This symbol found on the apparatus indicates hazards
Warning l To reduce the risk of fire or electrical shock,
arising from dangerous voltages.
do not expose this apparatus to rain or moisture.
This symbol found on the apparatus indicates the user
This symbol found on the apparatus indicates that
should read all safety statements found in the user
This symbol found on the apparatus indicates double
facility for electronic waste and not dosposed with
household waste.
Refer all servicing to qualified service personnel. Servicing
Read these instructions.
Keep these instructions.
is required when the apparatus has been damaged in any
Heed all warnings.
way, such as power-supply cord or plug is damaged, liquid
Follow all instructions.
has been spilled or objects have fallen into the apparatus,
Do not use this apparatus near water.
the apparatus has been exposed to rain or moisture, does
Clean only with dry cloth.
Do not block any ventilation openings. Install in accordance
the apparatus must be placed in a separate collection
not operate normally, or has been dropped.
with the manufacturer's instructions.
front, rear, and sides of the apparatus for sufficient ventila-
Do not install near any heat sources such as radiators, heat
tion. The ventilation should not be impeded by covering the
registers, stoves, or other apparatus (including amplifiers)
ventilation openings or placing on or around the apparatus
that produce heat.
Do not defeat the safety purpose of the polarized or
items such as newspapers, table-cloths, curtains, etc.
No open flame sources, such as lighted candles, should be
The apparatus shall not be exposed to dripping or splash-
grounding type plug. A polarized plug has two blades with
one wider than the other. A grounding-type plug has two
placed on the apparatus.
blades and a third grounding prong. The wide blade or
ing. No objects filled with liquids, such as vases, shall be
the third prong is provided for your safety. If the provided
placed on the apparatus.
plug does not fit into your outlet, consult an electrician for
replacement of the obsolete outlet.
be able to disconnect power from the apparatus.
where they exit from the apparatus.
Unplug this apparatus during lightning storms or when
unused for long periods of time.
To completely disconnect this apparatus from the AC Mains,
disconnect the power supply cord plug from the AC recep-
Only use attachments/accessories specified by the manufacturer.
Either the power inlet connector on the rear of the apparatus or the power plug at the wall must remain accessible, to
Protect the power cord from being walked on or pinched
particularly at plugs, convenience receptacles, and the point
Maintain a minimum distance of 2" (50mm) around the
The mains plug of the power supply cord shall remain readilyoperable.
CS Subl0
Frequency Range:
32 Hz - 150 Hz
Amplifier Power:
100 watts RMS
Bass Driver:
10" (254mm) DCD
Dimensions: (H x W x D)
15 x 15 x 15"
(381 x 381 x 381 mm)
Boston Acoustics continually strives to update and improve its products.
The specifications and construction details are subject to change without notice.
Boston Acoustics CS Subl 0 Powered Subwoofer
Thank you for choosing Boston Acoustics. The CS Sub 10 subwoofer incorporates high-quality components that produce the
famous Boston Sound. The subwoofer is ideally suited for use in a high-quality 5.1 channel home theater or stereo music
system. It is capable of impressive deep bass and high output from a remarkably compact enclosures. In addition, it features
BassTrac'", a proprietary Boston-designed circuit that tracks the input signal to the subwoofer and prevents its amplifier from
being driven into audible distortion. The benefit: the bass stays clean and strong at any listening level.
100 watts RMS
High-output, down firing and ported design
Deep Channel'" Design (DCD) woofers for more bass from less amplifier power
BassTrac" circuitry for tight, distortion-free bass at all output levels
Adjustable polarity, crossover and gain control
Ultra-rigid reinforced cabinetry
Unpacking the System
Carefully unpack the subwoofer. If there is any sign of damage from transit,
report it immediately to your dealer and/or delivery service. Keep the shipping
carton and packing materials for future use. Be sure to keep your purchase
receipt in a safe place, as it may be required for warranty purposes.
Placement Options
Place the subwoofer next to a wall or in a corner near your main speakers. The sound is typically best when the subwoofer is
within 15 feet (4.5m) of the main speakers. The sharp 24dB/octave crossover roll-off permits placement farther from the main
speakers if necessary. Since the ear is unable to localize the low frequencies of the subwoofer, the bass still appears to come
from the main speakers. Experimentation is key, however most positions in the room will work well.
The level of bass output from the subwoofer will vary at different positions in a room. When placed near walls, its loudness is
emphasized. Corner placement provides the most bass output. Placement completely away from walls may produce too little
bass. Regardless of the natural bass level within the room you will always have the ability to adjust the level of the subwoofer
from the built in volume control. If at any time you move the subwoofer be sure to check all of your settings.
IMPORTANT: Do not place the subwoofer where there is a chance of contact between the rear panel and drapes or furniture.
Position subwoofer
in corner for maximum
bass output
. j
After your speakers are properly placed, you are ready to wire your system.
NOTE: Power is always supplied to the subwoofer electronics unless it is unplugged or switched to the off position using the
power switch located on the rear panel. The auto-on circuitry only activates or deactivates the power amplifier. Make sure
your subwoofer and receiver are unplugged when making the connection.
Power: When plugging your subwoofer in be sure to use a wall outlet, or dedicated electrical outlet. Some receivers will
provide a switched outlet. Do not use this. These on board electrical outlets do not offer the amount of current or proper
isolation required by a power amplifier, such as the one in your amplifier.
Line level or LFE: On most systems use the line level in or the LFE input. These inputs accept the line-level signal from your
receiver's subwoofer output. Your receiver's manual should indicate which input is most appropriate.
Connecting the Subwoofer to Digital Home Theater Systems Using LFE
Digital 5.1,6.1 and 7.1 home theater electronics dedicate one channel (the ".1 ") to reproduce the special low-frequency (LFE)
information (such as explosions and thunder) contained in digitally-encoded soundtracks.
Select "subwoofer-yes"from your receiver's set-up menu. Hooked up this way, the receiver's amplifier is relieved of having to
reproduce the difficult low bass signals that can drive the receiver into audible distortion. In some cases it can also depend on
several other settings within a receiver. We recommend consulting your receiver manual for further assistance in this area.
Use an RCA cable (not included), as shown, to connect your digital receiver's LFE subwoofer output to the subwoofer.
Connect the other end to the LFE input.
CS Subl0 Amplifier
digital receiver
CItOSSOVllt 1Hz)
eO" e-yo
Connecting the Subwoofer to Stereo or Dolby@ Pro Logic@
For stereo or Dolby Pro Logic systems use the "sub out" connection from your receiver to the input on the subwoofer marked
"Left" and "Right".
CS Sub10 Amplifier
l . _' '1IWl
use either input
Connecting to Electronics Without a Subwoofer Output
If the electronic in your system does not have a subwoofer of LFE output you can connect the CS Sub 10 to a preamp output.
Use a stereo RCA cable (not included) to connect the preamp outputs to the Left and Right Line Level inputs.
CS Sub10 Amplifier
L.- _' 'OWl
Adjusting the Crossover Control
When using the Line Level inputs (not the LFE input) the subwoofer's built-in crossover is engaged. As a starting point, set the
crossover control on the subwoofer about 10Hz higher than the lower limit of your main speakers' bass response. Fine -tune
the crossover setting by ear for the smoothest blend with your main speakers. The best setting of the crossover control will
depend on speaker placement and personal preference.
Power On/Auto/Standby
Plug the subwoofer's AC cord into a wall outlet. Do not use the outlets on the back of the receiver. Set the power switch to
the desired setting.
OFF - The subwoofer is off and will not produce any sound. You may want to turn your subwoofer off if you will not be using
it for some time or wish to conserve electricity.
AUTO - The subwoofer will power on whenever a signal is detected. If no signal is detected after several minutes, it will automatically enter the Standby mode.
ON - The subwoofer is always on.
An LED indicator between the Power switch and the Polarity switch indicates what mode the subwoofer is in.
OFF - The subwoofer is off
RED - STANDBY (No signal detected, Amp Off)
GREEN - ON (Signal detected, Amp On)
The subwoofer will automatically enter the Standby mode after several minutes when no signal is detected from your system.
The subwoofer will then power ON instantly when a signal is detected.
Crossover Control
Adjusts the frequency of the low pass filter for the subwoofer. Note: This control is not active when using the LFE input jack.
Volume Control
Turn the subwoofer Volume control to the 11 o'clock position. If no sound emanates from the subwoofer, check the AC-line
cord, Power switch, and input cables. (Are the connectors on the cables making proper contact? Is the ACline cord connected to a "live" receptacle, is the subwoofer in either the Auto or On position 7)
Adjust the subwoofer Volume control until you hear a match between the main speaker and subwoofer. Bass response should
not overpower the room but rather be adjusted so there is a natural blend across the entire musical range.
Polarity Control
(0° or 180°): Selects regular (0 0 ) or inverted (180°) phase for the subwoofer. Set this switch to provide the fullest, most dynamic bass. The effect of phase will be most audible on low-frequency percussion instruments or music with a continuously
repeating bass line.
Maintenance and Service
The speaker enclosures may be cleaned using a soft cloth to remove fingerprints or to wipe off dust. All wiring connections
should be inspected and cleaned or remade at least once a year.
If a problem does occur, make sure that all connections are properly made, secure and clean. If a problem occurs in one
loudspeaker, rewire that speaker in a different location within the system. Should the problem persist then the problem is
within the speaker. If the speaker sounds fine in the new position it is a strong indication of a more in depth issue with the
electronics in the system. In the event that your speakers ever need service, contact your local Boston Acoustics dealer or
visit www.bostonacoustics.com/dealers for a list of dealers in your area.
Limited Warranty
Boston Acoustics warrants to the original purchaser of a CS Sub 10 subwoofer that it will be free of defects in materials and
workmanship in its mechanical parts for a period of 5 years from the date of purchase. The warranty period for the electrical
components is 1 year.
Your responsibilities are to install and use them according to the instructions supplied, to provide safe and secure transportation to an authorized Boston Acoustics service representative, and to present proof of purchase in the form of your sales slip
when requesting service.
Excluded from this warranty is damage that results from abuse, misuse, improper installation, accidents, shipping, or repairs/
modifications by anyone other than an authorized Boston Acoustics service representative.
This warranty is limited to the Boston Acoustics product and does not cover damage to any associated equipment. This
warranty does not cover the cost of removal or reinstallation. This warranty is void if the serial number has been removed or
defaced. This warranty gives you specific legal rights, and you may also have other rights which vary from state to state.
If Service Seems Necessary
First, contact the dealer from whom you purchased the product. If that is not possible, write to:
Boston Acoustics, Inc.
300 Jubilee Drive
Peabody, MA 01960 USA
Or contact us via e-mail at:
In Japan send e-mails to:
In Asia/Pacifi c countries send e-mails to:
We will promptly advise you of what action to take. If it is necessary to return your Boston subwoofer to the factory, please
ship it prepaid. Aher it has been repaired, we will return it freight prepaid in the United States and Canada.
For EU Customers Only
This symbol found on the product indicates that the product must not be disposed of with household waste.
Instead, it may be placed in a separate collection facility for electronic waste or returned to a retailer when purchasing similar product. The producer paid to recycle this product. Doing this contributes to reuse and recycling,
minimizes adverse effects on the environment and human health and avoids any fines for incorrect disposal.
30e) Jubilee
Peal)ody, /ViA 01960 US,!\
Boston, Boston Acoustics, and the Boston Acoustics logo are registered trademarks, and the B/A ellipse symbol is a trademark,
of Boston Acoustics, Inc. Dolby Digital, and Dolby Pro Logic are registered trademarks of Dolby laboratories. DTS is a registered
trademarks of DTS, Inc. Specifications are subject to change without notice. © 2008 Boston Acoustics, Inc. 142-003339-0