JVC SX-DW303 User's Manual
Contents
1. JVL POWERED SUBWOOFER SX DW303 INSTRUCTIONS 2003 VICTOR COMPANY OF JAPAN LIMITED LVT0951 007A UJ 0503NSMMDWJSC EN 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 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 E 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 1 2 When not in use set the POWER switch to OFF o This disconnects the mains line E Cautions e 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 e Do not place any naked flame sources such as lighted candles on the apparatus e When discarding batteries environmental problems must be considered and local rules or laws governing the disposal of these batteries must be followed strictly e Do not expose this apparatus to rain moisture dripping or splashing and that no objects filled with liquids such as vases2. shall be placed on the apparatus W 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 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 3 Bottom Side view z 7 rau Front COSMOS ln W Precautions for installation e 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 e Speaker vibrations may cause howling Place the unit as far away from the player as possible e Take the occurrence of earthquakes or other physical shocks into consideration when selecting the installation place and secure the unit thoroughly e 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
3. e Match the polarity of the speaker terminals to and to FRONT SPEAKERS Speaker cords not supplied SX DW303 To an AC RIGHT outlet Speaker cords not supplied Main Front Speakers not supplied Right speaker gt cavon e 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 HIGH LEVEL terminal may malfunction and be damaged e DO NOT connect more than one speaker to one speaker terminal Left speaker Operations Front view 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 Turning On the Power POWER Press the ON I portion of the POWER switch The main power turns on and the power lamp in the front panel lights in green e The power lamp lights in red when the Auto Power On Standby places the W if your amplifier is not provided with a crossover frequency setting 1 Press out the CUT OFF FILTER button to set it to the H 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
4. 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 B If you find them i Connecting Method Connect an amplifier having line output jacks to the INPUT 1 LOW LEVEL terminal Preparation Purchase a stereo audio cord at an audio shop or electric shop Main Front Speakers not supplied LINE OUT 3 9 QQ Stereo audio cord not supplied LEFT MONO 6 LOW LEVEL gt To an AC outlet SX DW303 If your amplifier has only a monaural line output MONO jack connect it to the LEFT MONO jack of the INPUT 1 LOW LEVEL terminal see Connecting Method A If you cannot find any Follow Connecting Method c 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 E Connecting Method Connect an amplifier without a subwoofer output jack and line output jacks to the INPUT 2 HIGH LEVEL terminal 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
5. in front speakers and this unit 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 1 3 Adjust the VOLUME knob to obtain a well VOLUME poland sound level with that of the main mn Press the AUTO POWER ON STANDBY AUTO POWER ON STANDBY front speakers Q button to the H ON position MAX E ON CANCEL 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 HOHE l FREQUENCY PHASE CUT OFF FILTER NORMAL D Hau Aam AUTO POWER ON STANDBY If Auto Power On Standby does not work AUTO POWER ON STANDBY PHASE ce 5 E RIGHT LEFT MONO CUT OFF correctly see MEMO below press out the 7 wif FILTER Adjusting the Crossover Frequency AUTO POWER ON STANDBY button to set itto y oy AUTO POWER CUT OFF FILTER and FREQUENCY the CANCEL position Auto Power On CANCEL ON STANDBY Standby is canceled EE hee You can adjust the crossover frequency to determine the bass sound level th
6. is unit handles e Once it is set only the sounds below the frequency come out of the built in speaker E 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 SPEAKERS 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 e This unit may enter standby mode even though signals are coming in e This unit may not start operating after entering standby mode even though signals start coming in CUT OFF FILTER VARIABLE wm FIX e The FREQUENCY knob is deactivated e When your amplifier is equipped with crossover frequency setting set it within the range of 100 Hz to 150 Hz e 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 Possible Cause Action Power does not come on Is the unit pugged in Plug the AC power cord firmly into the AC outlet This is
7. main speakers ma unit into standby mode Adjust the frequency 50 Hz to 200 Hz while i ower oN listening to playback sound coming out of both off the main speakers and this unit To completely cut off the power to If your main speakers can reproduce the bass sound well 7 eee P adjust the frequency at a lower level H h an O portion of the 0 e If you feel bass sounds are not sufficient adjust the frequency witch N at a higher level This will disconnect the mains lead power i i 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 Adjusting the Volume VOLUME Adjust the volume output level through this unit while comparing with the sounds coming out of the main front speakers e 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 Press in or out the PHASE button to select either HAS pL NORMAL the NORMAL position or the REVERSE position C 2 keiss e NORMAL Normally select this e REVERSE Select this when you feel the bass sound is better 1 Turn the VOLUME knob to the MIN position en ie redee na Cain VOLUME MIN MAX O 2 Turn on the connected amplifier and start playing a source Playback sounds come out of the ma
8. may be different from the ones actually used for your amplifier The illustrations are of the most used type e When connecting to your amplifier or receiver refer also the manual supplied for your equipment 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 A find any If you find it E 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 Main Front Speakers not supplied Monaural audio cord Supplied LEFT MONO INPUT 1 6 LOW LEVEL gt To an AC outlet SX DW303 When using Connecting Method A no signal comes out of the TO MAIN SPEAKERS terminal If you cannot Before connecting this unit to the amplifier or receiver observe the following carefully e Before connecting this unit to an amplifier turn off the amplifier first e Make all connections before plugging in this unit e 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 e DO NOT connect this unit to the REC OUT jacks of your amplifier Next check whether your
9. not a malfunction If this happens cancel Auto Power On Standby Turn the VOLUME knob until a suitable volume is found Signals are too weak or volume level is too low Is the VOLUME knob turned to the MIN position Auto Power On Standby does not function correctly No sound is heard Right front speaker Check the connections If incorrect redo the corrections Connections are incorrect or loose Audio signals through the amplifier are extremely weak Increase the volume level on the amplifier Lower the volume level on the amplifier so that the symptom will not occur The built in protective circuit is working The VOLUME knob on the rear is set to a very high level Sounds fluctuate suddenly become loud or soft Turn down the volume then turn off and on this unit Suddenly no sound comes out the power lamp lights in red Turn down the volume of the playback source turn off and on the source then adjust the volume properly on the source The volume of the playback source is too high Suddenly no sound comes out the power lamp still lights in green Listening position Specifications Powered Subwoofer Bass reflex type magnetically shielded type 16 0 cm cone x 1 30 Hz to 200 Hz 50 KQ LOW LEVEL 470 Q HIGH LEVEL INPUT 1 LOW LEVEL INPUT 2 HIGH LEVEL gt AC 110 V 240 V v 50 Hz 60 Hz 100 W 45 Hz 4 Q 10 THD Type Speaker unit Frequency range Inpu
10. t impedance Input terminals Power requirements Output power of built in amp Power consumption 27 W Dimensions 217 mm width x 393 mm height x 376 mm depth Mass 9 2 kg Accessories Monaural audio cord x 1 AC plug adaptor x 1
11. the above If this happens move this unit away from the TV e 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 W Precautions for Daily Use e 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 e 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 W 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 e Monaural audio cord 1 e AC plug adaptor 1 If the item mentioned above is missing contact your dealer immediately an hf nh ro 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
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