the volume is set at a high level before starting play, the sudden blast of sound energy can permanently damage your hearing and/or ruin your speakers.

� If no sound comes in for about 10 minutes, the unit automatically enters standby mode. The power lamp lights in red. Then if the unit detects incoming signals, this unit starts operating automatically (the power lamp now lights in green). If Auto Power On/Standby does not work correctly (see �MEMO� below), press out the AUTO POWER ON/STANDBY button to set it to the _ CANCEL position. Auto Power On/ Standby is canceled.
AUTO POWER ON / STANDBY
ON CANCEL

AUTO POWER ON/STANDBY
ON CANCEL

�
LEFT/MONO

RIGHT

�
AUTO POWER ON/STANDBY

INPUT 1 (LOW-LEVEL)
LEFT

CUT OFF FILTER

RIGHT

Adjusting the Crossover Frequency �CUT OFF FILTER and FREQUENCY �
You can adjust the crossover frequency to determine the bass sound level this unit handles. � Once it is set, only the sounds below the frequency come out of the built-in speaker.

INPUT 2 (HIGH-LEVEL)

TO MAIN SPEAKERS
RIGHT LEFT

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. � This unit may enter standby mode even though signals are coming in. � This unit may not start operating after entering standby mode, even though signals start coming in.

�
POWER

POWER
OFF ON

When the main speakers in use are JVC�s SP-X103, SP-F303 or SX-XD33
Press in the CUT OFF FILTER button to set it to the _ FIX position.
CUT OFF FILTER
VARIABLE FIX

� The FREQUENCY knob is deactivated. � When your amplifier is equipped with crossover frequency setting, set it within the range of 100 Hz to 150 Hz. � When your amplifier is equipped with speaker size setting, select �small.�

Additional Information
Speaker layout
To obtain the best possible sound from your unit: �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.

Troubleshooting
Use this chart to help you solve daily operational problems. If there is any problem you cannot solve, contact your dealer.

Symptom
Power does not come on. Auto Power On/Standby does not function correctly. No sound is heard.

Possible Cause
Is the unit pugged in? Signals are too weak or volume level is too low. Is the VOLUME knob turned to the MIN position? Connections are incorrect, or loose. Audio signals through the amplifier are extremely weak.

Action
Plug the AC power cord firmly into the AC outlet. This is not a malfunction. If this happens, cancel Auto Power On/Standby. Turn the VOLUME knob until a suitable volume is found. Check the connections. If incorrect, redo the corrections. Increase the volume level on the amplifier. Lower the volume level on the amplifier so that the symptom will not occur. Turn down the volume, then turn off and on this unit. Turn down the volume of the playback source, turn off and on the source, then adjust the volume properly on the source.

Left front speaker Center speaker

Right front speaker

Subwoofer

Sounds fluctuate (suddenly become loud or soft). Suddenly no sound comes out. �the power lamp lights in red. Suddenly no sound comes out. �the power lamp still lights in green.

The built-in protective circuit is working. The VOLUME knob on the rear is set to a very high level. The volume of the playback source is too high.

Listening position

Specifications
Left surround speaker Right surround speaker
Type : Powered Subwoofer Bass-reflex type, (magnetically shielded type) Speaker unit : 16.0 cm cone (� 1) Frequency range Input impedance Input terminals Power requirements Output power of built-in amp Power consumption Dimensions Mass Accessories : : : : : : : : : 30 Hz to 200 Hz 50 k� (LOW-LEVEL), 470 � (HIGH-LEVEL) INPUT 1 (LOW-LEVEL), INPUT 2 (HIGH-LEVEL) AC 110 V�240 V , 50 Hz/60 Hz 100 W (45 Hz, 4 �, 10 % THD) 27 W 217 mm (width) � 393 mm (height) � 376 mm (depth) 9.2 kg Monaural audio cord (� 1), AC plug adaptor (� 1)