JBL ES250P (120V) User's Manual
Contents
1. Refer all servicing to gualified service personnel Servicing is reguired when the apparatus has been damaged in any way such as power supply cord or plug is damaged liquid has been spilled or objects have fallen into the apparatus or the apparatus has been exposed to rain or moisture does not operate normally or has been dropped 15 Do not expose this apparatus to dripping or splashing and ensure that no objects filled with liguids such as vases are placed on the apparatus 16 To completely disconnect this apparatus from the AC Mains disconnect the power supply cord plug from the AC receptacle 17 The mains plug of the power supply cord shall remain readily operable 18 Do not expose batteries to excessive heat such as sunshine fire or the like The lightning flash with arrowhead symbol within an eguilateral triangle is intended to alert the user to the presence of uninsulated dangerous voltage within the product s enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons The exclamation point within an eguilateral triangle is intended to alert the user to the presence of important operating and mainte nance servicing instructions in the literature accompanying the product WARNING To reduce the risk of fire or electric shock do not expose this apparatus to rain or moisture INTRODUCTION JBL ES150P ES250P Powered Subwoofers For more than 60 years JBL has been prov2. cord into a wall outlet Do not use the outlets on the back of the receiver Initially set the Subwoofer Level Control to the min position Turn on your sub by pressing the Power Switch on the rear panel Turn on your entire audio system and start a CD or movie soundtrack at a moderate level Auto On Standby With the Power Switch in the ON position the Status LED on the top will remain lit in red or green to indicate the On Standby mode of the subwoofer RED STANDBY No signal detected Amp Off GREEN ON Signal detected Amp On The subwoofer will automatically enter the Standby mode after approximately 10 minutes when no signal is detected from your system The subwoofer will then power ON instantly when a signal is detected During periods of normal use the Power Switch can be left on You may turn off the Power Switch O for extended periods of nonoperation e g when you are away on vacation Adjust Gain Turn your Subwoofer Level Control up to the halfway position If no sound emanates from the subwoofer check the AC line cord and input cables Are the connectors on the cables making proper contact Is the AC plug connected to a live receptacle Has the Power Switch been pressed to the On position Once you have confirmed that the subwoofer is active proceed by playing a CD record or cassette Use a selection that has ample bass information Set the overall volume control of the preamp
3. sounds reguired by today s films and music If you are using smaller bookshelf speakers that do not extend to the lower bass freguencies set the Crossover Adjustment control to a higher setting between 120Hz and 150Hz NOTE This control will have no effect if the LFE Normal Selector is set to LFE If you have a Dolby Digital or DTS processor receiver the Low Pass Freguency is set by the processor receiver Consult your owner s manual to learn how to view or change this setting MAINTENANCE AND SERVICE The enclosure may be cleaned using a soft cloth to remove fingerprints or to wipe off dust The grille may be gently vacuumed Stains may be removed with an aerosol cleaner following its instructions Do not use any solvents on the grille All wiring connections should be inspected and cleaned or remade periodically The freguency of maintenance depends on the metals involved in the connections atmospheric conditions and other factors but once per year is the minimum If a problem occurs make sure that all connections are properly made and clean If a problem exists in one loudspeaker reverse the connection wires to the left and right system If the problem remains in the same speaker then the fault is with the loudspeaker If the problem appears in the opposite speaker the cause is in another component or cable In the event that your subwoofer ever needs service contact your local JBL dealer or visit www jbl com for a servic
4. HOC ELECTRIQUE NE PAS OUVRIR WARNING TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE AVERTISSEMENT POUR PREVENIR LES RISQUES D INCENDIE OU DE CHOC ELECTRIQUE EVITER D EXPOSER CET APPAREIL ALA PLUIE OU A L HUMIDITE O O O Phase TO 19 1 Input LFE O Normal 2 O Crossover lt LFE Input Line In G CSAC22 2 1 98 UL 1492 AC 120V 60Hz 2A O Phase Switch O LFE Normal Selector O Subwoofer Level Control O Crossover Adjustment O Line Level LFE Input O Power Switch SYSTEM CONNECTIONS If you have a Dolby Digital or DTS receiver processor with a low freguency effects LFE or subwoofer output a SUBWOOFER OR LFE OUTPUT Phase O 10 Input LFE O Normal Level Min Max O Crossover Hz Set LFE Normal switch to LFE EJ JBL Incorporated A Harman International Company If your receiver processor does not contain a Dolby Digital or DTS processor but has subwoofer outputs RECEIVER PROCESSOR SUB OUT K Crossover Hz Set line level LFE switch to Normal JBL Incorporated H A Harman International Company This area is designed to become quite warm during normal operation NOTE If your receiver processor has only one sub out you may use either the L or R input OPERATION Power On Plug your subwoofer s AC
5. JBL ES SERIES ES150P ES250P 120V OWNER S GUIDE IMPORTANT SAFETY INSTRUCTIONS 1 Read these instructions 2 Keep these instructions 3 Heed all warnings 4 Follow all instructions 5 Do not use this apparatus near water 6 Clean only with a dry cloth 7 Do not block any ventilation openings Install in accordance with the manufacturer s instructions 8 Do not install near any heat sources such as radiators heat registers stoves or other apparatus including amplifiers that produce heat 9 Do not defeat the safety purpose of the polarized or grounding type plug A polarized plug has two blades with one wider than the other A grounding type plug has two blades and a third grounding prong The wide blade or the third prong is provided for your safety If the provided plug does not fit into your outlet consult an electrician for replacement of the obsolete outlet 10 Protect the power cord from being walked on or pinched particularly at plugs convenience receptacles and the point where they exit from the apparatus 11 Only use attachments accessories specified by the manufacturer 12 Use only with the cart stand tripod bracket or table specified by the manufacturer or sold with the apparatus When a cart is used use caution when moving the cart apparatus combination to avoid injury from tip over 13 Unplug this apparatus during lightning storms or when unused for long periods of time 14
6. e center near you SPECIFICATIONS Freguency Response Amplifier RMS Power Amplifier Peak Dynamic Powert Crossover Freguency Driver Dimensions H x W x D with grille Weight 27Hz 150Hz 300 Watts 500 Watts 50Hz 150Hz 24dB octave continuously variable 10 250mm PolyPlas 18 x 13 1 4 x 15 1 4 457mm x 337mm x 387mm 39 Ib 17 7kg t The Peak Dynamic Power is measured by recording the highest center to peak voltage measured across the output of a resistive load equal to minimum impedance of the transducer using a 50Hz sine wave burst 3 cycles on 17 cycles off ES250P 25Hz 150Hz 400 Watts 700 Watts 50Hz 150Hz 24dB octave continuously variable 12 300mm PolyPlas 19 3 4 x 15 3 4 x 16 7 8 502mm x 400mm x 428mm 43 Ib 19 5kg Features specifications and appearance are subject to change without notice JBL is a trademark of Harman International Industries Incorporated registered in the United States and or other countries Elliptical Oblate Spheroidal PolyPlas and Pro Sound Comes Home are trademarks of Harman International Industries Incorporated Dolby is a registered trademark of Dolby Laboratories DTS is a registered trademark of DTS Inc HIM PRO SOUND COMES HOME Harman Consumer Group Inc 250 Crossways Park Drive Woodbury NY 11797 USA 8500 Balboa Boulevard Northridge CA 91329 USA www jbl com O 2007 Harman International Industries Incorpo
7. iding audio eguipment to concert halls recording studios and movie theaters around the world and has become the hands down choice of leading recording artists and sound engineers With the JBL ES Series innovative technologies such as titanium laminate dome tweeters Elliptical Oblate Spheroidal EOS waveguides and PolyPlas transducer reinforcement are available to you Enjoy Unpacking the Subwoofer If you suspect damage from transit report it immediately to your dealer Keep the shipping carton and packing materials for future use PLACEMENT Since the installation of a subwoofer can be somewhat more complicated than installation of full range speakers it is essential that you read this section very carefully prior to connecting the subwoofer to your system Should you have questions relating to your installation it is advisable to call your dealer or distributor for advice The performance of the subwoofer is directly related to its placement in the listening room and how you align the subwoofer with its satellite speakers Setting the volume of the subwoofer in relationship to the left and right speakers is also of critical importance because it is essential that the subwoofer integrate smoothly with the entire system Setting the subwoofer s volume level too high will result in overpowering boomy bass Setting the volume level too low will negate the benefits of the subwoofer Here are several additional facts on instal
8. lation that may prove useful It is generally believed by most audio authorities that low frequencies below 125Hz are nondirectional and therefore placement of a subwoofer within any listening room is not critical While in theory it is true that the larger wave lengths of extremely low frequencies are basically nondirectional the fact is that when installing a subwoofer within the limited confines of a room reflections standing waves and absorptions generated within the room will strongly influence the performance of any subwoofer system As a result specific location of the subwoofer becomes important and we strongly recom mend that you experiment with placement before choosing a final location Placement will depend upon your room and the amount and quality of bass required for example whether or not your room permits placement of the subwoofer near either satellite lt I SUB 3 RIGHT CHANNEL SPEAKER PRIMARY LISTENING AREA Figure 1 This example shows the subwoofer positioned behind the right channel satellite speaker to re create the actual location of bass instruments in an orchestra and or add impact to movie soundtracks CONTROLS AND CONNECTIONS Rear Panel JBL JBL Incorporated H A Harman International Company This area is designedto become guite warm during normal operation CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN AVIS RISQUE DE C
9. lifier or stereo to a comfortable level Adjust the Subwoofer Level Control until you obtain a pleasing blend of bass Bass response should not overpower the room but rather be adjusted so there is a harmonious blend across the entire musical range Many users have a tendency to set the subwoofer volume too loud adhering to the belief that a subwoofer is there to produce lots of bass This is not entirely true A subwoofer is there to enhance bass extending the response of the entire system so the bass can be felt as well as heard However overall balance must be maintained or the music will not sound natural An experienced listener will set the volume of the subwoofer so its impact on bass response is always there but never obtrusive Phase Control The Phase Switch D determines whether the subwoofer speaker s pistonlike action moves in and out with the main speakers 0 or opposite the main speakers 180 Proper phase adjustment depends on several variables such as room size subwoofer placement and listener position Adjust the phase switch to maximize bass output at the listening position Crossover Adjustment The Crossover Adjustment Control determines the highest freguency at which the subwoofer reproduces sounds If your main speakers can comfortably reproduce some low freguency sounds set this control to a lower freguency setting between 50Hz and 100Hz This will concentrate the subwoofer s efforts on the ultradeep bass
10. rated All rights reserved Part No 406 000 05611 E H A Harman International Company
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