JVC SX-DW55 - Manual (Page 2)

Turning On the Power—POWER A
Press the ON [ B ] portion of the POWER button.
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 On/ Standby places the unit into
standby mode.
To completely cut off the power to this unit
Press the OFF [ A ] portion of the POWER button.
This will disconnect the mains lead.
Adjusting the Volume—VOLUME B
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.
Turn the VOLUME knob to the MIN position.
Turn on the connected amplifier and start playing a source.
Playback sounds come out of the main (front) speakers and this unit.
Adjust the VOLUME knob to obtain a well-balanced sound level with that
of the main (front) speakers.
Caution
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.
Adjusting the Crossover Frequency
—CUT OFF FREQUENCY C
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.
Turn the CUT OFF 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.
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.
•
•
1.
2.
3.
•
•
•
ON OFF
POWER
VOLUME
MAX MIN
Operations
PHASE
REVERSE
(LOW LEVEL)
RIGHT
MONO
LEFT
RIGHT LEFT
RIGHT LEFT
NORMAL
AUTO ON/ STANDBY
CANCEL
ON
ON OFF
VOLUME
OUTPUT
POWER 200Hz 50Hz
CUT OFF FREQUENCY
MAX MIN
INPUT 2 (HIGH LEVEL)
INPUT 1 (LOW LEVEL)
PHASE
VOLUME
CUT OFF
FREQUENCY
B
C
D
AUTO ON/
STANDBY
POWER
A
E
FRONT
Power lamp
REAR
Changing the Phase—PHASE D
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
REVERSE
NORMAL
NORMAL : Normally select this.
REVERSE : Select this when you feel the bass sound is better with this mode
rather than with “NORMAL.”
Operating the Unit Automatically According to the Incoming Signals
—AUTO ON/STANDBY E
By using this function, this unit automatically enters standby mode even though the
POWER switch is turned ON [ B ].
Press the AUTO ON/STANDBY button to the A ON position.
AUTO ON/
STANDBY
CANCEL
ON
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 On/Standby does not work correctly (see “Memo” below), press out the
AUTO ON/STANDBY button to set it to the B CANCEL position. Auto On/Standby
is canceled.
AUTO ON/
STANDBY
CANCEL
ON
Memo
When the volume level of the amplifier is so low or the incoming signals are
so weak that this unit cannot detect sounds, Auto 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. •
•
•
•
•
Additional Information
Speaker layout
To obtain the best possible sound from your unit:
Place a subwoofer wherever you like since bass sound is nondirectional.
Normally place it in front of you.
Place all the main speakers at the same distance from the listening position.
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.
Center speaker
Front left
speaker
Powered
subwoofer
Surround left
speaker
Front right
speaker
Surround right
speaker
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.
–
–
–
o
•
•
Troubleshooting
Use this chart to help you solve daily operational problems. If there is any problem you cannot solve, contact your dealer.
Specifications
Symptom
Power does not come on.
Auto On/Standby does not function correctly.
No sound is heard.
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.
–
–
Possible Cause
Is the unit plugged 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.
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.
Action
Plug the AC power cord firmly into the AC outlet.
This is not a malfunction. If this happens, cancel
Auto 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.
Type : Powered Subwoofer
Bass-reflex type, (magnetically shielded type)
Speaker unit : 25.0 cm cone (× 1)
Frequency range : 25 Hz to 200 Hz
Input impedance : 50 kK (LOW LEVEL)
470 K (HIGH LEVEL)
Input terminals : INPUT 1 (LOW LEVEL)
INPUT 2 (HIGH LEVEL)
Power requirements : AC 230 V H, 50 Hz
Output power of built-in amp : 240 W (50 Hz, 4 K, 10 % THD)
Power consumption
: 60 W
Dimensions : (W/H/D) 254 Ч 481 Ч 430.5 mm
Mass : 17.3 k g
Accessories : Monaural audio cord (× 1)
If the item mentioned above is missing,
contact your dealer immediately.
Design and specifications subject to change without notice.
VOLUME
MAX MIN
200Hz 50Hz
CUT OFF
FREQUENCY
SX-DW55_57[B]_En_A3.indd 3 7/7/2005 1:55:33 PM