Velodyne Acoustics VA-1250X Manual De Usuario
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Product Features & Controls
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12" forward firing woofer with 2-1/2" voice coil & 70 oz. magnet
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15" downward firing passive radiator
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Built-in 250 watt (RMS) power amplifier
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Adjustable (40 to 120Hz) low-pass crossover with bypass option
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Selectable (80 or 100Hz) high-pass crossover
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Line-level inputs & outputs
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Speaker-level inputs & outputs with 5 way binding posts
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Signal sensing auto turn on/off with bypass option
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Variable volume control
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Variable phase control (0 to 180 degrees)
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Two position audio/video listening selection switch (+3dB, video)
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Response, 22 Hz to 120 Hz, +/- 3dB
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Magnetically shielded for video use
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Dual staggered low-pass crossover; 12dB/octave initial, 24dB/
octave ultimate
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Gain compression circuit to protect woofer from over excursion
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Input overload protection
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Thermal power sensing to protect woofer's voice coil from
burnout
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Power on LED (green)
Congratulations!
Congratulations on your purchase of a Velodyne VA-1250X sub-
woofer 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.
woofer 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.
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 for future
reference.
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 for future
reference.
continued. . .
Figure 2: Installation using speaker-level (from amplifier) inputs
INTEGRATED AMP / RECEIVER
MAIN OUTPUTS
(speaker-level)
(speaker-level)
SATELLITE SPEAKERS
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117 V
~
60 Hz
3 A
POWER
VIDEO/AUDIO
NORMAL/BYPASS
LOWPASS
CROSSOVER
AUTO / ON
MADE IN USA
LEFT
RIGHT
H I G H P A S S 1 0 0
8 0
OUT
IN
IN
OUT
OUT
IN
POWER
RISK OF ELECTRIC SHOCK
DO NOT OPEN
Velodyne Acoustics, Inc.
San Jose, CA 95112
Serial # Label
AVIS: RISQUE DE CHOC ELECTRIQUE-NE PAS OUVRIR
WARNING: TO REDUCE THE RISK OF
FIRE OR ELECTRIC SHOCK DO NOT EXPOSE
THIS APPLIANCE TO RAIN OR MOISTURE
CAUTION!
SERIES
Audio/Video Subwoofer System
VOLUME
0
9
4
5
1
2
3
6
7
8
10
120HZ
100HZ
70HZ
80HZ
90HZ
60HZ
40HZ
LOW-PASS
CROSSOVER
50HZ
110HZ
PHASE
0
O
90
O
180
O
60
O
30
O
120
O
150
O
Interconnect cables
When installing your VA-1250X using the line-level inputs/outputs,
you should use standard shielded phono cables. Always keep the
lines as short as practical to minimize noise.
you should use standard shielded phono cables. Always keep 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.
speaker cable to your subwoofer as you run to your satellites.
Placement
The VA-1250X operates at very low frequencies which are primarily
omni-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. Ask your dealer for help
in placement.
omni-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. Ask your dealer for help
in placement.