Velodyne Acoustics VA-806/907 دليل المستخدم

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"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
806/907
this junior varsity Velodyne."
-Corey Greenberg
Owner's Manual
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
408.43

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SPECIFICATIONS VA-806 VA-907 CAUTION RISK OF ELECTRIC SHOCK Cabinet (incl. legs) 13"x12.8"x12.8" (H,W,D) 15"x15"x15" DO NOT OPEN Frequency Response 39hz-200hz +/- 3 dB............................................... Caution To reduce the risk of electric shock, do not remove cover (or back). No user-serviceable parts inside. High Pass Crossover 85hz (6 dB/octave) ................................................ Refer servicing to qualified service personnel. Low Pass Crossover 50hz - 150hz (6 dB/

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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. Congratulations! If you plan to leave the VA-806/907 unused for an extended period Congratulations on your purchase of a Velodyne VA-806/907 of time, we recommend that you turn off the unit by the master power subwoofer system. This system represents the state of the art in switch on the rear panel

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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. Installation Keep in mind that frequency response and output level can be Your new VA-806/907 subwoofer system provides for a number of drastically influenced by placement depending on the acoustic installation options. Read all the installation information below in properties of the listening room. Typically the VA-806/709 will order to determine which in

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Figure 2: Installation using speaker-level (from amplifier) inputs 150 hz. The subwoofer's response will begin rolling off above the frequency you set this control to. PHASE FREQUENCY VOLUME 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 speaker

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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 Line-level connection conventional amplifier and speaker. If this is the case, you should set the low pass crossover to 150Hz. Figure 1 shows connection to a pre-amplifier's main outputs and returning them to your a