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PL900 SPEAKER SYSTEM:
Contents of Carton:
Subwoofer Speaker
Your AR Subwoofer delivers powerful, deep bass sound output for a natural, life-
like sonic experience. Please follow the directions in this manual to achieve the
best performance from your system.
The hook-up and operation of the Subwoofer is the same for both a Home
Theater surround sound system or a stereo music system. The Subwoofer has its
own built-in amplifier, so it works with any sound system. The Subwoofer's own
crossover network sends bass-only signals to the Subwoofer's built-in amplifier.
This lets the Subwoofer add extra bass to the out put from your other speakers.
For simplicity, we call your Home Theater system's or music system's main
speakers the Front speakers. We call your AV receiver, stereo receiver, or
integrated amplifier the Receiver.
Placement
Your AR Subwoofer must sit on the floor, preferably in a corner, to work properly.
The floor and corner are actually a part of the Subwoofer's design. Place your
Subwoofer in the corner nearest your system's electronic components to keep
wire or cable runs short.
Controls & Connections
POWER CORD: Plug the power cord into an AC wall outlet or other AC outlet
capable of supplying at least 200 Watts.
POWER SWITCH: Turns the AC supply completely OFF,ON sets the Subwoofer to
AUTO ON operation. In AUTO ON, the Subwoofer is in standby mode until it
detects an audio signal input, then the Subwoofer turns on automatically. A few
minutes after audio input signals cease, the Subwoofer automatically returns to
standby mode.
POWER INDICATOR LED: This is inside the front AR logo.
FUSE 250V 3A: This fuse protects against internal and external faults. If the
POWER switch is ON and the power indicator LED is unlit, unplug the power cord
from the AC outlet and check the fuse by unscrewing the center piece from the
holder. IMPORTANT- If the fuse is blown, replace it only with a fuse of the same
type and current rating.
L, R SPEAKER-IN TERMINALS: See Connection Option 1. These terminals are
for making connections using speaker wire. If you use this option, do not use
Option 2.
LFE INPUT JACK: Allows direct connection from the receiver with an internal
low pass filter. This connection bypasses the subwoofer internal crossover
circuitry. Use only with appropriate Surround
Sound processor / amplifier.
LFE OUTPUT JACK: This connector is connected internally to the LFE input
jack and allows you to loop the LFE input signal out to another LFE input on an
additional AR powered loudspeaker or subwoofer.
LINE IN JACKS: See Connection Option 2. These jacks are for input
connection using audio cables. If you use this option, do not use Option 1.
LOW PASS FREQUENCY CONTROL: Adjusts the upper frequency limit for
audio signals going to the subwoofer amplifier. This control helps you adjust the
system's tonal balance.
LEVEL CONTROL: Balances the loudness of the Subwoofer relative to the Front
speakers and compensates for room effects on the Subwoofer's output.
PHASE SWITCH: The Phase Switch controls the phase of the Subwoofer's
output relative to the front speakers. Listen carefully to the sound quality while
playing a CD with low bass. Select the position of the switch that produces the
fullest deep bass without boominess. You may need to readjust the Volume and
Crossover controls after setting the Phase Switch.
Connecting your Subwoofer
IMPORTANT: When you make connections, make sure that the power switches
of all components, including the Subwoofer, are OFF.
Speaker wire: Typical speaker wire has a pair of separate conductors with
insulating jackets that are molded together. We recommend that you use 16-
gauge speaker wire for hooking your Receiver to your Front speakers. To make
connections to the Subwoofer in parallel with the Front speakers easier, the
speaker wire connecting the Receiver to the Subwoofer can be smaller (higher
gauge number), since the Subwoofer does not draw large amounts of power
through these wires.
3/8"
(9mm)
+ to red terminal
bare wire
(color stripe, ridges or cooper)
- to black terminal
(plain or silver)
Polarity All speakers in a system must be connected with the same polarity.
Speaker wire is marked for polarity so that you can identify which wire in the pair
is which. Polarity is shown by a color stripe on the insulation, by ridges molded
into the insulation, or by the colors of the wires – one copper and one silver. Strip
the insulation from speaker wire ends to reveal the bare conductors before
connecting to Receiver, Subwoofer or Speaker terminals.
IMPORTANT: Always connect the red (+) terminal on the Receiver to the red (+)
terminal on the Subwoofer, and the black (-) terminal on the Receiver to the black
(-) terminal on the Subwoofer. The same is true for hooking the Receiver outputs
to the Front speakers: red (+)to red (+), and black (-) to black (-).
IMPORTANT: Use Option 1 or Option 2, not both.
OPTION 1. Connection with speaker wire
RECEIVER
FRONT LEFT
FRONT RIGHT
SPEAKER
SPEAKER
SUBWOOFER
Connect speaker wires from the Receiver's front left and right speaker outputs
to the Subwoofer's left and right Speaker In terminals, as well as the left and
right front speakers.
OPTION 2. Connection with audio cable
LEFT SPEAKER
RIGHT SPEAKER
RECEIVER
SUBWOOFER
This connection uses a low level stereo sub signal. This is usually found on
receivers equipped with Dolby
®
Digital decoding. Locate the subwoofer outputs
on the back of your receiver. Using a standard RCA cable connect the subwoofer
output on the back of your receiver to the Line-In on the back of the sub-woofer.
If your receiver has a mono sub output , connect the RCA cable to the Left Input
on your subwoofer.
Adjusting the Subwoofer controls
• Play a program on your system. Use a Dolby
®
Digital or Dolby
®
Pro-Logic signal,
or a music CD. Adjust the Receiver's volume control for a comfortable sound level
from the system speakers.
•Increase the Subwoofer's LEVEL Control setting clockwise, so that you hear the
deep bass. Adjust the control for a natural, musical balance that has plenty of
deep bass sound when it's actually present in the music.
Listen carefully to bass voices and, if needed, adjust the LOW PASS
FREQUENCY Control so that they sound natural. Setting the frequency too high
will make deep voices sound excessively "chesty" or resonant and will give the
upper bass in music a "one-note" quality. Setting the frequency too low will make
deep voices sound "thin" and will give the music a lack of "warmth."
PHASE SWITCH controls the phase of the Subwoofer's output relative to the
The
front speakers. Listen carefully to the sound quality while playing a CD with low
bass. Select the position of the switch that produces the fullest deep bass without
boominess. You may need to readjust the Volume and Crossover controls after
setting the Phase Switch.
• Make fine adjustments until the program has satisfying and natural sound quality
on both bass voices and music.
Troubleshooting
SUBWOOFER POWER INDICATOR LED DOES NOT LIGHT
• Check the AC outlet the Subwoofer is plugged into to be sure that it is live. You
can use a tester or plug in a lamp to check it.
• If the AC outlet is live, either the power cord or Subwoofer has a problem. Unplug
the power cord from the AC outlet and check the fuse by unscrewing the center
piece from the holder. If it is blown, replace the fuse only with a fuse of the same
type and rating. If this doesn't help, take the Subwoofer to your dealer for service
NO SOUND FROM THE FRONT SPEAKERS
• Be sure the Receiver and Subwoofer POWER switches are in the ON positions.
• Check the Receiver's Volume Control setting — if it is all the way down, there
won't be any sound.
• Check that the Receiver's Input Selector is set to an active source of audio
signals and that a Tape Monitor Loop is not engaged.
• Be sure that the Receiver's Speaker Selector switch is turned on to the terminals
[A or B, 1 or 2] that you have your Front speakers connected to. If the Receiver has
a headphone jack, you can use headphones to check the Receiver for output.
• Check the wires and connections from the Receiver's Front Speaker Output
terminals to the Subwoofer's SPEAKER-IN terminals.
• Try removing the Subwoofer from the system, leaving your Front speakers
connected to the Receiver. If there still is no sound, take the Receiver to your
dealer for service.
NO SOUND FROM THE SUBWOOFER
• First, be sure there is sound from the Front speakers and that the Receiver is
working correctly as outlined above.
•Check the Subwoofer's LEVEL control. If it is all the way counterclockwise, there
may be no sound.
• The Subwoofer only reproduces deep bass sound. If the program has no deep
bass, the Subwoofer will not make any sound. Play a program with plenty of bass,
such as jazz or rock music, or an action movie.
• If everything else checks OK, take the Subwoofer to your dealer for service -
THERE ARE NO USER-SERVICEABLE PARTS INSIDE.
Specifications - PL900 Subwoofer
Driver Complement and Enclosure
10" (25.4cm) Woofer in a tuned-port enclosure
Frequency Response: 23Hz-150Hz
Amplification Power output: 175 Watts RMS into 4 Ohms
Total Harmonic Distortion: 10% @ 175 Watts output
Crossover Frequency Variable: 50-150Hz
Special Features: Variable-Gain, Phase Switch
Finish: Black ash with Aluninum front baffle
Dimensions (HxWxD):
17.75" x 10" x 18.5"
Weight: 42 lbs (19.05kg)
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