Velodyne Acoustics VA- 12 15X 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."
n•• • we just sat there marvelling at the sheer power and majesty of
~1 21 5xn

this ju nior varsity Velodyne. n
-Corey Greenberg
Owner's Manual
Home Theater Techn ology/February 1995
Off: Compa rison of five sub woofers
Face
Model Tested: VA - 10 12X
"...Velodyn es VA- 12 15X is a great subwoofer. It combin

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Congratulations! A~A Congratulations on your purchase of a Velodyne VA-1215XII sub­ ~ .... ~ woofer system. This system represents the state of the art in C aution accurate low frequency reproduction. Read and follow the instruc­ To redocethe riskof electricshock,00not rermvecover (orback).No user-serviceable partsinside. Refer ·tions below to insure safe and proper system operat ion. servicing toqualified service personnel. Th e lighting flash with arrowhead symbol is intended to ale

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• Gain com pression circuit to protect woofer from over You should set the crossover frequency to obtain a smooth and excursion seamless transition from the subwoofer to the main speakers in your system. If your main speakers are smaller units with limited low • Input overload protection frequency output,you may wish to choose a higherfrequency (such • Thermal power sensing to protect woofer's voice coil from burnout as 100-120hz) than you would with larger speakers which have •

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higher 100hz setting which will reduc e the low frequencies sent to A word about subwoofer outputs them. Larger speakers with greater low frequency output may be The Velodyne subwoofer is designed to operate using the full range able to handle the 80hz selli ng without strain. audio signal for input when using the built-in crossover. Some surround sound processors/receivers, including the Dolby AC3 sys­ Power switch tem with there .1 channel outputs, have a "subwoofer out" jack that The

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Figure 2: Installation using speaker-level (from amplifier) inputs system conditions often dictate otherwise. See your dealer for help ., / -_. in placement. N~~- Velodyne .'oGr&:t. "oo. ~ _A" When using a pair of VA-1215XII subwoofers in stereo, it is ~Ei=r II preferable to place each subwoofer adjacent to the satellite of the ~;t11 0;ft ~.~lliJt. _o: ~: G'==~ G. _ _ 10_ ....... same channel. EI ION"" •• •• 0 ~_.. I - ,,- I Keep in mind that frequency response and output level

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continuou sly with out any problem s. The unit is equ ipped with a SPECIFICATIONS VA-1215XII 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 Cabinet (inc!. legs) 18" x 19-1/8" x 20" (W,H,O) several minutes when there is no longer any signal at the inputs. Frequency Response 22hz - 120hz +/- 3 dB If you plan to leave the VA-1215XII unused for an extended period High Pass Crossover 80hz or 100hz (6 dB/oc