User manual VELODYNE VMS-8 REV A
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Manual abstract: user guide VELODYNE VMS-8REV A
Detailed instructions for use are in the User's Guide.
[. . . ] Record the serial number in the space provided on page 12 for future reference. Product Features · A single driver consisting of: - 8" (6. 5" piston diameter) driver with 2. 5" high-temp voice coil and 204 ounce magnet structure · Built-in 2000 watts Dynamic/1000 watts RMS high efficiency Class D amplifier · Adjustable (40 to 120 Hz) low-pass crossover (defeatable) · Line-level (RCA) inputs and outputs · LFE Input · Speaker-level inputs with five way binding post connections · Signal sensing auto turn on/off (defeatable) · Variable volume control · Selectable phase control (0° or 180°) · Multiple staggered low-pass crossovers; 12 dB/octave initial, 48 dB/octave ultimate · Driver Displacement Control circuit prevents over excursion and amp clipping · Blue power indicator LED · High-excursion EPDM rubber surround · Oversized spider for linearity at high excursion
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VMS User's Manual
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P r e p a r e f o r I n s ta l l a t i o n
Your new Velodyne 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 to prevent possible damage.
Placement
The first step in installing your new VMS is to determine where it will be placed in the room. [. . . ] Simply move the switch to SUBWOOFER DIRECT to disengage the built-in crossover. For all other installations which do not have a separate electronic crossover, we recommend you leave the switch set to INTERNAL X-OVER to provide optimum performance.
A u t o Tu r n o n F u n c t i o n
With this function in the "auto" position, your subwoofer can be safely left with the main power switched 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. This function can be disabled by leaving the switch in the "inactive" position. Warning: If the Sub-Out channel signal level from your receiver is too weak, this feature will not operate properly. See VOLUME CONTROL section on previous page.
Power Switch
The master power switch is located on the lower half of 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.
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 that is internally filtered and designed to be used with a conventional amplifier and 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 to a higher frequency (such as 120 Hz) will restore maximum performance. To bypass the subwoofer's internal crossover when the unit is being fed a filtered signal from another crossover, simply locate the switch marked INTERNAL X-OVER/SUBWOOFER DIRECT on the rear panel of the subwoofer and set to the SUBWOOFER DIRECT position. Note: If not using an external crossover, you should use the built-in crossover for optimal performance.
Line-Level Connection - Option A
Figure 1 shows connection from your home theater receiver to the LFE input on the back of your subwoofer. When the subwoofer is installed in this fashion, all of the low frequency information from your "LFE Out" or "Subwoofer Out" on the back of your receiver will pass into your Velodyne subwoofer. This connection is the most common connection method when using your subwoofer with a 5. 1 receiver. (Cable needed: 1 mono RCA cable. )
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VMS User's Manual
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Figure 1. Installation Using LFE Line-Level Inputs
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Note: If not using an external crossover, you should use the built-in crossover for optimal performance. When using a single channel input (such as a surround 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. [. . . ] The VELODYNE products are not intended for professional or commercial use and VELODYNE is not responsible for damage resulting from such use. The VELODYNE product warranty is limited to units that are purchased from authorized VELODYNE dealers and finalized within authorized dealer locations. TO OBTAIN SERVICE Information regarding service may be obtained from the dealer from whom you purchased the unit, or by contacting VELODYNE customer service. Warranty service must be performed by a VELODYNE factory authorized service representative within the warranty period set forth above. [. . . ]
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