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8900 Keystone Crossing, Suite 1220
Indianapolis, Indiana 46240
1.800.KLIPSCH •www.klipsch.com
Make sure you return your
warranty card so that we may
keep you up-to-date on new
Klipsch products and promotions. As always, if you have
any questions, contact your
local authorized Klipsch dealer.
For your records:
Model
Serial Number
Date Purchased
Dealer Name
193104
7M0999
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LF-10 and LF-12 Subwoofers
O w n e r ’s Manual & Wa rranty
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CAUTION:
RISK OF ELECTRIC SHOCK!
DO NOT OPEN!
!
!
!
!
CAUTION! To reduce the risk of electric shock and fire, do not remove the cover or back plate of this
device. There are no user-serviceable parts inside. Refer repairs to a Klipsch authorized service center.
AVIS: Risque de choc electricque, ne pas ouvrir.
CAUTION! The international symbol of a lightning bolt inside a triangle is intended to caution you to
uninsulated “dangerous voltage” within the device’s enclosure. The international symbol of an exclamation point inside a triangle is intended to alert you to the presence of important operating, maintenance
and servicing information in the manual accompanying the device.
CAUTION! To prevent electrical shock, match the wide blade of the plug on the power cord to the wide
slot on the power outlet and insert fully. ATTENTION: Pour eviter les chocs electriques, introduire la
lame la plus large de la fiche dans la borne correspondante de la prise et pousser jusqu’au fond.
CAUTION! To reduce the risk of electrical shock, do not expose this equipment to rain or moisture.
1. Read Instructions. All safety and operating instructions should be read before operating the device.
2. Retain Instructions. The safety and operating instructions should be retained for future reference.
3. Heed Warnings.All warnings on the device and in the operating instructions should be adhered to.
4. Follow Instructions. All operating and safety instructions should be followed.
5. Water and Moisture. The device should never be used in, on or near water due to risk of fatal shock.
6. Carts and Stands. The device should only be used on carts or stands recommended by the
manufacturer.
7. Wall and Ceiling Mounting. The device should be mounted on a wall or ceiling only as recommended
by the manufacturer.
8. Ventilation. The device should always be located in such a way that it maintains proper ventilation.
It should never be placed in a built-in installation or anywhere that may impede the flow of air
through its heat sink or ventilation openings.
9. Heat. Never locate the device near heat sources such as a radiator, floor register, stove or other heat
generating device.
10. Power Supply. The device should only be connected to a power supply of the type described in the
operating instructions or as marked on the device.
11. Polarization. This product is equipped with a polarized line plug that has one blade wider than the
other. To prevent electrical shock, match the wide blade of the plug with the wide blade slot of the
receptacle and insert fully.
12. Power Cord Protection. Power cables should be routed so they are unlikely to be stepped on or
crushed by items placed on or against them. Pay special attention to where the plug enters a socket
or fused strip and to where the cord enters the device.
13. Cleaning. The device should be cleaned in accordance with the manufacturer’s instructions.
14. Periods of Non-Use. The device should be unplugged from the wall outlet when it is not in use for
extended periods.
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Cut along dotted line and mail.
IF YOU PREFER, YOU CAN REGISTER ONLINE AT WWW.KLIPSCH.COM
For multiple speaker purchases, please fill out only one warranty card.
Name:
Street Address:
City/State/Zip:
Home Phone:
Work Phone:
E-mail Address:
Would you like to receive the latest product updates and news via e-mail? q Yes q No
Product Purchase
Model and serial number must be included to honor your warranty card. For multiple speaker
purchases, please fill out only one warranty card.
Model Serial Number
Model Serial Number
Model Serial Number
Model Serial Number
Model Serial Number
Model Serial Number
What store did you purchase your Klipsch products from?
Store Name: State:
How did you hear about Klipsch? q Audio/Home Theater Magazine q Other Magazine q TV
q Radio q Newspaper q Trade Show q Friend q Retail Dealer q Direct Mail
Have you purchased Klipsch products before? q Yes q No
If yes, what products?
Product Name(s):
When do you hope to purchase additional loudspeakers? q 6 mos. – 1 yr. q 1–2 yrs.
How likely are you to consider Klipsch products for your upcoming purchases? q Very likely
q Somewhat likely q Doubtful
If doubtful, why? q Don’t carry product I’m looking for q Too expensive
q Klipsch dealer too far away q Other
Please tell us about you!
q Married q Single q Student
q Male q Female
Age: q 15-17 q 18-24 q 25-35 q 36-45 q 46-55 q 55-64 q 65+
Annual Household Income: q Under $25,000 q $25-35,000 q $35-50,000
q $75-100,000 q $100,000+
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Component Specifications
LF-12
Type: Bass reflex enclosure via dual passive radiators
Amplifier: Maximum Output Power-2000 watts
FTC Rated Power-1000 watts into 7 ohms,
22-100Hz @ 1% THD
Auto Power On: 2 second ON delay, 15 minute OFF delay
Frequency Response: 16-100Hz ±3dB
Maximum Acoustic Output: 123dB 1/8space 1 meter
Low Pass Crossover: Continuously variable from 40-120Hz,
36dB/octave slope above 120Hz.
Inputs: 2) Line level RCA phono jacks 1) Line Level Dedicated
LFE channel input (nonfiltered) 2) High level speaker
terminals
Outputs: 2) Line level RCA phono jacks with switchable high
pass filter between 50 and 100Hz, 6dB/octave slope
2) High level speaker terminals with fixed high pass at
100Hz, 6dB/octave slope
Phase: Switchable 0-180 degrees
Drive Components: 1) K-1074-K 12" (30.5cm) driver
2) KD-123-K 12" (30.5cm) passive radiators
Net Weight: 61 lbs. (27.7kg)
Height: 16.2" (41.15cm)
Width: 15.6" (39.69cm)
Depth: 17.37" (44.12cm)
Cabinet: Medium density fiber board construction (MDF)
Finish: Matte-finish black vinyl
Voltage: 110/120 VAC 60 Hz - Export Version 230
VAC 50/60 Hz
LF-10
Type: Bass reflex enclosure via dual passive radiators
Amplifier: Maximum Output Power-1000 watts
FTC Rated Power - 500 watts continuous into 10 ohms,
22-100Hz @ 1% THD
Auto Power On: 2 second ON delay, 15 minute OFF delay
Frequency Response: 19-100Hz ±3dB
Maximum Acoustic Output: 120dB 1/8space 1 meter
Low Pass Crossover: Continuously variable from 40-120Hz,
36dB/octave slope above 120Hz
Inputs: 2) Line level RCA phono jacks 1) Line Level Dedicated
LFE channel input (nonfiltered) 2) High level speaker
terminals
Outputs: 2) Line level RCA phono jacks with switchable high
pass filter between 50 and 100Hz, 6dB/octave slope
2) High level speaker terminals with fixed high pass at
100Hz, 6dB/octave slope
Phase: Switchable 0-180 degrees
Drive Components: K-1073-K 10" (25.4cm) driver
2) KD-104-K 10" (25.4cm) passive radiators
Net Weight: 49 lbs. (22.25kg)
Height: 14.2" (36.07cm)
Width: 13.6" (34.54cm)
Depth: 15.4" (39.12cm)
Cabinet: Medium density fiber board construction (MDF)
Finish: Matte-finish black vinyl
Voltage: 110/120 VAC 60Hz - Export Version 230
VAC 50/60Hz
Klipsch Limited Warranty
KLIPSCH, L.L.C. (“KLIPSCH”) warrants this product to be free from defects in materials and workmanship (subject to the terms
set forth below). For a period of five (5) years from the date of purchase, KLIPSCH will repair or replace (at KLIPSCH’s option)
this product or any defective parts (excluding electronics and amplifiers) in this product. For products that have electronics or
amplifiers, the warranty on those parts is for a period of two (2) years from the date of purchase.
To obtain warranty service, please contact the KLIPSCH authorized dealer from which you purchased this product. If your dealer
is not equipped to perform the repair of your KLIPSCH product, it can be returned, freight paid, to KLIPSCH for repair. Please
call KLIPSCH at 1-800-KLIPSCH for instructions. You will need to ship this product in either its original packaging or packaging
affording an equal degree of protection.
Proof of purchase in the form of a bill of sale or receipted invoice, which is evidence that this product is within the warranty
period, must be presented to obtain warranty service.
This Warranty is invalid if (a) the factory applied serial number has been altered or removed from this product or (b) this product
was not purchased from a KLIPSCH authorized dealer. You may call 1-800-KLIPSCH to confirm that you have an unaltered serial
number and/or you purchased from a KLIPSCH authorized dealer.
This Warranty does not cover cosmetic damage or damage due to acts of God, accident, misuse, abuse, negligence, commercial
use, or modification of, or to any part of, the product. This Warranty does not cover damage due to improper operation, maintenance or installation, or attempted repair by anyone other than KLIPSCH or a KLIPSCH dealer which is authorized to do
KLIPSCH warranty work. Any unauthorized repairs will void this Warranty. This Warranty does not cover products sold AS IS
or WITH ALL FAULTS.
REPAIRS OR REPLACEMENTS AS PROVIDED UNDER THIS WARRANTY ARE THE EXCLUSIVE REMEDY OF THE
CONSUMER. KLIPSCH SHALL NOT BE LIABLE FOR ANY INCIDENTAL OR CONSEQUENTIAL DAMAGES FOR
BREACH OF ANY EXPRESS OR IMPLIED WARRANTY ON THIS PRODUCT. EXCEPT TO THE EXTENT PROHIBITED
BY LAW, THIS WARRANTY IS EXCLUSIVE AND IN LIEU OF ALL OTHER EXPRESS AND IMPLIED WARRANTIES
WHATSOEVER, INCLUDING BUT NOT LIMITED TO, THE WARRANTY OF MERCHANTABILITY AND FITNESS FOR
A PRACTICAL PURPOSE.
Some states do not allow the exclusion or limitation of incidental or consequential damages or implied warranties so the above
exclusions may not apply to you. This Warranty gives you specific legal rights, and you may have other rights which vary from
state to state.
This product complies with the essential requirements of EMC directives 89/336/EEC and 73/23/EEC (inclusive of
93/68/EEC) and carries the CE mark accordingly.
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15. Dangerous Entry. Care should be taken that no foreign objects or liquids fall or are spilled inside
the device.
16. Damage Requiring Service. The device should be serviced by a Klipsch authorized service center when:
-The plug or power supply cord has been damaged.
-Objects have fallen or liquid spilled inside of the device.
-The device has been exposed to moisture.
-The device does not appear to be operating properly or exhibits a marked change in performance.
-The device has been dropped or the cabinet has been damaged.
17. Service. The user should not attempt to service the device beyond what is described in the operating
instructions. All other servicing should be referred to qualified personnel. If dealer service is not
available, contact Klipsch customer service for a return authorization (RA) number before shipping.
Klipsch Customer Service: 800-554-7724
All return shipments should be made to:
Klipsch L.L.C.
137 County Road #278
Hope, AR 71801
RA#…(return authorization number required)
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We Want Your Klipsch Product to Look and
Sound as Good as When it Left the Factory.
Please Check Promptly for Transit Damage.
Each Klipsch product is individually tested for sonic quality and inspected for superior appearance
before it leaves the Hope, Arkansas factory. Your loudspeaker left the factory in perfect condition in
packaging carefully engineered to protect both the working parts and finish. However, in certain
extreme circumstances, the products may be damaged in transit.
To ensure that your loudspeaker is in its original condition, please inspect it immediately. If any damage
is discovered, notify the authorized Klipsch dealer that the unit was purchased from or the transportation company responsible for safe delivery. In the latter case, make a request for inspection from the
transportation company and hold the product in its original shipping carton for the inspector. After a
joint inspection report is made, file a claim with the transportation company.
Subwoofer Placement
Your Klipsch subwoofer is designed to operate at frequencies below 120Hz which are essentially omnidirectional (difficult to localize). There may be several options for the placement of the subwoofer in
your room which will affect its frequency response and output level. Corner placement improves the
acoustic loading of the subwoofer, increasing its output and dynamic range capabilities. The least amount
of output will result when the subwoofer is placed away from walls or in the center of the room.
Asymmetrical placement of two subwoofers in a room may improve low frequency reproduction by providing a smoother and more consistent response pattern. Since even minor repositioning can result in an
audible performance change, experiment with different locations for best results.
In most cases, we recommend that the subwoofer be placed in the vicinity of the speakers with which it
is being paired. A subwoofer reproducing front channel bass will generally perform better when placed in
the same end of the room as the main speakers. A subwoofer connected to the rear channels of a surround system typically performs best when positioned in the rear of the room.
If your subwoofer is to be placed in an enclosed cabinet, provisions should be made to ventilate the heat
radiated by the enclosed amplifier. Additionally, since a portion of the acoustic output is generated by the
side-firing drivers, a minimum of several inches of space should be provided around the subwoofer. The
front of the cabinet should be acoustically transparent.
How to Connect Your LF Series Subwoofer
AC Power
Since your subwoofer has an internal power amplifier, it must be plugged into a nearby AC wall outlet.
The subwoofer should be unplugged from the AC power with the power switch in the OFF position during hookup and installation. To eliminate a tripping hazard, all connections should be unplugged from
the back panel of the subwoofer if it is being moved. Avoid extremely long extension cords of small
gauge since they can impair the performance of the subwoofer’s amplifier and present a potential fire
hazard. If the subwoofer will not be used for an extended period of time, unplug the power cord from
the AC power outlet.
Note: 230 volt models are not supplied with an AC power cord but are equipped with an IEC-type
power cord socket.
CAUTION: SINCE YOUR KLIPSCH SUBWOOFER HAS BUILT-IN ELECTRONICS, DO NOT PLACE
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IT NEAR SOURCES OF HEAT OR MOISTURE. TAKE CARE TO ROUTE THE POWER CORD SO
THAT IT WILL NOT BE CUT, DAMAGED OR PINCHED.
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FIGURE A
LF SERIES INPUT PANEL
Main speakers full range
• Line level connections shown at left, one channel
shown, repeat for opposite channel
• Speaker level connections shown at right, one channel
shown, repeat for opposite channel
• Optional LFE connection (— - - — - - — )compatible
with speaker or line level hookups
FIGURE B
LF SERIES INPUT PANEL
Main speakers limited range
• Line level connections shown at left, one channel
shown, repeat for opposite channel
• Speaker level connections shown at right, one channel
shown, repeat for opposite channel
• Optional LFE connection (— - - — - - — )compatible
with speaker or line level hookups
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MAIN SPEAKERS FULL RANGE
Connect the subwoofer’s left and right channel “LINE IN” jacks to a non-filtered (full-range) main
channel, pre-amp output on your receiver or pre-amp/processor. Refer to the lefthand side of Figure A.
This signal contains the normal bass information present in the main left and right channels. When
connecting to a component that has only a single pair of pre-amp outputs, “Y” adapters (splitters)
may be used to feed a signal to both the subwoofer and the power amplifier.
Note: When connecting to a mono subwoofer output on your electronics (preferably full range), add
a “Y” cord to the subwoofer end of the cable and connect to both line inputs. This will provide a significant increase in the subwoofer’s output level when compared to the connection of just one of the
“LINE IN” inputs.
MAIN SPEAKERS LIMITED RANGE
If a bass limited (high pass filtered) signal is to be sent to your main speakers, connect your main
channel power amplifier inputs to the “LINE OUT” jacks on the subwoofer. Refer to the lefthand
side of Figure B. These outputs will remove frequencies below 50 or 100Hz from your main speakers,
depending upon the setting of the “HIGH PASS SELECT” switch. This type of hookup reduces distortion and increases the dynamic range of your main amplifier and speakers.
LFE/BYPASS IN (optional)
This input is used with 5.1 (six channel) surround sound systems. The LFE channel contains bass effects
information that is different than the bass signals present in the other channels to enhance the sound-
track’s impact. Connect the “LFE/BYPASS IN” input on the LF-10 and LF-12 to your electronic’s desig-
nated LFE output jack. The “LFE/BYPASS IN” requires a low pass filtered signal from your electronics
(high frequencies removed). Do not connect this input to a full range (unfiltered) pre-amp output.
!
Note: The peak level of this signal can be up to 10 decibels louder than main channel bass signals, so
caution should be exercised when connecting to this output and initially adjusting the subwoofer’s
“LFE LEVEL” control. Signals coming into this jack are not affected by the subwoofer’s adjustable
“LOW PASS (Hz)” filter or main “LEVEL” control. The “LFE/BYPASS IN” will not normally be the
only connection to the subwoofer, unless the LFE channel is the only signal the subwoofer will be
reproducing. The “SPEAKER IN” and “LINE IN” connections are the primary hookups. The “LFE
IN” is compatible with either line level or speaker level connections.
BASS MANAGEMENT
Most surround sound electronics are equipped with a bass management system that permits the selection
of either a full or limited range (bass filtered) operation for each speaker. When using the “LINE IN” or
“SPEAKER IN” connections on the subwoofer, configure the main channels of your surround electronics
for the “Large” or “Full Range” setting. When connecting to a subwoofer output, defeat the low pass
filtering on your electronics, if possible. If this cannot be done, use the “LFE/BYPASS IN” input and let
your electronics determine the low pass frequency for the subwoofer (the “LFE LEVEL” control now
becomes the primary subwoofer level control). Alternately, you can connect the subwoofer’s “LINE IN”
input to a subwoofer output and set the “LOW PASS (Hz)” control on the subwoofer to a lower cutoff
frequency if desired. Since the specifics of bass management systems vary from brand to brand, consult
your Klipsch dealer or the manufacturer of your electronics for more details.
Operating Controls
LEVEL
This control adjusts the volume of the subwoofer relative to your main speakers. Use this control to
compensate for room acoustics, subwoofer placement and the sensitivity of your main speakers. This
control affects the signals that are connected to the “LINE IN” or “SPEAKER IN” inputs. It does not
affect the volume level of your main speakers or signals connected to the “LFE/BYPASS IN.”
Suggested control position for initial setup: 10 o’clock.
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LOW PASS (Hz)
This control is a variable filter that controls the upper frequency limit of the subwoofer from 40 to
120Hz. Use this control to compensate for room acoustics, subwoofer placement, type of hookup and
the capabilities of your main speakers. Proper adjustment of this control helps smooth the transition
in the bass frequencies between your main speakers and the subwoofer. Setting the filter too high will
cause an overlap in the bass frequencies reproduced by your main speakers, resulting in muddy and
indistinct low frequencies. Setting this control too low may cause the output of the subwoofer to
sound disconnected from the bass range being reproduced by the main speakers. In light of this, we
encourage you to experiment with various settings.
If your main speakers are being high pass (bass) filtered by your subwoofer, the “LOW PASS (Hz)”
should initially be set near the frequency of this filter (either 50 or 100Hz line level, or 100Hz
speaker level). Room acoustics will often dictate a slightly higher or lower setting of this control.
If your main speakers are being fed a full range signal, the “LOW PASS Hz” control should be set
near the low frequency limit of your main speakers (typically at the lowest setting of the control with
larger full range speakers). In all cases, experiment due to variability in speaker placement, room
acoustics and associated equipment.
LFE LEVEL
This control only affects the volume of the signals connected to the “LFE/BYPASS IN” input. These
signals are mixed with the bass signals that are fed into the “LINE IN” or “SPEAKER IN” inputs.
This control provides a means to balance the LFE signal level to properly blend with the standard
bass signal level.
NOTE: Suggested control position for the initial set-up: 9 o’clock
CAUTION: LFE SIGNALS CONTAIN EXTREME LOW FREQUENCY INFORMATION. AVOID
EXTREME CLOCKWISE (HIGHER) ADJUSTMENTS OF THE “LFE LEVEL” CONTROL TO PREVENT OVERDRIVING AND DAMAGE TO THE SUBWOOFER AMPLIFIER AND ITS WOOFER.
HIGH PASS SELECT
This switch selects either “50Hz” or “100Hz” as the bass cutoff frequency for your main speakers.
This switch only affects “LINE OUT” connections. Refer to the lefthand side of Figure B. This
requires that your subwoofer be connected to electronics offering both the preamp output and the
power amp input jacks. Typically the higher “100Hz” setting is used for smaller bookshelf speakers
to relieve them of the strain of reproducing loud, deep bass frequencies. The “50Hz” setting is typi-
cally selected for larger floorstanding speakers as they are better able to handle bass energy, only
needing reinforcement at the lowest frequencies.
The subwoofer’s high pass filter has a gentle cutoff so there is still some audible signal content in your
main speakers below the circuit’s cutoff frequency.
POWER
This switch has conventional power “ON” and “OFF” positions as well as an automatic setting. In
the “AUTO” position, the subwoofer will turn itself on when it receives a signal from your system.
If no signal is sent for a period of 15 minutes, the sub will turn itself off. A red power light indicates
a standby mode in which the amplifier will turn on when it senses a signal. Green indicates the subwoofer is on and receiving a signal.
PHASE
This switch is used to reverse the polarity of the subwoofer relative to your main speakers, allowing
you to compensate for any acoustic cancellation of bass energy caused by the listening room. Audition
a recording with a prominent, repetitive bass line. Use the setting that yields the greatest quantity of
bass (0° or 180°). The proper setting of this control is affected by room acoustics and the placement of
the subwoofer in the room. You may need to repeat this procedure if the subwoofer is repositioned.
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Troubleshooting
• If your subwoofer has little or no output:
– Double-check your power (AC) and system connections.
– Make sure that the “LEVEL” control is turned up.
– Make sure that the power switch on the rear control panel is in the “ON” or “AUTO” position.
– Check that the Power light on the rear control panel is lit. If it is not, check the AC fuse.
changing the AC main power fuse, unplug the power cord first. To access the fuse, use the appropriate
screwdriver to unscrew the flush cap on the fuse receptacle. If the fuse is blown (the filament inside
the glass tube is burned through), replace it with the same type and value printed on the amplifier
panel next to the fuse holder. NEVER INSTALL A LARGER FUSE THAN THE VALUE INDICATED
ON THE AMPLIFIER PANEL. If the fuse blows again when the subwoofer is powered up, return the
unit to your authorized Klipsch dealer for servicing by qualified personnel. If dealer service is not
available, contact Klipsch Customer Service for a Return Authorization Number before shipping.
Klipsch Customer Service: 800-554-7724
All return shipments should be made to:
Klipsch L.L.C.
137 County Road #278
Hope, AR 71801
RA# … (Return Authorization Number required)
Unless otherwise instructed by Customer Service, do not ship items being returned to our
corporate offices in Indianapolis!
When
• The powered subwoofer amplifier is protected by a thermal sensor. If it is run for extended
periods beyond the designated power rating, the thermal sensor will engage and shut down the
subwoofer. If this occurs, turn the power switch off, reduce the volume level on your electronics
and wait five minutes before restarting the system.
• If the speaker level connections are in use, a polarity reversal of one of the speaker wires coming
from your amplifier will result in diminished output from the subwoofer. Refer to “About Speaker
Wire Connections.”
• If you experience a noticeable hum when the subwoofer is connected to your system (a system that
includes video equipment), disconnect the cable television line (if present) from the system. If the
hum disappears, consult your Klipsch dealer for a ground isolator for the cable line. If this does
not solve the problem, contact your Klipsch dealer for further advice.
• If you connect the subwoofer to a second set of speaker terminals (i.e. speaker B), and there is a
dramatic loss of volume from your main speakers, hook the subwoofer to the same terminals on
your amplifier as your main speakers. Alternately, you can hook your main speakers to the
“SPEAKER IN” terminals on the subwoofer, along with the subwoofer’s input cables, or switch to
a line level connection if your electronics permit. If you are still experiencing difficulties, consult
your authorized Klipsch dealer.
• If the subwoofer is installed near your television and color distortion is noted, simply move the sub-
woofer farther away from your television until the interference disappears from the picture.
!
• Regardless of your amplifier’s rated capacity, do not operate the system at the full output (highest
volume): Amplifiers can create extremely high levels of distortion when operated at full output and
may damage your loudspeakers.
• Position speaker connection wires so that they do not create a trip hazard.
If you have any questions regarding the installation or connection of your subwoofer, please contact
your Klipsch dealer, or contact us directly at 800-554-7724.
Care and Cleaning of Your Subwoofer
Your Klipsch subwoofer has a durable vinyl finish that should only require dry dusting or cleaning
with a damp cloth. Avoid the use of abrasive or solvent-based cleaners and harsh detergents.
Page 12
Types of Connections
Your subwoofer may be installed using either “SPEAKER LEVEL” or “LINE LEVEL” connections;
both are not required. The LFE connection, however, is an optional line level connection that can be
used in conjunction with either type of hookup. Refer to the “LFE/BYPASS IN” and “BASS MAN-
AGEMENT” sections for more detail. You can connect the subwoofer so that your main speakers
will reproduce a full range signal or a limited range (bass filtered) signal. Speaker level connections
are used when connecting to a receiver or integrated amplifier that lacks line level subwoofer or preamp output jacks. Line level connections are often the best choice when connecting the subwoofer to
a pre-amp/processor and power amplifier or integrated amplifier that possesses main channel pre-amp
or subwoofer outputs. The type of connection used depends upon the capabilities of your equipment
and your performance goals.
Speaker Level Connections
MAIN SPEAKERS FULL RANGE
Connect your main speakers and the left/right “SPEAKER IN” terminals of the subwoofer to the
corresponding main speaker outputs of your receiver/amplifier. Refer to the righthand side of Figure A.
If your electronics are so equipped, the subwoofer could be connected separately to the
receiver/amplifier’s speaker “B” outputs. If the subwoofer is located closer to your main speakers
than your electronics, you can connect the main speakers to the “SPEAKER IN” terminals of the
subwoofer and connect only the subwoofer to the receiver/amplifier as described above. Please consult
your dealer for details regarding connection of multiple speaker cables to a common set of speaker
outputs. For optimum performance, use equal lengths (left and right inputs) of the same high quality
speaker cable that you are using to connect your main speakers. Consult your Klipsch dealer for specific recommendations. Refer to “About Speaker Wire Connections” for more detail.
MAIN SPEAKERS LIMITED RANGE
If a bass limited signal will be sent to your main speakers, connect them to the “SPEAKER OUT”
terminals on the subwoofer instead of to your amplifier. Refer to the righthand side of Figure B.
The high pass filter on these outputs will remove the bass frequencies below 100Hz from your main
speakers, lowering distortion and increasing dynamic range. Refer to the “LOW PASS” section for
more detail.
Note: Do not connect another subwoofer to these outputs as they are high pass filtered (bass
frequencies removed).
!
About Speaker Wire Connections
Be sure to observe proper polarity when making connections between the subwoofer and the amplifier
(+ to + and - to -). If the polarity of one of these wires is reversed, the output of the subwoofer will
be diminished. Most speaker wire is color-coded or has some distinguishing feature differentiating the
two conductors. Speaker wire connectors on most loudspeakers and amplifiers are also color-coded.
Typically, RED is positive (+) and BLACK is negative (-), or ground. It does not matter which wire
conductor is connected to the positive or negative terminals of your equipment as long as
consistent. Be sure that the connections from the amplifier to all of the speakers in your system
nected in a like manner. If this is not done, the quantity of bass will be reduced and the stereo image
will be compromised. Be careful to avoid excess bare wire or loose strands of wire at the connections.
This could cause a shorting condition between adjacent positive and negative terminals that could
damage your equipment.
you are
are con-
Line Level Connections
These connections should be made using high quality shielded interconnect cables terminated with
RCA phono plugs. These cables should be as short as possible and kept away from noise generating
electrical equipment such as digital electronics or electric motors. Consult your Klipsch dealer for
specific cable recommendations.
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