Velodyne Acoustics VA-806/907 User's Manual
Contents
1. 907 sub woofer in any other position for an extended period of time may result in damage to the unit not covered by warranty The VA 806 907 Subwoofer is magnetically shielded to reduce magnetic emission from its cabinet to increase the number of possible locations available for placement However this shielding may not be adequate for all installations Certain types of televisions are particularly sensitive to stray magnetic fields If your television produces distorted colors after installation of your VA 806 907 subwoofer simply increase the distance between your television and the VA 806 907 until normal color and operation is returned 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 the VA 806 907 subwoofer may be left on continuously without any problems The unit is equipped with a continued 8 i Figure 2 Installation using speaker level from amplifier inputs POET ee T R MAIN OUTPUTS 6 6 speaker level INTEGRATED AMP RECEIVER SATELLITE SPEAKERS Interconnect cables When installing your VA 806 907 using the line level inputs out puts you should use standard shielded phono cables Always kee2. If you know subwoofers you know about Velodyne It s safe to say that when it comes to woofin done right Velodyne s bigger models are probably the safest bet there is _ We just sat there marvelling at the sheer power and majesty of this junior varsity Velodyne Corey Greenberg Home Theater Technology February 1995 Face Off Comparison of five subwoofers Model Tested VA 1012X Velodyne 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 Printed on recycled paper P N 63 610 N 806 907 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 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 aPpons D Read Instructions All safety and operating instructions should be read before the subwoofer is opera
3. 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 OE ON The following conditions require service by a qualified technician 1 The power cord has become damaged 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 Congratulations Congratulations on your purchase of a Velodyne VA 806 907 subwoofer system This system represents the state of the art in accurate low frequency reproduction Read and follow the instruc tions 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 w
4. MAIN INPUTS MAIN OUTPUTS RIGHT LEFT RIGHT LEFT MAIN OUTPUTS RIGHT LEFT TO SATELLITE SPEAKERS 5 i A word about subwoofer outputs The Velodyne subwoofer is designed to operate using the full range audio signal for input when using the built in crossover Some surround sound processors receivers have a subwoofer out jack that is already crossed over and designed to be used with a conventional amplifier and speaker If this is the case you should set the low pass crossover to 150Hz Note If not using an external crossover you should use the built in crossover for optimal performance Subwoofer out from A V Processor From the low pass output of your signal processor Install into right or left RCA line in connector in the back of the subwoofer or use a Y connector adapter into both right and left RCA line in connectors in the back of the subwoofer Speaker level connection Figure 2 shows an easy way to connect your VA 806 907 subwoofer directly to your receiver or integrated amplifier When connected in this fashion your satellite speakers will be crossed over at 85hz which removes the lower bass from your speakers thus 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 Caution To avoid damage to your main amplifier be
5. 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 To prevent electrical 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 The power supply cord or plug has been damaged Objects have fallen or liquid has been spilled into the subwoofer The subwoofer has been exposed to rain 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 papgp All other servicing should be referred to qualified service personnel SPECIFICATIONS VA 806 VA 907 Cabinet incl legs Frequency Re
6. arranty card for future reference Product Features amp Controls Built in power amplifier Adjustable 50 to 150hz low pass crossover 85hz high pass crossover Line level inputs amp outputs Speaker level inputs amp outputs with spring clips Signal sensing auto turn on off with bypass option Variable volume control selectable phase control 0 or 180 degrees Magnetically shielded for video use continued 2 E Installation Your new VA 806 907 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 all installation procedures with system power turned off Inputs Your new VA 806 907 subwoofer is equipped with both speaker level and line level inputs Use the LINE IN jacks when connecting your subwoofer to a pre amp signal processor or line level cross over The FROM AMPLIFIER jacks connect directly to the speaker outputs of a integrated 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 LINE IN and FROM AMPLIFIER inputs simulta neously Volume control This control allows you to balance the output from the subwoofer to the main speakers in your system To adjust the volume start with the volume knob indicator at the MIN setting Wi
7. p the lines as short as practical to minimize noise When using the speaker level inputs outputs use the same quality speaker cable to your subwoofer as you run to your satellites Placement The VA 806 907 operates at very low frequencies which are prima rily non 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 See your dealer for help in placement 7 IS 150 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 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 frequency output With larger speakers you might start with this control set lower such as 80hz Phase adjustment This control allows you the ability to compensate for having the subwoofer in a different location than the main speakers Ideally you will have the sound from the subwoofer reach the listening position the same time as the sound from the main speakers However if the distance from the listening position to the subwoofer and the distance from listening position to the main speakers differs the sound from each will reach your ea
8. rs at a different time This control allows the signal to be delayed 180 degrees so the output of the subwoofer will blend in to that of your main speakers without any cancellation Auto turn on switch The auto turn on switch allows the user to bypass the auto turn on function if desired When set in the auto mode with main power on the VA 806 907 will turn itself on when an input signal is present If no signal is present after several minutes the unit will shut itself off When set in the on mode the auto turn on off function is bypassed and the unit will be on whenever the main power switch is on Power switch The master power switch is located on the right half of the unit This slide style switch is the main on off for the unit This switch should be set to up for on down for off continued 4 I 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 85hz which removes the lower bass from your amplifier and speakers thus 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 line in inputs A cs A NGC vis E PRE AMP AMPLIFIER
9. sponse High Pass Crossover Low Pass Crossover Amplifier Woofer Magnet Voice Coil Passive Radiator Inputs Outputs Warranty Weight 13 x12 8 x12 8 H W D 15 x15 x15 39hz 200hz 3 AB eee eee eeee eee eeeeeeeeeeeeeeeeeeees 85hz 6 AB OCtAVE oo eee cece eee eeeteeeeeeeeteeees 50hz 150hz 6 dB octave 24 dB ultimate Class A B 70 watts 200 watts peak Class A B 80 watts 200 watts peak 6 forward firing 8 foward firing 8 downward firing Line level amp speaker level cece eee Line level amp speaker level cccceceeeeeeeeee One year parts amp IADOF eeeeeeeereeeeeteeeeeee 38 Ibs approx 44 lbs approx 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 10 signal 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 VA 806 907 unused for an extended period of time we recommend that you turn off the unit by the master power switch on the rear panel Troubleshooting amp Service Before seeking service for your VA 806 907 subwoofer please re check all systems Following is a simple troubleshooting guide to assist you
10. 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 continued 6 IS
11. ted 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 should be used only with a cart or 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 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 subwoofer Power Cord Protection Power supply cords should be routed so that they
12. th your other speakers playing rotate the knob clockwise until you create a volume balance with your speakers In most cases this will be somewhere between the 10 o clock and 2 o clock positions on the dial Warning Turning the volume to MAX setting may dam age the subwoofer with certain source material 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 50 to 3 IBS When using a pair of VA 806 907 subwoofers in stereo it is preferable to place each subwoofer adjacent to the satellite of the same channel 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 VA 806 709 will sound louder when placed next to a wall or in a corner Caution The VA series subwoofers have amplifiers built into the cabinet Do not place the cabinet next to sources of heat such as furnace registers radiators etc The power cord should be routed in such a way that it will not be walked on pinched or compressed in any way Regardless of where you install your VA 806 907 subwoofer it must remain in an upright position passive radiator facing down ward Using shipping or otherwise storing the VA 806
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