Jvc SX-DW55 User Manual download pdf (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.

•

ON OFF

POWER

VOLUME

MAX MIN

Operations

PHASE

REVERSE

(LOW LEVEL)

RIGHT

MONO

LEFT

RIGHT LEFT

NORMAL

AUTO ON/

STANDBY

CANCEL

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

AUTO ON/

STANDBY

POWER

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

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

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.

–

•

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 × 481 × 430.5 mm

Mass : 17.3 kg

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

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Jvc SX-DW55 User Manual Page 2

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