Velodyne Acoustics FSR-12 User's Manual
Contents
1. Teppich 0 4 aufstellen die die Bel ftungs ffnungen blockieren kann Subwoofer gleichfalls nicht in einem Regal oder Schrank unterbringen worin die Luftzuluhr behindert wird 9 Warme Subwoofer nicht in der N he von W rmequellen wie Heizk rper W rmespeichern fen oder anderen warmeerzeugenden Subwoolem 10 NetzanschluB Subwoofer nur an eine der in der Bedienungsanleitung beschriebenen oder auf dem Subwoofer angegebenen Stromquellen anschlie en 11 Netzkabelschutz Netzkabel so verlegen da nicht daraufgetreten wird oder sie durch darauf oder dagegengestellte Gegenst nde eingeklemmt werden k nnen Die Anschlu stellen des Netzkabels an Steckdosen und am Subwoofer dabei besonders beachten 12 Vorsicht Zur Vermeidung von Gefahr durch elektrischen Schlag sicherstellen da der Schutzkontakt des Steckers vollst ndig in die Steckdose eingef hrt ist 13 Reinigung Subwoofer nur den Herstelleremplehlungen gem reinigen 14 _ Betriebsfreie Zeitr ume Netzkabel des Subwoofers aus der Steckdose ziehen wenn er ber einen l ngeren Zeitraum nicht benutzt wird 15 Besch digungen durch Gegenst nde oder Fl ssigkeiten Es ist darauf zu achten da keine Gegenst nde auf 2 psp Le 8 I i Der Subwoofer fallengelassen oder besch digt wur 17 Reparatur und Wartung Durch den BA ne Werungema rahmen dee Subwoofers sind aut die in der Bedienungsanleitung angegebenen Prozeduren beschr nkt 18 be2. de maintenance entretien sont fournis avec l enceinte d extr mes graves 1 Lire le mode d emploi Tous les conseils de s curit et de fonctionnement doivent tre lus avant de mettre en marche l enceinte 2 Garder le mode d emploi II est conseill de conserver les conseils de s curit et de fonctionnement pour un ventuel usage futur 3 Avertissements Il est important de se conformer tous les conseils de fonctionnement concernant l enceinte et toutes les instructions inscrites sur l enceinte 4 Suivre les conseils Tous les conseils d utilisation et de fonctionnement doivent tre suivis la r gle 5 Eau et humidit Ne pas utiliser l enceinte pr s d une source d eau par exemple pr s de la baignoire d une bassine de lavage d un vier de cuisine d un bac lavage dans un sous seul mouill pr s d une piscine 6 Pieds et Supports N utiliser que des pieds et supports recommand s par le fabricant 7 Assemblage mural ou au plafond Se conformer uniquement aux instructions du fabricant pour fixer l enceinte sur un mur ou sur un plafond 8 _ Ventilation est important de placer l enceinte de telle sorte qu elle ne g ne pas sa propre ventilation Par exemple ne pas placer l enceinte sur un lit un canap sur la moquette ou sur toute surface similaire qui bloque les ouvertures de ventilation ne pas poser l enceinte dans une meuble encastr ou ferm telle qu une biblioth que ou un meuble qui e
3. do not fall and liquids are not spilled onto the enclosure Damage Requiring Service The subwoofer should be serviced by qualified service personnel when a The power supply cord or plug has been damaged b _ Objects have fallen or liquid has been spilled into the subwoofer The subwoofer has been exposed to rain d The subwoofer does not appear to operate normally or exhibits a marked change in performance The subwoofer has been dropped or damaged Servicing The user should not attempt to service the subwoofer beyond what is described in the operating instructions Do not overload wall outlets extension cords or integral convenience receptacles as this can result in a risk of fire or electric shock Replacement parts When replacement parts are required be sure the service technician has used replacement parts specified by the manufacturer or have the same characteristics as the original part Unauthorized substitutions may result in fire electric shock or other hazards Safety Check Upon completion of any service or service of repairs to this product ask the service technician to perform safety checks to determine that the product is in proper operating condition Al other servicing should be referred to qualified service personnel WICHTIGE SICHERHEITSHINWEISE VORSICHT GEFAHRLICHE SPANNUNG NICHT OFFNEN Vorsicht Zur Vermeidung von Gefahr durch elektrischen Schlag Deckel oder R ckwand nicht abn
4. recommendedby the manufacturer Wall or Ceiling Mounting The subwooler should be mounted to a wall or ceiling only as recommended by the manufacturer Ventilation The subwoofer should be situated so that its location or position does not interfere with ts proper ventilation For example the subwoofer should not be situated on a bed sofa rug or similar surface that may block the ventilation openings or placedin a buil ininstallation such asa bookcase or cabinetthat mayimpede the flow of air through the ventilation openings Heat The subwoofer should be situated away from heat sources such as radiators heat registers stoves or other subwoofers that produce heat Power Sources The subwoofer should be connected to a power supply only of the type described in the operating instructions or as marked on the 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 receptacies and the point at which they exit from the subwoofer Caution To prevent electrical shock match wide blade of plug to wide slo fully inserted Cleaning The subwoofer should be cleaned only as recommended by the manufacturer Nonuse Periods The power cord of the subwoofer should be unplugged from the outlet when left unused for a long period of time Object and Liquid Entry Care should be taken so that objects
5. FSR 10 FSR 12 amp FSR 15 Owner s Manual Velodyne SERVO CONTROLLED Audio Video Subwoofer System IMPORTANT SAFETY INSTRUCTIONS CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN Caution To reduce the risk of electric shock do not remove cover or back No user serviceable parts inside Refer servicing to qualified service personnel The lighting flash with arrowhead symbol 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 symbol is intended to alert the user to the presence of important operating and maintenance servicing instructions in the literature accompanying the subwoofer 1 2 3 4 5 6 7 8 12 13 14 Read Instructions All safety and operating instructions should be read before the subwoofer is operated Retain Instructions The safety and operating instructions should be retained for future reference Heed Wamings All wamings on the subwoofer and in the operating instructions should be adhered to Follow Instructions All operating and use instructions should be followed Water and Moisture The subwoofer should not be used near water for example near a bathtub washbow kitchen sink laundry tub in a wet basement near a swimming pool or the like Carts and Stands The subwoofershouldbe usedonly witha cart or stand
6. PUTS speaker level INTEGRATED AMP RECEIVER SATELLITE SPEAKERS Caution To avoid damage to your main amplifier be sure to maintain correct polarity when making all connections Red positive to red and black negative to black Be sure that all connections are tight and that there are no loose strands or frayed wires Interconnect cables When installing your new Velodyne subwoofer using the line level connections you should always use shielded phono cables There are many decent cables available today most any of which will work perfectly well We do recommend that you keep the length of cable as short as possible to avoid any potential noise problems When using speaker level connections use a decent quality speaker cable that mates well with the connectors Be very careful to avoid any loose strands or frayed wires which may result in a short which may damage your equipment Cables of extremely large size are typically not required Extremely large gauge wire may not properly fitin the binding posts resulting in a poor connection and possible short circuits Placement Truesubwoofers operateat extremely low frequencies which are primarily omni directional While it is recommended that the subwoofer be placed on the same plane as the satellite speakers room and system conditions often dictate otherwise Keep in mind that frequency response and output level can be drastically influenced by placement depending
7. ZHOZ ZHOZL ZHOZ uF Lb XuGL LEX OZ GE X SOL X BL ab Xa HL X wb Cxosdde JyBiam Aueuem sndno sinduj 109 2010 aunjonys aube Jeuben 12J0oM av ssep Jayyduy eseud JOAOSSOID SSEd MOT 4J AOSSOID SSBd YBIH UOILOISIQ JIUOULBH ape asuodsay Aouanba y pimy youlgeo SL YS4 EL Us4 O0L USIJ SNOILVOIHI934S INSTALLATION WORKSHEET Date MODEL SERIAL Installed by Phone Volume Setting Output Level dB Low Pass X Over Hz Phase Pos 0 180 High Pass X Over 80 Hz Sub Sonic 15 Hz 100 Hz 35 Hz Output Levels Speakers Left Front dB Right Front dB Left Rear dB Right Rear dB Center dB FOR YOUR RECORDS DATE PURCHASED DEALER SERIAL NOTE Please complete and retum your warranty card within ten 10 days If you know subwoofers you know about Velodyne Corey Greenberg Home Theater Technology February 1995 Face Off Comparison of five subwoofers the clean full and extended quality of the F 1800R s bass caused me to gasp with the recognition that was finally listening to a real subwoofer our entire listening room swelled with solid satisfying bass as if both musician and instrument were in the room Scenes such as the pre battle sequence in Braveheart may very well have threatened the room s structural integrity had we not backed off the volume a bit Al Griffin Home Theater December 1996 Gear Guide Ve
8. ag s b Des objets sont tomb s ou du liquide a t vers sur l enceinte L enceinte a t expos e la pluie d L enceinte ne semble pas fonctionner normalement ou indique un changement de performance e L enceinte est tomb e par terre ou a t endommag e 17 Entretien L utilisateur ne doit pas tenter de r parer l enceinte au del de ce qui est d crit dans le mode d emploi 18 Surcharge Ne pas surcharger les prises murales les rallonges ou les prises femelles encastr es de commodit On risquerait un incendie ou un choc lectrique 19 Pi ces de rechange Lorsque le remplacement d une pi ce s av re n cessaire s assurer que le technicien utilise la pi ce sp cifi e par le fabriquant ou une pi ce poss dant les m mes caract ristiques que la pi ce d origine Les substitutions non autoris es peuvent provoquer des incendies ou des chocs lectriques ou pr senter d autres dangers 20 Contr le de s curit Apr s toute intervention technique sur ce produit neuf ou r par demander au technicien de proc der un contr le de s curit pour v rifier qu il est en bon tat de marche Toute autre r paration doit tre r f r e du personnel qualifi Congratulations Congratulations on your purchase of a Velodyne servo controlled subwoofer system This system represents the state of the art in accurate low frequency reproduction We believe these units tobesome ofthe finestsoundi
9. be determined by the continued better job reproducing high frequencies By utilizing this method you will have a bi amplified system gaining improved power and headroom for your system Subwoofer outputs The Velodyne subwoofer is designed to operate using the full range audio signal for input when using the built in crossover Some processors receivers have a subwoofer out jack thatis internally filtered and designed to be used with a conventional amplifierand speaker In some rare cases combining both an external crossover and the one internal to the subwoofer may result in low output and increased noise In these installations you may need to bypass the internal crossover in either the processor or Velodyne subwoofer In some installations simply setting one crossover toa higher frequency such as 120 Hz will restore maximum performance To bypass the subwoofer s internal crossover when the unit is being fed a low pass signal from another crossover simply locate the switch marked X over OUT IN on the rear panel of the subwoofer and set to the OUT position This will eliminate the internal crossover from the signal path Note If not using an external crossover you should use the built in crossover for optimal performance Speaker level connection Figure 2 shows an easy way to connect your Velodyne subwoofer directly to your receiver or integrated amplifier When connected in this fashion your satellite sp
10. damental signal While conventional subwoofers offer little to combat distortion products we at Velodyne have developed another way The Velodyne servo control solution The Velodyne FSR 10 12 15 produces sound in the same manner as conventional loudspeakers a cone shaped piston is forced to move by means of a linear motor composed ofa coil situated between the poles of a very strong permanent magnet In our F series products however a feedback mechanism is provided to link the driver to the amplifier creating a control system loop Atthe heart of this control system is a low mass accelerometer rigidly attached to the voice coil The accelerometer continuously monitors cone motions providing us with a feedback signal for the servo control circuitry This high gain system is designed to improve linearity and reduce distortion approximately 30 times over conventional non servo systems While the input signal is being sent to the class AB amplifier which powers the driver a continuous signal representing cone motion is sent back to a comparator circuit This circuit constantly adjusts for any deviation between the input signal and the subwoofer s output This self regulation results in extreme control over cone movement and very accurate low distortion sound At typical listening levels these servo controlled units produce less than 1 harmonic distortion with input signals extending to 20Hz and below Far better than conventional design
11. eakers will be crossed over at 80 100Hz which removes the lower bass from your speakers enabling them to do a better job reproducing high frequencies You may also connect your satellites directly to your receiver or amplifier along with the subwoofer if you wish to bypass the internal high pass crossover manual volume control setting Initial setup of the unit should be performed with the remote volume at neutral while you adjust the manual volume knob to match playback levels The mute button silences the unit If you choose to utilize the remote to tum the unit on off we suggest setting the auto turn on switch to the on position This deactivates the sensing circuitry allowing the remote to have total control of unit power NOTE Two AAA batteries are required amp included for operation If the remote control operating range deteriorates please check batteries for deterioration Do not leave remote placed on heat generating items such as amplifiers Line level connection Figure 1 shows connection to a pre amplifier s main outputs and returning them to your amplifier inputs When installed in this fashion your satellite speakers will be crossed over at 80 100Hz which removes the lower bass from your amplifier and speakers enabling them to do a Figure 1 Installation using line level inputs MAIN OUTPUTS LEFT RIGHT Figure 2 Installation using speaker level from amplifier inputs MAIN OUT
12. ehmen Produkt enth lt keine Anwenderteile Reparatur und Wartung nur von qualifiziertem Fachpersonal vornehmen lassen Das Blitzsymbol dient als Hinweis auf unisolierte gef hrliche Spannungen innerhalb des Geh uses deren Werte eine Ber hrungsgefahr f r den Menschen darstellen k nnen Das Symbol mit dem Ausrufungszeichen dient als Hinweis auf wichtige in den Unterlagen des Subwoofers enthaltene Bedienungs und Wartungsvorschriften 1 Anleitungen lesen Alle Sicherheits und Bedienungsanleitungen vor Inbetriebnahme des Subwoofers aufmerksam durchlesen 2 Anleitungen aufbewahren Die Sicherheits und Bedienungsanleitungen zur sp teren Bezugnahme aufbewahren Wamungen beachten Alle Wamungen am Subwoofer und in der Bedienungsanleitung unbedingt beachten Anleitungen befolgen Alle Bedienungs und Gebrauchsanleitungen genau befolgen Wasser und Feuchtigkeit Subwoofer nicht in der Nahe von Wasser aufstellen d h neben einer Badewanne Sp le Waschmaschine in einem feuchten Keller in der N he des Swimmingpools o Rollwagen und St nder Subwoofer nur mit einem vom Hersteller empfohlenen Rollwagen oder St nder benutzen 7 Wand oder Deckenbelestigung Subwoofer nur den Herstelleremplehiungen gem an der Wand oder Decke befestigen 8 Bel ftung Subwoofer so aufstellen da die erforderliche Bel ftung nicht behindert wird D h Subwoofer nicht auf einer weichen Oberfl che wie einem Bett Sofa
13. ency output With larger speakers you might start with this control set lower such as 80Hz A bypass switch is also provided if you wish to use an external crossover If you are not using an external crossover we recommend that you use the one provided within the unit for optimum performance Phase adjustment 0 180 This control allows you the reverse the phase of the subwoofer s output signal 180 to correct for any possible mismatch amp resulting cancellation between the subwoofer and your main speakers amplifier To adjust simply listen to the system with music playing Then move the switch from one position to the other and listen for a change in low frequency output The correct position will have a greater amount of apparent low frequency output Subwoofer Direct switch In Out This switch allows the electronic crossover circuitry to be removed from the signal path This is required in certain installations which route the signal through extemal processors with a crossover circuit of their own such as the new digital units Simply move the switch to OUT to disengage the built in crossover For all other installations which do not have a separate electronic crossover we recommend you leave the internal crossover IN to provide optimum performance Auto turn on function With this function in the auto position your subwoofer can be safely left with the main power switch on continuously The subwoofer will turn itself on au
14. lass AB amplifier FSR 10 amp FSR 12 e Built in 250 watt RMS class AB amplifier FSR 15 e Accelerometer based servo control system for extreme accuracy e Adjustable 40 to 120Hz low pass crossover defeatable Selectable 80 or 100Hz high pass crossover outputs e Line level RCA inputs amp outputs e Speaker level inputs amp outputs with 5 way binding post connections Signal sensing auto turn on off defeatable e Variable volume control e Selectable phase control 0 or 180 e Frequency response of 18Hz 120Hz 3dB FSR 15 e Frequency response of 20Hz 120Hz 3dB FSR 10 amp FSR 12 Multiple staggered low pass crossovers 12dB octave initial 48dB octave ultimate e Gain compression circuit prevents over excursion amp amp clipping Infrared remote control with power volume amp mute functions e Power on amp protection indicator LED green Installation Your new Velodyne servo subwoofer provides for a number of installation options Read all the installation information below in order to determine which installation option is best for your system Remember to perform all installation procedures with system power turned off Inputs Your new subwoofer is equipped with speaker level and line level inputs Use the LINE LEVEL jacks when connecting your subwoofer to a pre amp signal processor line level crossover or receiver with pre amp level outputs The SPEAKER LEVEL jacks connect directly
15. lodyne Acoustics Inc 1070 Commercial St Suite 101 San Jose CA 95112 408 436 7270 voice 408 436 7276 fax Web Site http www velodyne com E mail velodyne earthlink net CSS 10 98 63 616 Rev D
16. mp che l air de circuler par les ouvertures de ventilation de l enceinte 9 Chaleur Placer l enceinte loin de toute source de chaleur tels que radiateurs compteurs thermiques fours ou autres enceintes d gageant de la chaleur 10 Sources d lectricit Ne brancher l enceinte que dans une prise du type d crit dans le mode d emploi ou comme indiqu par le fabricant 11 Protection du cordon lectrique Les cordons lectriques doivent tre fix s pour viter que toute personne ne marche dessus et que rien ne puisse tre plac sur ou contre eux faire tout particuli rement attention aux cordons branch s dans des prises lectriques des r ceptacles et leurs points de sorties de l enceinte 12 Attention Afin d viter tout choc lectrique introduire la lame la plus large de la fiche dans la bome correspondante de la prise et pousser jusqu au fond 13 Nettoyage Pour le nettoyage de l enceinte suivre scrupuleusement les instructions du fabricant 14 P riodes de non utilisation Le cordon lectrique de l enceinte doit rester d branch si l enceinte reste inutilis e pendant une longue p riode de temps 15 Infiltration d objet ou de liquide Faire attention ce qu aucun objet ne tombe et ce qu aucun liquide ne soit vers sur l enceinte 16 Dommages n cessitant r paration L enceinte ne doit tre r par e que par du personnel qualifi lorsque a le cordon lectrique ou la prise ont t endomm
17. nded period of time one of the protection circuits may be engaged Has the built in amplifier overheated e Is your power line voltage sagging under heavy use Ifthe protection circuitry is active the unit may cycle on and off until operating parameters return to normal Protection circuit operation is usually indicated by a blinking power led Under more serious conditions the unit may shut off completely Normal operation will return upon cooling but you may be required to turn the power off and then on again to reset the unit The following conditions require service by a qualified technician 1 The power cord has become damaged 2 The unit does not appear to operate normally or exhibits a marked change in performance 3 The unit has been exposed to water 4 Some part of the cabinet or circuitry is physically damaged Thank you for purchasing a Velodyne continued eanou jnoyym abuey gt o Joalgns ase suoyeyeds Gxz2 sq109 Byez sal os uoge 9 sued sisi omL JoAg seyeeds 349 217 j naj s yeads 9 jana eur punom a6pe SZ SZ sql t ve zo 06 sql GOL 20021 Sql SOL ZO 041 sql bel zoog sagp zog st ZO GZ Buuy puemuoy G Buy p emioy Zh Buuy Premio OL 6 Sp sal 86 ye d M OSL yead M 992 yead M 592 SWY M 087 SWY M 021 SWS M0ZL 08L oO ejewnin enepo gp gp IEMUI Ae O gP ZL ZHOZL ZHOY enejpoygp 9 ZHOO 10 ZHO8 L gt l gt l gt ZHOZL ZH8L ZHOZL
18. ng subwoofers available When properly cared for this exceptional subwoofer will provide you with years of unparalleled listening pleasure Enjoy Caution jas lease observe the following instructions to insure safe and proper system operation Warning To prevent fire or shock hazard do not expose this equipment to rain or moisture To avoid electrical shock do not open speaker enclosure or amp chassis cover Please observe all warnings on the eguipment itself There are no user serviceable parts inside Please refer all service questions to your authorized Velodyne dealer Prior to installation Please unpack the system carefully This unit is extremely heavy Use caution when lifting of moving to avoid injury Remove all staples used to seal the carton as they can scratch the cabinet Please save the carton and all packaging materials for future use Packing this unit in any other carton may result in severe damage when shipping Please take a moment to record the serial number and date location of purchase in the space provided on the warranty card for future reference Note Do not move the unit while power is on You may damage the Servo Control circuitry Product Features amp Controls e 10 subwoofer with 2 1 2 voice coil amp 750z magnet FSR 10 e 12 subwoofer with 2 1 2 voice coil amp 750z magnet FSR 12 e 15 subwoofer with 3 voice coil amp 210 oz magnet FSR 15 e Built in 120 watt RMS c
19. on the acoustic properties of the listening room Typically the optimum location for a subwoofer istucked away ina comer of your listening room This location will usually offer the greatest output levels and optimum low frequency extension The worst location for a subwoofer it typically far away from any walls and close to the center of your room Avoid these locations when possible When using a pair of Velodyne subwoofers in stereo it is preferable to place each subwoofer by the satellite of the same channel Caution This subwoofer has electronics built into the cabinet Do not place the cabinet next to sources of heat such as furnace registers radiators etc Do not place the unit near sources of excessive moisture such as evaporative coolers humidifiers etc The power cord should be routed in such a way that it will not be walked on pinched or compressed in any way that could result in damaging the insulation or wire Regardless of where you install your Velodyne subwoofer it must remain in an upright position woofer facing forward Using shipping or otherwise storing the subwoofer in any other position for an extended period of time may result in damage to the unit not covered by warranty The FSR 10 12 15 subwoofers are not magnetically shielded When installing near television monitors test placement with the monitor operational to observe any change in colors Certain types of televisions are particularly sensitive to st
20. ray magnetic fields If your continued television produces distorted colors after installing your subwoofer simply increase the distance between your television and the subwoofer until normal color and operation is returned Protection circuitry Your new subwoofer is equipped with special protection circuitry to provide maximum performance with greatest reliability The unit is protected against 1 Overdriving the speaker or amplifier 2 Overheating the amplifier 3 Excessive drop in power line voltage The first type of protection circuitry which prevents overdriving of the speaker or amplifier Operates constantly without being audible under most situations In some extreme situations sustained high output levels the unit may shut down momentarily The green power led may also blink rapidly This indicates operation of the thermal protection circuitry If this should happen you should reduce the volume setting or shut the unit off until normal operating conditions return You may also want to plug the unit intoa different wall outlet as dropping power line voltage will be most noticeable under strenuous conditions Distortion in loudspeakers Nonlinear distortion is a problem which plagues all speakers This particular type of distortion is a common problem in subwoofers which must move large amounts of air to produce adequate levels of deep bass Nonlinear distortion is defined as any form of distortion that move
21. rlastung Zur Vermeidung von Brandgefahr und elektrischem Schlag Wandsteckdosen Verl ngerungskabel bzw eingebaute Steckdosen nicht berlasten 19 Ersatzteile Wenn Ersatzteile ben tigt werden sicherstellen da der Servicetechniker entweder die vom Hersteller angegebenen Ersatzteile benutzt oder Teile die den Originalteilen entsprechende Kennwerte besitzen Die Verwendung von Ersatzteilen die nicht zugelassen sind kann Br nde elektrischen Schlag oder andere Gefahren verursachen 20 Sicherheitspr fung Nach Beendigung von Wartungs oder Reparaturma nahmen an diesem Produkt vom Servicetechniker Sicherheitsprifungen zum Nachweis des ordnungsgem en Betriebszustandes vornehmen lassen Alle anderweitigen Servicema nahmen von qualifiziertem Wartungspersonal durchf hren lassen IMPORTANTES CONSIGNES DE SECURITE Risque d electrocution Ne pas ouvrir Attention Afin d viter tout risque d lectrocution ne pas enlever le boitier ou partie arri re de l enceinte Aucune pi ce ne doit tre manipul e par l utilisateur Pour tout entretien vous r f rer un personnel de service qualifi Le symbol de l clair avec la fl che sert avertir l utilisateur de la pr sence d un voltage dangereux non isol dans l enceinte du produit d une magnitude pouvant constituer un risque d lectrocution de personnes Le symbol du point d exclamation sert avertir l utilisateur que d importants conseils de fonctionnement et
22. s currently on the market This combination provides you with the best combination of clean deep accurate bass without making any sacrifice to distortion Care of your subwoofer Do not use any harsh detergents or chemicals to clean the cabinet Abrasives detergents or cleaning solutions may damage the finish on the cabinet We recommend using a damp cloth to clean the cabinet During normal conditions your new subwoofer may be left on continuously without any problems The unit is equipped with asignal sensing turn on off that will automatically turn on the unit when a signal is present at the inputs and turn off the unit after several minutes when there is no longer any signal at the inputs If you plan to leave the subwoofer unused for an extended period of time we recommend that you turn off the master power switch on the rear panel Troubleshooting amp Service Ifyou should experience a problem with the operation of your subwoofer please check all of the following before seeking service Following is a simple troubleshooting guide to assist you Verify unit is plugged in and power outlet used is active Is power switch on Is auto turn on off set properly Is unit receiving an input signal from your source Have all controls on subwoofer volume crossover phase etc been properly set Is the mute on the remote control engaged Are both volume controls properly set If unit has been running at high levels for an exte
23. s energy from one portion of the audio frequency spectrum to another When a single tone is applied to a nonlinear system the result is harmonic distortion In which some of the energy leaves the system at multiples of the original frequency When multiple tones are applied intermodulation tones are produced usually as simple combinations of the input frequencies Generally 3 distortion is considered a reasonable amount for speakers This means that 3 of the total energy leaving the speaker is at frequencies other than the intended input signal Most subwoofers on the market today however produce much more than 3 distortion at common listening levels Many models we have tested produce greater than 20 distortion 20Hz when driven to 100dB This is a typical output level obtained in many systems particularly home theater systems Even at 1 watt many conventional units produce several percent distortion Secondly the odd order higher harmonics are much more offensive to the human ear than the closer 2nd harmonic An interesting result of this reduced distortion is that some of the bass when played over an extremely accurate subwoofer system seems to actually be missing The truth however is that the missing bass was never there to begin with Distortion products of conventional woofers actually add to the bass spectrum making it appear louder than recorded This is due to the additional and unwanted harmonics distortion of the fun
24. to the speaker outputs of any amplifier integrated amplifier or receiver Your amplifier section will notice no additional loading effects when you use these inputs due to their very high impedance _ y Important Do not use both LINE LEVEL and SPEAKER LEVEL connections simultaneously Volume control This control allows you to balance the output from the subwoofer to the main speakers amplifier in your system This control should be set to achieve similar output level from both the main speakers and subwoofer when listening to music The remote may then be used for minute temporary adjustments such as increasing the volume for home theater usage A good starting point for the volume control is 3 or 4 dots from minimum Low pass crossover 40 to 120Hz All inputs sum the left and right channels together with the resulting signal passing through an adjustable low pass crossover before being amplified The crossover control allows you to adjust the upper limit of the subwoofer s frequency response from 40 to 120Hz The subwoofer s response will begin rolling off above the frequency you set this control to You should set the crossover frequency to obtain a smooth and seamless transition from the subwoofer to the main speakers in your system If your main speakers are smaller units with limited low frequency output you may wish to choose a higher frequency such as 100 120Hz than you would with larger speakers which have greater low frequ
25. tomatically when an audio signal is present If no signal is present for approximately 15 minutes the unit will switch to standby mode While in standy mode your subwoofer will draw very minimal power This function can be disabled by leaving the switch in the on position High pass crossover switch 80 100Hz This switch selects the frequency for the high pass crossover outputs This crossover is functional on both line and speaker level outputs Smaller speakers with limited low frequency ability may prefer the higher 100Hz setting which will reduce the low frequencies sent to them Larger speakers with greater low frequency output may be able to handle the 80Hz setting without strain Power switch The master power switch is located on the right half of the unit This rocker style switch is the main on off for the unit This switch should be set to position 1 up for on and 0 down for off If the unit is to be left unused for an extended period of time the master power switch should be turned off Infrared remote control The remote control unit supplied with your subwoofer allows for convenient adjustment of select subwoofer functions The power button turns the unit on off The volume buttons on the remote allow you to increase or decrease the output volume of the unit relative to the setting of the main volume control on the rear panel The middle reset button returns the remote volume control to neutral output level will then
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