Velodyne Acoustics HGS-15X THX User's Manual
Contents
1. Vision June 2001 How do they get this kind of bass out of such a tiny box Deep tight tuneful and loud enough to rattle pictures on the wall this is serious subwoofing Robert Deutsch Stereophile Guide to Home Theater September 1998 Velodyne Acoustics Inc 345 Digital Drive Morgan Hill CA 95037 408 465 2800 voice 408 779 9227 fax www velodyne com Service E mail service velodyne com Product E mail help velodyne com Technical E mail techhelp velodyne com Printed on recycled paper 10 03 63 HGS15X RevA2. Wall or Ceiling Mounting The subwoofer should be mounted to a wall or ceiling only as recommended by the manufacturer 8 Ventilation The subwoofer should be situated so that its location or position does not interfere with its 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 built in installation such as a bookcase or cabinetthat may impede the flow of air through the ventilation openings 9 Heat The subwoofer should be situated away from heat sources such as radiators heat registers stoves or other subwoofers that produce heat 10 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 subwoofer 11 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 at which they exit from the subwoofer 12 Caution To prevent electrical shock match wide blade of plug to wide slot fully inserted 13 Cleaning The subwoofer should be cleaned only as recommended by the manufacturer 14 Nonuse Periods The power cord of the subwoofer should be unplugged from the outlet when left unused for a long period of time 15 Object and Liquid Entry Care should be
3. taken so that objects do not fall and liquids are not spilled onto the enclosure 16 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 C The subwoofer has been exposed to rain d The subwoofer does not appear to operate normally or exhibits a marked change in performance e The subwoofer has been dropped or damaged 17 Servicing The user should not attempt to service the subwoofer beyond what is described in the operating instructions 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 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 20 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 All other servicing should be referred to qualified service personnel an 8 D o IMPORTANTES CONSIGNES DE SECURITE ATTENTION Risque d lectrocution Attention Afin d viter tout ri
4. 7 piston diameter 2200z 13 7 lbs 3800z 24 Ibs Tandem 3 push pull Line level Balancedand speaker level Line level andspeaker level Two years parts and labor 95 bs approx 43Kg Specifications are subject to change without notice FOR YOUR RECORDS DATE PURCHASED DEALER SERIAL NOTE Please complete and return your warranty card within ten 10 days or Register ONLINE It s faster and easier www velodyne com 14 UE Date Installed by Installation Worksheet Model Serial Phone Volume Setting Low Pass X Over High Pass X Over 80Hz 100Hz OutputLevels Speakers LeftFront dB LeftRear dB Center Output Level dB Hz Phase Pos 0 180 Sub Sonic 15 Hz 35 Hz RightFront dB RightRear dB dB Other Velodyne Subwoofer Products CHT Series SPL Series Il CHT 8 SPL 800 Series II CHT 10 SPL 1000 Series Il CHT 12 SPL 1200 Series II CHT 15 SPL 523 Satellites CHT Front Row System Digital Drive Series Vet DD 10 DD 12 DLS Series DD 15THXUltra2 DES 3500 DD 18 THX Ultra 2 DLS 3750 DLS 4000 Signature 1812 Deco System Deco System Deco Satellites 15 Not only was the little Velodyne the best small sub I ve ever used it was one of the very best subs I ve used John Potis SoundStage April 2002 The SPL 1200 was able to hit an impressively deep 16 Hz Tom Noussaine Sound amp
5. HGS 15X THX Ultra2 Owner s Manual Veloayne High Gain 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 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 Warnings All warnings 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 washbowl kitchen sink laundry tub in a wet basement near a swimming pool or the like Carts and Stands The subwoofer shouldbe used only with acartor stand recommended by the manufacturer 7
6. The crossover control allows youto 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 youset this control to You should set the crossover frequency to obtain asmooth and seamless transition from the subwoofer to the main speakers in your system If yourmain 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 frequency output With larger speakers you might start with this control set lower such as 80Hz continued 3 p 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 Phaseadjustment 07 180 This control allows you the reverse the phase of the subwoofer s output signal 180 to correct for any possible mismatch and resulting cancellation between the subwoofer and yourmainspeakers amplifier To adjust simply listen to the system with music playing Then move the switch from one position to the other and listen forachangeinlow frequency output The correct position will havea greater amount of apparent low frequency output Subsonic 15Hz THX 35Hz This adjustmentalters the low frequency limit of the subwoofer For most systems we recommend the 15Hz setting wh
7. angers 20 Contrdle 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 Ne pas ouvrir a no WICHTIGE SICHERHEITSHINWEISE VORSICHT GEFAHRLICHE SPANNUNG NICHT OFFNEN Vorsicht Zur Vermeidung von Gefahr durch elektrischen Schlag Deckel oder R ckwand nicht abnehmen 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 2 3 4 5 10 11 12 13 14 15 16 17 18 19 20 Anleitungen lesen Alle Sicherheits und Bedienungsanleitungen vor Inbetriebnahme des Subwoofers aufmerksam durchlesen Anleitungen aufbewahren Die Sicherheits und Bedienungsanleitungen zur sp teren Bezugnahme aufbewahren Warnungen beachten Alle Warnungen am Subwoofer und in der Bedienungsanleitung unbedingt beachten Anleitungen befolgen Alle Bedienungs und Gebrauchsanleitungen genau bef
8. att 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 Aninteresting 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 Thisis due to the additional and unwanted harmonics distortion of the fundamental signal While conventional subwoofers offer little tocombat distortion products we at Velodyne have developed another way The Velodyne Servo Control Solution Your Velodyne HGSX subwoofer produces soundinthesamemannerasconventional loudspeakers a cone shaped piston is forced to move by means ofa linear motor However this is about the only conventional part of the subwoofer 10 UE We determined that conventional motors are unacceptable when called upon to produce the amount of linear motion we desired This inadequacy led us to design an improved motor structure by incorporating two coils operating out of phase ina push pull configuration within two magnetic gaps and suspended by dual spiders for even greater linearity We designed this motor to produce over one inch 1 1 8 tobe exact of linear motion with amaximum mechanical limi
9. el the distortion barely exceeds 1 far betterthan any conventional design 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 Werecommend using a damp cloth to clean the cabinet During normal conditions your new subwoofer may be left on continuously withoutany problems The unitis equipped with a signal sensing turn on offthat will automatically turn on the unit whenasignalis presentatthe inputs and turn off the unitafter several minutes when there is nolonger 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 12 LEN Troubleshooting and Service If youshould experience a problem with the operation of your subwoofer please check all of the following before seeking service Following isa simple troubleshooting guide to assist you l Verify unitis plugged in and power outlet used is active 2 Ispowerswitchon 3 Is auto turn on off set properly 4 Isunitreceiving an input signal from your source 5 Haveall controls on subwoofer volume crossover phase etc been properly set 6 Isthemuteonthe remote control engaged 7 Areboth volu
10. ere Gefahren verursachen Sicherheitspr fung Nach Beendigung von Wartungs oder Reparaturma nahmen an diesem Produkt vom Servicetechniker Sicherheitspr fungen zum Nachweis des ordnungsgem en Betriebszustandes vornehmen lassen Alle anderweitigen Servicema nahmen von qualifiziertem Wartungspersonal durchf hren lassen Congratulations Congratulations on your purchase ofa Velodyne subwoofer system This system represents the absolute state of the artin accurate low frequency reproduction We believe this tobe the finest subwoofer available anywhere In this new subwoofer we have combined our radical new driver and amplifier designs to obtain our traditionally accurate sound while increasing efficiency and output to new standards This exceptional subwoofer will provide you with years of unparalleled listening pleasure Enjoy Caution Please observe the following instructions to insure safe and proper system operation Note Do not move unit while turned on or plugged in Do not leave unit in direct sunlight or use in high humidity environments Warning To prevent fire or shock hazard do not expose this equipment to rain or moisture To avoidelectrical shock do not open speaker enclosure or amp chassis cover Please observe all warnings on the equipmentitself There are no user serviceable parts inside Please refer all service questions to your authorized Velodyne dealer Prior to installation Please unpack the syste
11. fier When connected in this fashion your satellite speakers will be crossed over at 80 100Hz whichremoves the lowerbass from your speakers enabling them to do abetter 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 Caution To avoid damage to your main amplifier be sure to maintain correct polarity when making allconnections Red positive to red and black negative to black Besurethatallconnections are tight and thatthereare no loose strands or frayed wires Figure 2 Installation Using Speaker Level from amplifier Inputs foe TE z MAINOUTPUTS speaker level INTEGRATED AMP RECEIVER SATELLITESPEAKERS 7 DES Interconnect Cables Wheninstalling yournew 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 Wedorecommend 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 ina short which may damage your equipment Cables of extremely largesize are typically notrequired Extremely large gauge wire may not properl
12. i layerresin laminate cone High excursionrubbersurround Installation Yournew Velodyne servo subwoofer provides for anumber 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 Yournew subwoofer is equipped with speaker level line leveland balanced XLR inputs Use the LINE LEVEL jacks when connecting your subwoofer to a pre amp signal processor line level crossover orreceiver with pre amp level outputs The SPEAKERLEVEL jacks connect directly 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 Important Donotuse both LINE LEVELand SPEAKER LEVELconnections simultaneously Volumecontrol 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 Theremote may then be used forminute temporary adjustments such as increasing the volume forhome theater usage Low pass crossover 40 to 120Hz Allinputs sum the left and right channels together with theresulting signal passing through an adjustable low pass crossover before being amplified
13. ich will allow the subwoofer to deliver the maximum low bass outputit was designed for In certain movie theater installations which suggest that theextreme low bass be limited move the switch position to 35Hz and the response will be attenuated below this frequency Crossover switch In Out THX This switch allows theelectronic crossover circuitry to beremoved from the signal path This is required in certain installations which route the signal through external processors witha crossover circuit of their own suchas thenew 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 Autoturnon 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 automatically when an audio signal is present Ifno 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 External remote jack Thisconnectionallows an auxiliary infraredremotereceiver eye tobe installedand placed where most convenient This option is usually only required when the subwoofer is to be partofacustom installation in which the bui
14. ist Reinigung Subwoofer nur den Herstellerempfehlungen gem reinigen Betriebsfreie Zeitr ume Netzkabel des Subwoofers aus der Steckdose ziehen wenn er ber einen l ngeren Zeitraum nicht benutzt wird Besch digungen durch Gegenst nde oder Fl ssigkeiten Es ist darauf zu achten da keine Gegenst nde auf das Geh use fallen oder Fl ssigkeiten darauf versch ttet werden Besch digungen die eine Reparatur erforderlich machen Subwoofer sollte von qualifiziertem Fachpersonal repariert werden wenn a Das Netzkabel oder der Stecker besch digt sind b Gegenst nde oder Fl ssigkeiten in den Subwoofer gelangt sind C Der Subwoofer dem Regen ausgesetzt wurde d Der Betrieb des Subwoofers gest rt ist oder seine Leistung deutlich nachgelassen hat e Der Subwoofer fallengelassen oder besch digt wurde Reparatur und Wartung Durch den Benutzer auszuf hrende WartungsmaBnahmen des Subwoofers sind auf die in der Bedienungsanleitung angegebenen Prozeduren beschrankt Uberlastung Zur Vermeidung von Brandgefahr und elektrischem Schlag Wandsteckdosen Verlangerungskabel bzw eingebaute Steckdosen nicht Uberlasten 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 and
15. 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 endommag s b Desobjets sont tomb s ou du liquide a t vers sur l enceinte c Lenceinte a t expos e la pluie d Lenceinte ne semble pas fonctionner normalement ou indique un changement de performance e Lenceinte 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 d
16. ltin eye located adjacent to the speaker on the front baffle will be hidden ina location where itcan not adequately receive signals from the remote High pass crossover switch 80Hz THX 100Hz This switch selects the frequency for the high pass crossover outputs This crossoveris 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 Powerswitch 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 unitis to be leftunused for an extended period of time the master power switch should be turned off Detachable power cord Allows foreasy replacement should the original be damaged Line Level Connection Figure 1 shows connection toa 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 whichremoves the lower bass from youramplifierand speakers enabling them to do abetter job reproducing high frequencies By utilizing this method you will haveabi amplified system gaining improved powerandheadroom for your system THX Ultra 2 Operation On
17. m carefully This unit is extremely heavy Use caution when lifting of moving to avoidinjury 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 unitin 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 continued 1 p Product Features and Controls 15 12 7 piston diameter subwoofer with tandem 3 voice coils and 220 oz magnet e Built in 1250 watt RMS highefficiency class D amplifier Accelerometer based servo control system for extreme accuracy Adjustable 40 to 120Hz low pass crossover defeatable e Selectable 80 or 100Hz high pass crossover outputs e Balanced XLR inputs Line level RCA inputs amp outputs Speaker level inputs and outputs with 5 way binding post connections e Signal sensing auto turn on off defeatable e Variable volume control Selectable phase control 0 or 180 e Selectable subsonic filter 15Hz or 35Hz Frequency response of 18 120Hz Detachable power cord Magnetically shielded for video use Multiple staggered low pass crossovers 1 2dB octave initial 48dB octave ultimate e Gain compression circuit prevents overexcursion and amp clipping Externalremote connector for custom installation Poweron e Mult
18. mecontrols properly set amp Ifunithasbeenrunningathighlevelsforanextended period of time one ofthe protection circuits may be engaged Hasthe built in amplifier overheated Is your power line voltage sagging under heavy use If the protection circuitry is active the unit may cycle on and off until operating parameters return to normal Protection circuit operation is usually indicated by ablinking power LED Under more serious conditions theunitmay shutoffcompletely Normal operation will return upon cooling but you may be required to turn the power off and then on again to reset theunit The following conditions require service by a qualified technician 1 Thepowercordhasbecome damaged Theunitdoes not appearto operate normally or exhibits a marked change in performance 3 Theunithas been exposed to water 4 Some part of the cabinet orcircuitry is physically damaged Thank you for purchasing a Velodyne 13 Um SPECIFICATIONS HGS 15X THX Ultra 2 Cabinet H W D Frequency Response Harmonic Distortion Subsonic Filter High Pass Crossover Low Pass Crossover Phase Amplifier Woofer forward firing Magnet Magnet Structure VoiceCoil Inputs Outputs Warranty Weight 19 75 x 18 x 17 7 8 49x45x45cm 18Hz 120Hz 3dB less than 5 15Hzor35Hz 80Hzor 100Hz 6dB octave 40Hz 120Hz 12dB octaveinitial 48 dB octave ultimate 0 180 Class D 1250 watts RMS 3000 watts peak 15 12
19. olgen Wasser und Feuchtigkeit Subwoofer nicht in der N he 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 Wand oder Deckenbefestigung Subwoofer nur den Herstellerempfehlungen gem an der Wand oder Decke befestigen 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 Teppich o aufstellen die die Bel ftungs ffnungen blockieren kann Subwoofer gleichfalls nicht in einem Regal oder Schrank unterbringen worin die Luftzufuhr behindert wird Warme Subwoofer nicht in der Nahe von Warmequellen wie Heizk rpern W rmespeichern Ofen oder anderen warmeerzeugenden Subwoofern aufstellen NetzanschluB Subwoofer nur an eine der in der Bedienungsanleitung beschriebenen oder auf dem Subwoofer angegebenen Stromquellen anschlieBen Netzkabelschutz Netzkabel so verlegen daf 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 Vorsicht Zur Vermeidung von Gefahr durch elektrischen Schlag sicherstellen da der Schutzkontakt des Steckers vollst ndig in die Steckdose eingef hrt
20. protection circuitry If this should happen you should reduce the volume setting or shut the unit offuntil normal operating conditions return You may also want to plug the unitinto a different wall outlet as dropping power line voltage will be mostnoticeable under strenuous conditions continued 9 p Distortion in Loudspeakers Nonlinear distortion is a problem which plagues all speakers This particular type of distortion is acommon problem in subwoofers which must move large amounts of airto produce adequate levels of deep bass Nonlinear distortion is defined as any form of distortion that moves energy from one portion of the audio frequency spectrum to another When asingle tone is applied toanonlinear system the result isharmonic 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 areasonable 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 atcommon listening levels Many models we have tested produce greater than 20 distortion 20Hz when driven to 100dB This is atypical output level obtained in many systems particularly home theater systems Even at 1 w
21. rtion by decreasing cone flex and breakup Attached to the edge of the cone is our newly designed rubber surround tailored for long life under the high excursions these units are capable of As in our other servo products we then incorporated closed loop accelerometer based servo control of the loudspeaker At the heart of this control system is alow mass accelerometer rigidly attached to the voice coil The accelerometer continuously monitors cone motions providing us continued 11 E 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 servosystems While the input signal is being sentto the amplifier which powers the driver acontinuous signal representing cone motion is being sent toacomparator circuit This circuit constantly adjusts for any deviation between the input signal and the subwoofer s output This self regulation results inextreme control over cone movement and very accurate low distortion sound Toprovide the power for driving this massive loudspeaker we incorporated an extremely efficient Class D switching amplifier One that is capable of running cool to the touch and providing 1250 watts RMS and 3000 watts peak power At typical listening levels the HGS 15X THX Ultra 2 produces less than 0 5 harmonic distortion with input signals extending to 20Hz and below Even at their maximum output lev
22. rts recommand s par le fabricant 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 Il 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 emp 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 particulierement 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 borne correspondante de la prise et pousser jusqu au fond 13 Nettoyage Pour le nettoyage de
23. sque 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 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 Il 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 Suivre les conseils Tous les conseils d utilisation et de fonctionnement doivent tre suivis la r gle 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 Pieds et Supports N utiliser que des pieds et suppo
24. t of2 Also with this unique configuration the distortion products are reduced by a factor of two overconventional single coil structures with dramatically improved cone control This driver alone would result in less distortion than any other non servo design We also designed this motor to be magnetically shielded from the start allow for convenient placement near the television monitors of home theater systems The unique push pull twin voice coil in these subwoofers is designed and builtin house onacustom built NC coil winding machine This unique machine winds this coilina way like none other There are two coils each with two layers would on the same former Two layers are first wound inside the former and then two layers on the outside This results in increased heat dissipation over normal designs which simply pile added layers on top of each other burying several layers beneath the surface We then utilized materials such as Polyimideresin impregnated fiberglass for the former This material is capable of withstan ding the extremely high temperatures 320 degrees C that can occur when driven by our powerful amplifiers This results in excellent long term power handling capabilities These speakers also feature ournew Multi Layer Resin Laminate cone system Thisnew cone starts with two layers of reinforced pulp fiber which are then heat pressed with a binding resin to form an extremely rigid cone structure This helps to reduce disto
25. the back panel of the subwoofer select the THX Subwoofer volume level and the Subsonic X Over and High Pass Crossover THX settings continued 5 IS Figure 1 Installation Using Line Level Inputs ee ran 2990 3 oooQ PRE AMP AMPLIFIER MAIN OUTPUTS MAIN INPUTS MAIN OUTPUTS LEFT RIGHT LEFT RIGHT RIGHT LEFT Subwooferoutputs The Velodyne subwoofer is designed to operate using the fullrange audio signal for input when using the built in crossover Some processors receivers have a subwoofer out jack that is internally filtered and designed to be used with a conventional amplifier and speaker In somerare 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 to a higher frequency suchas 120 Hz will restore maximum performance Tobypass 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 ontherear panel of the subwoofer and set tothe OUT position This will eliminate the internal crossover from the signal path Note Ifnot using an external performance 6 p Speaker Level Connection Figure 2 shows an easy way to connect your Velodyne subwoofer directly to your receiver or integrated ampli
26. tion woofer facing forward Using shipping orotherwise 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 subwoofer is magnetically shielded to reduce the amount of stray magnetic energy emitted from the speaker s motor structure This greatly increases flexibility when placing the unit close to video monitors as there is very little stray magnetism However this shielding may not be adequate incertain extremely sensitive installations Certain types of televisions are particularly sensitive to stray magnetic fields If your television produces distorted colors afterinstalling your subwoofer simply increase the distance between yourtelevision and the subwoofer until normal colorand operation isreturned Protection Circuitry Your new subwoofer is equipped with special protection circuitry to provide maximum performance with greatestreliability 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 oramplifier operates constantly without being audible under most situations In some extreme situations sustained high output levels such as prosound usage the unit may shut down momentarily The blue powerled may also blink rapidly Thisindicates operation of the thermal orundervoltage
27. y fitin the binding posts resulting in a poorconnection and possible short circuits Placement True subwoofers operate at extremely low frequencies which are primarily non directional Whileitisrecommended that the subwoofer be placed onthesame plane as the satellite speakers room and system conditions often dictate otherwise Keep in mindthatfrequency response and output level can be drastically influenced by placement depending on the acoustic properties of the listening room Typically the optimum location for a subwoofer is tucked away in acorner of your listening room This location will usually offer the greatest output levels and optimum low frequency extension The worst location fora subwoofer it typically far away from any walls and close tothe center of your room Avoidthese locations when possible When using a pair of Velodyne subwoofers in stereo itis preferable to place each subwoofer by the satellite of the same channel Caution This subwoofer has electronics builtinto the cabinet Do notplace the cabinet nextto sources of heatsuch 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 inany way thatcould resultin damaging theinsulation or wire 8 iS Regardless of where you install your Velodyne subwoofer it mustremain inan upright posi
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