Velodyne Acoustics DLS-4000 User's Manual
Contents
1. 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 All other servicing should be referred to qualified service personnel SPECIFICATIONS DLS 3500 DLS 3750 DLS 4000 Cabinet H W D 15 x 12 x 18 16 25 x 15 x 21 18 x 15 x21 Frequency Response 35Hz 140Hz 28Hz 120Hz 25Hz 120Hz 3 dB High Pass Crossover 6 dB octave slope Low Pass Crossover Amplifier Class A B Passive 85Hz 40Hz 120Hz 12 dB octave 24 dB ultimate 350 watts 160 watts RMS power Passive 85Hz 375 watts 175 watts RMS power 80Hz or 100Hz 400 watts 200 watts RMS power Woofer 8 forward firing 10 forward firing 12 forward firing 6 3 piston 8 2 piston 9 9 piston diameter diameter diameter Magnet 40 oz 40 oz 55 oz Voice Coil 2 two layer copper 2 four layer copper 2 four layer copper Inputs Line level and speaker level Outputs Line level and speaker level Warranty Two years parts and labor Weight 44 lbs approx 53 lbs approx 60 Ibs approx Specifications are subject to change without notice FOR YOUR RECORDS DEALER DATE PURCHASED SERIAL NOTE Please complete and return your warranty card within ten 10 days or Register ON LINE It s faster and easier www velodyne com 10 Troubleshooting and Service Before seeking s2. If you know subwoofers you know about Velodyne Corey Greenberg Home Theater Technology February 1995 It delivered room shaking bass and dramatically demonstrated the effectiveness of a single subwoofer placed to one side of the room Julian Hirsh Stereo Review January 1997 Notes were distinct not blurry Home Theater May 2002 Other Velodyne Subwoofer Products CHT Series SPL Series CHT 8 SPL 800 CHT 10 SPL 1000 CHT 12 SPL 1200 CHT 15 SPL 523 Satellites CHT Front Row System HGS Series Il VX 10 HGS 10 HGS 12 Deco System HGS 15 THX Ultra 2 Deco System HGS 18 THX Ultra 2 Deco Satellites Velodyne Acoustics Inc 345 Digital Drive Morgan Hill CA 95037 408 465 2800 voice 408 779 9227 fax http 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 63 DLS RevA 18APRO03 DLS 3500 DLS 3750 DLS 4000 Owner s Manual Velodyne Audio Video Subwoofer System 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 pers
3. have a steeper ultimate crossover slope To do this you can use both your processor s crossover and the one internal to the DLS subwoofer You should stagger the frequencies i e 120Hz sub 80Hz processor for best results To bypass the subwoofer s internal crossover when the unit is being fed alow pass signal from another crossover simply locate the switch marked SUBWOOFER DIRECT INTERNAL X OVER on the rear panel of the subwoofer and set to the SUBWOOFER DIRECT position This will eliminate the internal crossover from the signal path Note Tf not using an external crossover you should use the built in crossover for optimal performance When using a single channel input signal such as asurround sound processor s subwoofer out or LFE the auto on off circuit sensitivity will be affected When one input channel is used instead of two the unit will see lower signal levels present at the inputs This may cause the unit to turn off when listening at low volume levels If this occurs simply use a Y adapter available from most dealers to allow your processor s single sub line to be fed into both L amp R inputs This will make the unit turn on at lower signal levels Speaker level Connection Figure 2 shows an easy way to connect your DLS subwoofer directly to your receiver or integrated amplifier When connected in this fashion your satellite speakers will be crossed over at 80 100Hz which removes the lower bass from your speak
4. improves the subwoofer s perfor mance by limiting audible amplifier distortion and controlling the driver excursion The result is a subwoofer that reproduces music and home theater with a fraction of the audible distortion found in lesser products This exclusive DLS technology increases the detail and definition of your subwoofer without sacrificing output or dynamic impact Read and follow the instructions below 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 equipment 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 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 Record the serial number in the space provided on the warranty card or log onto www velodyne com Product Features and Controls Built in 160 watt RMS power amplifier DLS 3500 Built in 175 watt RMS power amplifier DLS 3750 Built in 200 watt RMS power amplifier DLS 4000 Distortion Limiting System DLS limits amplifier distortion and controls driver excursion Subwoofer Direct switchable crossover bypass Adjustable 40 to
5. minimum distance of 4 to 5 feet from your TV to the subwoofer will be adequate to avoid any magnetic interference 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 Care of Your DLS 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 the subwoofer may be left on continuously without any problems The unit is equipped with a signal sensing circuit 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 unit unused for an extended period of time we recommend that you turn off the unit by the master power switch on the rear panel continued 8 E Caution To avoid damage to your main amplifier be sure to maintain correct polarity when making all connections The correct method is to connect red positive to red and black negative to
6. the main speakers and subwoofer Low pass crossover Both sets of inputs sum the left and right channels together and the resulting signal is passed 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 120 Hz 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 yoursystem If your 3 im Placement True subwoofers operate at extremely low frequencies which are primarily omni directional While itis recommended that the subwoofers 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 on the acoustic properties of the listening room Typically the optimum location for asubwoofer 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 for a subwoofer is 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 itis preferable to place each subwoofer by the satellite of the same channel Typically a
7. 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 for on up 0 for off down continued 4 im 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 better job reproducing high frequencies By utilizing this method you will have a bi amplified system gaining improved power and headroom for your system Figure 1 Installation using line level RCA Phono jack inputs TO SATELLITE SPEAKERS Velodyne DLS Series INPUTS RIGHT LEFT OUTPUTS e RIGHT LEFT AMPLIFIER PRE AMP MAIN OUTPUTS RIGHT LEFT ES Subwoofer outputs Your DLS subwoofer is designed to operate using the full range audio signal for input when using the built in crossover Many home theater processors receivers Dolby Digital DTS THX have a subwoofer out jack that is internally filtered and designed to be used with a powered subwoofer In these installations you may bypass the internal crossover in either the processor or your DLS subwoofer In some installations it may be beneficial to
8. 120Hz low pass crossover Selectable 80 or 100Hz high pass crossover DLS 4000 85 Hzhigh pass crossover DLS 3500 DLS 3750 continued 2 I Line level inputs and outputs Speaker level inputs and outputs Signal sensing auto turn on off with bypass option Variable volume control Selectable phase control 0 or 180 degrees Dual staggered low pass crossover 12dB octave initial 24dB octave ultimate Installation Your new DLS subwoofer system 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 allinstallation procedures with system power turned off Inputs Your new subwoofer is equipped with both speaker level and line level inputs Use the RCA Phono type INPUT jacks when connecting your subwoofer to a pre amp signal processor or line level crossover The SPEAKER LEVEL INPUT jacks connect directly to the speaker outputs of aintegrated amplifier or receiver Your amplifier section will notice no additional loading effects when you use these inputs because of their high impedance Note Do not use both the RCA Phono INPUT connections and SPEAKER LEVEL INPUT connections simultaneously Volume control This control allows you to balance the output from the subwoofer to the main speakers in your system This control should be set to achieve similar volume level from both
9. black Be sure that all connections are tight and that there are no loose strands or frayed wires Figure 2 Installation using SPEAKER LEVEL INPUTS from amplifier INTEGRATED AMP RECEIVER MAIN OUTPUTS o speaker level rower on Baro aa O Velodyne DLS Series SUBWOOFER VOUME el 00 EN m SATELLITE SPEAKERS Interconnect Cables When installing your new DLS subwooferusing 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 Wedo 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 ofextremely large size are typically not required Extremely large gauge wire may not properly fit in the binding posts resulting in a poor connection and possible short circuits main speakers are smaller units with limited low frequency output you may wish to choose ahigher 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 Subwoofer Direct A bypass switch is als
10. ers 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 continued 6 im
11. ervice for your subwoofer please re check all systems 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 6 Ifunithas been running at high levels one of the protection circuits may be engaged 7 Has the built in amplifier overheated ABR WN Fe If the protection circuitry is active the unit may cycle on and off until operating parameters return to normal 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 Theunit does not appear to operate normally or exhibits amarked change in performance The unit has been exposed to water 4 Some part of the cabinet or circuitry is physically damaged W Thank you for purchasing a Velodyne DLS Subwoofer Congratulations Congratulations on your purchase of a Velodyne DLS subwoofer system This system represents the state of the art in low frequency reproduction Yournew subwoofer features Velodyne s exclusive DLS Distortion Limit ing System technology that significantly
12. h 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 subwoofer 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 Caution Topreventelectrical shock match wide blade of plug to wide slot fully inserted Attention Pour eviter les chocs electriques introduire lame la plus large de la fiche dans la borne correspondante de la prise et pousser jusqu au fond 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 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 Cc The subwoofer has been exposed to rain d The subwoofer does not appear to operate normally or exhibits a marked change in performance e
13. o 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 and 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 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 automatically when an audio signal is present If no signal is present for approximately 10 minutes the unit will switch to standby mode While in standby mode your subwoofer will draw very minimal power Leaving the switch in the on position can disable this function High pass crossover switch This switch selects the frequency for the high pass crossover This crossover is functional on both line and speaker level outputs Smaller speakers with limited low frequency output 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
14. ons 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 aRoON gt D 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 a cartor stand recommended by the manufacturer Wall or Ceiling Mounting The subwoofer 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 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 placed in a built in installation such as a bookcase or cabinet that may impede the flow of air through the ventilation openings Heat The subwoofer should be situated away from heat sources suc
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