Infinity Entra Sub Subwoofer
Contents
1. Infinity ENTRA SUB Owner s Guide Pi PrP pp Ci ENTRA SUB CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN WARNING SHOCK HAZARD DO NOT OPEN AVIS RISQUE DE CHOC ELECTRIQUE NE PAS OUVRIR CUIDADO PELIGRO DE CHOQUE ELECTRICO NO ABRIR CAUTION TO REDUCE THE RISK OF ELECTRIC SHOCK DO NOT REMOVE COVER 0R BACK NO USER SERVICEABLE PARTS INSIDE REFER SERVICING TO QUALIFIED PERSONNEL THIS INFINITY PRODUCT ISDESIGNED FOR 120 VOLT USE ONLY FOR DETAILED SAFETY PRECAUTIONS PLEASE SEE FOLLOWING PAGE IN THIS OWNER S MANUAL FOR IMPORTANT SAFETY INSTRUCTIONS The lightning flash with arrowhead symbol within an equilateral triangle is intended to alert the user to the presence of uninsulated dangerous voltage within the products enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and maintenance servicing instructions in the literature accompanying the product L clair avec le symbole de la fl che plac dans les limites d un triangel quilat ral est pr vu pour avertir l utilisateur de la pr sence de tension dangereuse non isol e dans l enceinte du produit qui pourrait tre d une importance suffisante pour pr senter un risque d lectrocution aux personnes Le point d exclamation dans un triangel quilate2. Plug your subwoofer s AC cord into a wall outlet Do not use the outlets on the back of the receiver Initially set the subwoofer s Level control to the 0 position Turn on your sub by pressing the Power button on the rear panel Turn on your entire audio system and start a CD or movie sound track at a moderate level Important Note The Entra Sub includes an Auto On Auto Off ircuit During periods of normal use the power switch should ways be left on It should only be turned off during extended periods of nonoperation e g when you are away on vacation C a Adjust Gain Turn your subwoofer s Level control up to the 5 position half way 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 button 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 preamplifier or stereo to a comfortable level Adjust the subwoofer s 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
3. 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 ENTRA SUB Crossover Adjustments Low Pass Frequency Adjustment control The Low Pass control determines the highest frequency at which the subwoofer reproduces sounds If your main speakers can comfortably reproduce some low frequency sounds set this control to a lower frequency setting between 50Hz 100Hz This will concentrate the subwoofer s efforts on the ultradeep bass sounds required by today s films and music If you are using smaller bookshelf speakers that do not extend to the lower bass frequencies set the Low Pass Frequency Adjustment control to a higher setting between 120Hz 150Hz Note This control will have no effect if the Direct Input is used If you have a Dolby Digital or DTS processor receiver the Low Pass Frequency is set by the processor receiver Consult your owner s manual to learn how to view or change this setting Phase Control The Phase switch determines whether the subwoofer speaker s piston like action moves in and out with the main speakers 0 or opposite the main speakers 1
4. 80 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 MAINTENANCE AND SERVICE The enclosure may be cleaned using a soft cloth dampened with water only 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 frequency 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 loud speaker If the problem appears in the opposite speaker the Cause is in another component or cable In the event that your Interlude loudspeaker system ever needs service contact your local Infinity dealer or Infinity directly at 1 800 553 3332 or www infinitysystems com for a service center near you ENTRA SUB SPECIFICATIONS Entra Sub Freguency Response 34Hz 150Hz 308 Maximum Amplifier Output 150 watts RMS 20Hz 150Hz 500 watts peak with no more than 0 1
5. EL INPUT OUTPUT W Infinity L LINE LEVEL INPUT x DIRECT LEFT SPEAKER RIGHT SPEAKER ENTRA SUB CROSSOVER LEVEL PHASE FREQUENCY 0 1 ot Y 180 min Nmax 507 iso If you have a Dolby Digital or DTS receiver processor with a low frequency effect LFE or subwoofer output fs SUBWOOFER OR LFE OUTPUT SPEAKER LEVEL INPUT OUTPUT Wlnfinity ENTRA SUB L L LINE _ LEVEL INPUT CROSSOVER LEVEL PHASE FREQUENCY 80 d y 1 R R i y 2 e 180 212821 NL If your receiver processor does not contain a Dolby Digital or DTS processor but has a subwoofer output RECEIVER PROCESSOR SUB OUT Ni SPEAKER LEVEL cones Winfinity x WINNI L LINE meurt CROSSOVER LEVEL PHASE FREQUENCY A OR 4 180 DIRECT Sak 7 sa NOTE Some receivers have two subwoofer outputs In that case it is recommended that you use a Y connector not included to maximize performance ENTRA SUB OPERATION Power On
6. THD Crossover Frequencies 50Hz 150Hz 24dB octave continuously variable Driver 10 C M M D Dimensions H x W x D 15 x14 1 2 x17 381mm x 368mm x 432mm Weight 47 Ib 21 4kg Infinity continually strives to update and improve existing products as well as create new ones The specifications and construction details in this and related Infinity publications are therefore subject to change without notice C6 ENTRA SUB NOTES ENTRA SUB Winfinity H A Harman Intemational Company 2000 Infinity Systems Inc 250 Crossways Park Drive Woodbury NY 11797 USA 800 553 3332 USA only www infinitysystems com Trademark of Dolby Laboratories DTS is a registered trademark of Digital Theater Systems Inc Infinity is a registered trademark of Infinity Systems Inc Printed in USA9 00 Part No ENTRASUBOM
7. angle 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 equilateral triangle is intended to alert the user to the presence of important operating and maintenance servicing instructions in the literature accompanying the appliance 1 Read Instructions All the safety and operating instructions should be read before the product is operated 2 Retain Instructions The safety and operating instructions should be retained for future reference 3 Heed Warnings All warnings on the product and in he operating instructions should be adhered to 4 Follow Instructions All operating and use instructions should be followed 5 Cleaning Unplug this product from the wall outlet before cleaning Do not use liquid cleaners or aerosol cleaners Use a damp cloth for cleaning 6 Attachments Do not use attachments not recommended by the product manufacturer as they may cause hazards 7 Water and Moisture To reduce the risk of fire or electric shock do not use this product outdoors or near water for example near a bathtub wash bowl kitchen sink or laundry tub in a wet basement near a swimming pool or the like 8 Accessories Do not place this product on an unstable cart stand tripod bracket or table The product may fall causing seriou
8. ers stoves or other products including amplifiers that produce heat 0 e Antenna Lead In Wire Ground Clamp Antenna Discharge Unit NEC Section 810 20 Grounding Conductors NEC Section 810 21 Electric Service Equipment Ground Clamps Power Service Grounding Electrode System NEC Art 250 Part H ENTRA SUB ENTRA SUB OWNER S GUIDE Table of Contents il Caution iji Important Safety Precautions 1 Unpacking the Subwoofer 1 Placement 2 Controls and Connections 3 System Connections 4 Operation 5 Maintenance and Service 6 Specifications ENTRA SUB Infinity Entra Series The Entra series of loudspeakers and powered subwoofers continues Infinity s longstanding commitment to accurate sound reproduction Our proprietary Ceramic Metal Matrix Diaphragm C M M D drivers along with precision dividing networks and rigid well braced enclosures deliver uncompromised performance in any stereo or multichannel home theater 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 Since the installation of a subwoofer can be somewhat more a lt sup complicated than installing full range speakers it is essential that you read this section very carefully prior to connecting the g m lt RIGHT subwoofer to your system Should you have questions relati
9. ized alternating current line plug a plug having one blade wider than the other This plug will fit into the power outlet only one way This is a Safety feature If you are unable to insert the plug fully into the outlet try reversing the plug If the plug should still fail to fit contact your electrician to replace your obsolete outlet Do not defeat the sa purpose of the polarized plug 13 Power Cord Protection Power supply cords should be routed so that they are not likely to be walked on or pinched by items placed upon or against them paying particular attention to cords at plugs convenience receptacles and the point where they exit from the product 14 Nonuse Periods The power cord of the product should be unplugged from the outlet when left unused for long periods of time 15 Outdoor Antenna Grounding If an outside antenna or cable system is connected to the product be sure the antenna or cable system is grounded so as to provide some protection against voltage surges and built up static charges Article 810 of the National Electrical Code ANSI NFPA 70 provides information with regard to proper grounding of the mast and Supporting structure grounding of the lead in wire to an antenna discharge unit size of grounding conductors location of antenna discharge unit connection to grounding electrodes and requirements for the grounding electrode See Figure A 16 Lightning For added protection for this product during a ligh
10. nd refer servicing to qualified service personnel under the following conditions a The power supply cord or the plug has been damaged or b Objects have fallen onto or liquid has been spilled into the product or c The product has been exposed to rain or water or d The product does not operate normally when following the operating instructions Adjust only those controls that are covered by the operating instructions as an improper adjustment of other controls may result in damage and will often require extensive work by a qualified technician to restore the product to its normal operation or e The product has been dropped or damaged in any way or f The product exhibits a distinct change in performance this indicates a need for service 22 Replacement Parts When replacement parts are required be sure the service technician has used replacement parts specified by the manufacturer or that have the same characteristics as the original part Unauthorized substitutions may result in fire electric shock or other hazards 23 Safety Check Upon completion of any service or repairs to this product ask the service technician to perform safety checks to determine that the product is in proper operating condition 24 Wall or Ceiling Mounting The product should be mounted to a wall or ceiling only as recommended by the manufacturer 25 Heat The product should be situated away from heat sources such as radiators heat regist
11. ng to CHANNEL your installation it is advisable to call either your dealer or SPEAKER Infinity s Customer Service Department 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 PRIMARY level too high will result in an overpowering boomy bass Setting r the volume level too low will negate the benefits of the subwoofer Here are several additional facts on installation 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 wavelengths 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 recommend that you experiment with placement before choosing a final location Figure 1 This example show
12. ral est pr vu pour avertir l utilisateur de la pr sence d instructions importantes pour les op rations et l entretien service dans les manuels fournis avec l appareil ATTENTION POUR EVITER LES CHOCS ELECTRIQUES INTRODUIRE LA LAME LA PLUS LARGE DE LA FICHE DANS LA BORNE CORRESPONDANTE DE LA PRISE ET POUSSER JUSQUAU FOND Este destello luminoso con un simbolo de punta de flecha dentro de un triangulo equil tero tiene el objectivo de alertar al usuario sobre la presencia de voltaje peligroso no aislado dentro de la caja del producto que puede ser de magnitud lo suficientemente grande para constituir un riesgo de choque el ctrico para las personas Este punto de exclamaci n dentro de un tri ngulo equilatero tiene el objectivo de alertar al usuario sobre la existencia de instrucciones operativas y de mantenimiento servicio importantes en la literatura que acompa a el aparato CUIDADO PARA REDUCIR EL RIESGO DE CHOQUE ELECTRICO NO RETIRE LA CUBIERTA O RESPALDO DENTRO NO HAY PIEZAS A LAS QUE EL USUARIO PUEDE DAR SERVICIO REMITA EL SERVICIO AL PERSONAL DE SERVICIO CALIFICADO IMPORTANT SAFETY PRECAUTIONS Read First CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN CAUTION To prevent electric shock do not use this polarized plug with an extension cord receptacle or other outlet unless the blades can be fully inserted to prevent blade exposure The lightning flash with arrowhead symbol within an equilateral tri
13. s injury to a child or adult and serious damage to the product Use only with a cart stand tripod bracket or table recommended by the manufacturer or sold with the product Any mounting of the product should follow the manufacturer s instructions and should use a mounting accessory recommended by the manufacturer 9 A Product and Cart Combination Should Be Moved with Care Quick stops excessive force and uneven surfaces may cause the product and cart combination to overturn 10 Ventilation Slots and openings in the cabinet are provided for ventilation and to ensure reliable operation of the product and to protect it from overheating and these openings must not be blocked or covered The openings should never be blocked by placing the product on a bed sofa rug or other similar surface This product should not be placed in a built in installation such as a bookcase or rack unless proper ventilation is provided or the manufacturer s instructions have been adhered to 11 Power Sources This product should be operated only from the type of power source indicated on the marking label If you are not sure of the type of power Supply to your home consult your product dealer or local power company For products intended to operate from battery power or other sources refer to the operating instructions 12 Grounding or Polarization This product may be equipped with a polar
14. s 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 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 Be sure to leave a minimum of six inches between the wall and the port on the subwoofer ENTRA SUB CONTROLS AND CONNECTIONS Rear Panel fa SPEAKER LEVEL INPUT OUTPUT bed bed bed Dod DEN TETE L INPUT m Wo Infinity ENTRA SUB LINE LEVEL CROSSOVER LEVEL PHASE FREQUENCY BQ MIN MAX Niso o 0 POWER OFF ON 120V 60Hz 3A WARNING SHOCK HAZARD DO NOT OPEN ENTRA SUB Speaker Level Inputs Speaker Level Outputs Line Level Input Direct LFE Input Subwoofer Level Control Phase Switch Low Pass Frequency Adjustment Power Switch If your receiver processor does not have Subwoofer outputs for the left and right channels or an LFE output RECEIVER AMPLIFIER Front Speaker Output LEFT ae RIGHT ITA SPEAKER LEV
15. tning storm or when it is left unattended and unused for long periods of time unplug it from the wall outlet and disconnect the antenna or cable system This will prevent damage to the product due to lightning and power line surges 17 Power Lines An outside antenna system should not be located in the vicinity of overhead power lines or other electric light or power circuits or where it can fall into such power lines or circuits When installing an outside antenna system extreme care should be ety oO Figure A Example of Antenna Grounding as per National Electrical Code ANSI NFPA 70 taken to keep from touching such power lines or circuits as contact with them might be fatal 18 Overloading Do not overload wall outlets extension cords or integral convenience receptacles as this can result in a risk of fire or electric shock 19 Object and Liquid Entry Never push objects of any kind into this product through openings as they may touch dangerous voltage points or short out parts that could result in a fire or electric shock Never spill liquid of any kind on the product 20 Servicing Do not attempt to service this product yourself aS opening or removing covers may expose you to dangerous voltage or other hazards Refer all servicing to qualified service personnel 21 Damage Requiring Service Unplug this product from the wall outlet a
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