Velodyne Acoustics HGS-15 THX ユーザーズマニュアル

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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 80/100Hz
which removes the lower bass from your amplifier and speakers, 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.
THX Ultra 2 Operation:
On  the  back  panel  of  the  subwoofer  select  the  THX  Subwoofer  volume  level  and  the
Subsonic, X-Over, and High-Pass Crossover THX settings.
6
7
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 low pass signal from another crossover, simply locate the switch marked
X-over, OUT - IN on the rear panel of the subwoofer and set to the OUT position. This
will eliminate the internal crossover from the signal path. 
 Note: If not using an external
crossover, you should use the built-in crossover for optimal performance.
Figure 1: Installation using line-level inputs
AMPLIFIER
MAIN OUTPUTS
RIGHT       LEFT
TO SATELLITE SPEAKERS
PRE-AMP
MAIN OUTPUTS
MAIN  INPUTS
LEFT
RIGHT
RIGHT
LEFT
Figure 2: Installation using speaker-level (from amplifier) inputs
INTEGRATED AMP / RECEIVER
SATELLITE SPEAKERS
MAIN OUTPUTS
(speaker-level)
BALANCED
INPUT (LEFT)
COVERED UNDER ONE OR MORE OF THE
FOLLOWING U.S. PATENTS # 4,727,584 &
# 4,573,189; OTHER PATENTS PENDING.
117 V 
~
60 Hz
10A
POWER
EXTERNAL
REMOTE
RISK OF ELECTRIC SHOCK
DO NOT OPEN
CAUTION
RISQUE DE CHOC ELECTRIQUE-NE PAS OUVRIR
AVIS:
ULTRA-EFFICIENT  CLASS D AMP
380 oz. MOTOR STRUCTURE
VIDEO SHIELDED
PATENTED HIGH GAIN SERVO
1250 WATTS RMS/3000PEAK
TANDEM 3” PUSH-PULL MOTORS
HIGH-GAIN
SERVO

RIGHT
SPEAKER LEVEL
OUTPUT
INPUT
LEFT
SPEAKER LEVEL
OUTPUT
INPUT
INPUT
OUTPUT
LINE LEVEL
LOW-PASS
CROSSOVER
80 Hz
120 Hz
40 Hz
BALANCED
INPUT(RIGHT)
PHASE
POWER
X-OVER
SUBSONIC
Serial # Label
VELODYNE ACOUSTICS, INC.
WARNING: TO REDUCE THE RISK OF
FIRE OR ELECTRIC SHOCK DO NOT EXPOSE
THIS APPLIANCE TO RAIN OR MOISTURE
SUBWOOFER
VOLUME
MIN
MAX
15Hz - 35Hz
OUT - IN
AUTO - ON
°
 - 180 
°
100 Hz
HIGH-PASS
CROSSOVER
80 Hz
BALANCED
INPUT (LEFT)
COVERED UNDER ONE OR MORE OF THE
FOLLOWING U.S. PATENTS # 4,727,584 &
# 4,573,189; OTHER PATENTS PENDING.
117 V 
~
60 Hz
10A
POWER
EXTERNAL
REMOTE
RISK OF ELECTRIC SHOCK
DO NOT OPEN
CAUTION
RISQUE DE CHOC ELECTRIQUE-NE PAS OUVRIR
AVIS:
ULTRA-EFFICIENT  CLASS D AMP
380 oz. MOTOR STRUCTURE
VIDEO SHIELDED
PATENTED HIGH GAIN SERVO
1250 WATTS RMS/3000PEAK
TANDEM 3” PUSH-PULL MOTORS
HIGH-GAIN
SERVO

RIGHT
SPEAKER LEVEL
OUTPUT
INPUT
LEFT
SPEAKER LEVEL
OUTPUT
INPUT
INPUT
OUTPUT
LINE LEVEL
LOW-PASS
CROSSOVER
80 Hz
120 Hz
40 Hz
BALANCED
INPUT(RIGHT)
PHASE
POWER
X-OVER
SUBSONIC
Serial # Label
VELODYNE ACOUSTICS, INC.
WARNING: TO REDUCE THE RISK OF
FIRE OR ELECTRIC SHOCK DO NOT EXPOSE
THIS APPLIANCE TO RAIN OR MOISTURE
SUBWOOFER
VOLUME
MIN
MAX
15Hz - 35Hz
OUT - IN
AUTO - ON
°
 - 180 
°
100 Hz
HIGH-PASS
CROSSOVER
80 Hz