Your Acoustic Research Subwoofer delivers powerful, deep bass sound
output for a natural, life-like sonic experience. Please follow the direc-
tions in this manual to achieve the best performance from your system.
The hook-up and operation of the Subwoofer is the same for 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 output 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.
Your AR subwoofer should be placed on the floor.You should be aware
that the closer the subwoofer is placed to the wall,the more pronounced
the bass will become,with maximum bass being achieved with the sub-
woofer being placed in a corner.
To optimize you system's electronic components,try and keep all speaker
wire and cables as short as possible.
SUBWOOFER 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 com-
pletely OFF or 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 automati-
cally. A few minutes after audio input signals
cease, the Subwoofer automatically returns to
POWER INDICATOR LEDYour AR Subwoofer
has 2 LED indicators. The Power LED indicator
is located on the amplifier on the rear. This
LED is unlit when the AC power switch is OFF.
It glows red when the Subwoofer is in standby
mode and green when the Subwoofer is on.
The Signal indicator LED is Blue and is located
next to the AR logo on the front of the sub-
woofer. This LED is lit when there is an audio
FUSE 250V 3AThis 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. IMPORTANTIf 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 wirer. If you
use this option, do not use Option 2.
L,R INPUT JACKS- See Connection Option 2
These jacks are for input connections using audio cables. If your receiv-
er has a mono sub out, you may use either input on your new AR sub-
woofer. If you use this option, do not use Option 1.
LFE INPUT JACK-Allows direct connection from the
amplifier/processor 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.LOW PASS FREQUENCY CONTROL Adjusts the upper frequency limit
for audio signals going to the Subwoofer amplifier. This control helps
you adjust the systems tonal balance.
LEVEL CONTROL Balances the loudness of the Subwoofer relative to
the Front speakers and compensates for room effects on the Subwoofer’s
PHASE SWITCHThe 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 Level and Low Pass Frequency controls after
setting the Phase Switch.
CONNECTING YOU SUBWOOFER
IMPORTANT When you make connections. make sure that the power
switches of all components, including the Subwoofer, are OFF.
AUDIO CABLESIf you are connecting the Subwoofer into a system
made up of separate components (preamp & power amps), you will need
audio cables long enough to reach the Subwoofer from the preamplifier
and the power amplifier.
SPEAKER WIRETypical 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.
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 strip on the
insulation, by ridged 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
IMPORTANT USE OPTION 1 OR OPTION 2, NOT BOTH .
OPTION 1 – CONNECTION WITH SPEAKER WIRE
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
SPEAKER LEVEL IN
+– 50HZ 150HZ
RISK OF ELECTRIC SHOCK
DO NOT OPEN
WARNING: SHOCK HAZARD-DO NOT OPEN
AVIS: RISQUE DE CHOC ELETRIQUE-NE
PAS OUVRIRCAUTION !
TO REDUCE THE RISK OF FIRE,
REPLACE WITH ONLY THE SAME
TYPE AND RATING OF FUSE.
UTILISER UN FUSIBLE DE
when servicing use only
identical replacement parts.
SUBWOOFER ADJUSTMENT & USE
Subwoofer initial control settings
• Set the LOW PASS FREQUENCY Control to its center position.
• Set the LEVEL Control fully counterclockwise to MIN. You’ll reset
this control after you make other adjustments.
Adjusting the Subwoofer controls
• Play a program on your system. For the following adjustments, use
the Dolby ProLogic Normal surround mode and select a movie that
has a Dolby Surround soundtrack with a lot of music, or play 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 is 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 music a lack of “warmth”.
• Make fine adjustments until the program has satisfying and natural
sound quality on both bass voices and music.
Setting the Phase Switch
The PHASE switch controls the phase of the Subwoofers output rela-
tive to that of the Front speakers. In many installations, it will be dif-
ficult to tell which switch setting is the correct one. Listen carefully
to the sound quality while someone else toggles the switch between
its two positions. The position that produces the fullest deep bass
and the warmest bass and mid-bass sound is the correct one. You
may need to readjust the SUBWOOFER OUT LEVEL and SUBWOOFER
CROSSOVER FREQUENCY controls after setting this switch.
Subwoofer POWER Indicator LED does not light
• Check that the Subwoofer’s POWER Switch is in the AUTO ON position.
• If the POWER Switch is in the AUTO ON position, check the AC out
let 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 – THERE
ARE NO USER SERVICEABLE PARTS INSIDE.
No sound from the Front speakers.
• Be sure the Receiver and Subwoofer POWER Switches are in the On
• 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 counter
clockwise, 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
• If everything else checks OK, take the Subwoofer to your dealer for
service - THERE ARE NO USER SERVICEABLE PARTS INSIDE.
Driver Complement and Enclosure
8” long throw woofer in a down-firing slot-loaded configuration
with a front firing 8" passive radiator
28Hz to 150Hz
Power output: 150 Watts RMS, LFE In/Out
Total Harmonic Distortion
10% @ 150 Watts output
Crossover frequency (-3 dB)
50 Hz @ MIN 150 Hz @ MAX
2 pair of 5-way gold binding posts for high level in
1 pair of RCA inputs for low level input
RCA LFE input and output jacks
Finish: Black ash laminate
Dimensions (HxWxD): 13.5" x 10.25" x 13.5", (34.3cm x 26cm x 34.3cm)
Weight: 26lbs (11.9kgs)
This warranty remains in effect for five years from date of purchase for
speaker components, one year on subwoofer amplifiers and electronic com-
This warranty protects the original owner providing that the product has
been purchased from an authorized Acoustic Research dealer in the United
States. The original bill of sale must be presented whenever warranty serv-
ice is required. For warranty service outside the United States, contact the
authorized Acoustic Research distributor in the country where the product
Except as specified below, this warranty covers all defects in material and
workmanship. The following are not covered: Damage caused by accident,
misuse, abuse, product modification or neglect, damage occurring during
shipment, damage from failure to follow instructions contained in the own-
ers manual, damage resulting from the performance of repairs by someone
not authorized by Acoustic Research, or any claims based on misrepresen-
tations by the seller. This warranty does not cover incidental or consequen-
tial damages. It does not cover the cost of removing or reinstalling the unit.
This warranty is void if the serial number has been removed or defaced.
This warranty gives you specific legal rights. You may also have other rights
which vary from state to state. Some states do not allow the exclusion or
limitation of incidental or consequential damages or limitations on how long
an implied warranty lasts, so the above may not apply to you.
HOW TO OBTAIN SERVICE
Please call us at (800) 225-9847
We will promptly advise you of what action to take. We may direct you to
an authorized Acoustic Research Service Center or ask you to send your
speaker to the factory for repair. You will need to present the original bill of
sale to establish the date of purchase. PLEASE DO NOT SHIP YOUR
ACOUSTIC RESEARCH PRODUCT FOR REPAIR WITHOUT PRIOR
AUTHORIZATION. PLEASE DO NOT RETURN PRODUCT TO THE
ABOVE ADDRESS, IT IS NOT A SERVICE LOCATION.You are respon-
sible for transporting your product for repair and for payment of any initial
shipping charges. However, we will pay the return shipping charges if the
repairs are covered under warranty.
-TO BLACK TERMINAL
(plain or silver) +TO RED TERMINAL
(color stripe ridges