BASH Digital Hybrid Class AB Amplifier: The Klipsch SW-311 powered
subwoofer features a highly efficient BASH digital hybrid class AB amplifier
which produces reliable, high-powered sound. The built-in amplifier is rated at 500 watts RMS (1200 watts Peak). The RMS power rating indicates power
available on a continuous, long-term basis. The Peak power rating indicates
power available for large, short-term peaks in your music or movie soundtrack.
Digital Sound Processing: The Klipsch SW-311 utilizes internal digital
sound processing for optimum sound at all volume levels.
10" Fiberglass Woofer: The Klipsch SW-311 powered subwoofer features a
front-firing highly damped, non-resonant 10" woven fiberglass driver for tight musical bass. The woofer employs a large 4-layer
aluminum-wound voice coil for high volume output.
Passive Radiator Design: The Klipsch SW-311 powered subwoofer features
a passive radiator design which employs dual side-firing highly damped,
non-resonant 10" woven fiberglass
passive radiators for greater bass reproduction.
Computer Optimized Surrounds: The SW-311's woofer & passive radiators
utilize computer optimized rubber surrounds for tighter bass.
Power LED Indicator: Located on the powered subwoofer's front baffle,
this LED indicates the operating status of the unit's built-in amplifier. The
LED will light red when the amplifier is in standby mode and green when the
amplifier is on and receiving a signal. If the LED is dark and not lit, the
amplifier is off.
Rubber Feet: The Klipsch powered subwoofer is equipped with four
integrated rubber feet to help prevent against vibration.
Placement: Klipsch powered subwoofers are designed to reproduce deep
bass and deliver the impact that makes your movies and music come alive.
Typically, optimum performance will result if you place the subwoofer in a
corner of the room on the same wall as your front channel speakers.
Top-Panel Controls: All the subwoofer's controls, and changes to
control settings are accessed through the keypad and display on the top of the
subwoofer's cabinet. The top-panel display's
brightness is adjustable to one of 4 levels.
Note: You can lock the powered sub's keypad and prevent
unintentional changes to your settings by other users.
Adaptive Room Correction: The included microphone and integrated
Adaptive Room Correction II (ARC) technology optimizes the Klipsch SW-311 for
any type of room. The adaptive room correction microphone (ARC-M1) plugs into
the subwoofer's rear-panel 3.5mm mic input. The adaptive room correction process
is controlled by the subwoofer's top-panel keypad. The unit will measure and
analyze your room's acoustics versus the subwoofer's characteristics and apply
adaptive room correction to provide optimal bass performance for your specific
Volume Control: You can use the left/right keys on the
top-panel keypad to adjust the
subwoofers volume level to match the output of your system's main speakers.
EQ Mode: The Klipsch SW-311 offers three different EQ modes to provide
bass emphasis. You can select from Punch, Depth, or Flat. Each is designed to
complement different types of audio material, such as movie soundtracks or
music. The Punch setting emphasizes the 55Hz region, while the depth setting
boosts the 30Hz range. The Flat setting defeats the Punch and Depth setting for
a flatter frequency response.
Lowpass Crossover: The Klipsch SW-311 powered subwoofer
features a variable lowpass crossover which is adjustable from 40-150Hz. The
crossover point chosen determines where low bass frequencies are "handed-off"
from your AV system's loudspeakers to the Klipsch powered subwoofer. Set the
crossover point based on the size of your systems' main left/right speakers. As
a general rule, for larger, floor-standing speakers, set the crossover point
between 50-90Hz. If using small bookshelf or satellite speakers for your mains,
set the crossover point between 90-150Hz. The smaller the speaker, the higher
the setting until the bass frequencies blend well between the loudspeakers and
the Klipsch powered sub. If setting the crossover point in the receiver, turn
the Lowpass Filter off.
Lowpass Slope: The lowpass slope function is used to adjust how
aggressively the subwoofer rejects frequencies above the low pass filter's
setting. There are four settings to choose from - 18, 24, 36, and 48 dB/octave.
The higher the number the more the upper frequencies are removed from the
Phase: The Klipsch SW-311 powered subwoofer has an
adjustable phase control which can be set between 0° and 180°. This control is
used to acoustically match the subwoofer's output to your system's main
speakers. Select a position between 0° and 180°, in which the subwoofer has more
output at your main listening position.
Saved Presets: You can store all of the subwoofer's audio control
settings (Room Correction, Volume, EQ, Lowpass, Phase) in one of five memory
presets - Music, Movie, Night, User 1, and User 2. This way you can save and
recall grouped audio settings for different audio content.
Auto On: You can select Auto On or Always On. The Auto-On
Circuit turns the amplifier on when an audio signal is detected and off after
approximately 20 minutes with no input signal.
IR Sensor: An infrared remote control sensor is included on the front
of the subwoofer for integration with A/V remote control systems. The IR codes
for this subwoofer can be obtained by visiting the Klipsch website.
Note: A dedicated remote control does not exist for this unit.
Line-Level Input: The Klipsch SW-311 powered subwoofer is
equipped with a pair of line-level RCA-type inputs. Most of today's AV receivers
have a line-level subwoofer output (LFE) labeled Subwoofer Pre Out, Sub Out, or
SW Out. If your receiver has this output, connect on end of a subwoofer cable to
it and connect the other end of the cable into the powered subwoofer's
line-level input labeled "LEFT/LFE". This connection allows the subwoofer to
operate with both music and surround sound movies. In absence of a subwoofer (LFE)
output on your receiver, as an alternative hookup, you can connect Left & Right
channel pre-amp outputs from a receiver to the "Left/LFE" and "Right" input on
the powered subwoofer.
Line-Level Output: The SW-311's mono line-level (RCA-type)
output can be used as an alternate method of connecting a second powered
subwoofer in your home theater system. The signal output from this mono
RCA jack is effected by the
Volume, EQ, Lowpass, Phase, and Room Correction settings of this subwoofer. The
advantage of this, is the ability for the Klipsch SW-311's Adaptive Room
Correction function to correct the response of the second subwoofer, resulting
in a more accurate response.
USB (type-B): This computer interface allows access to additional advanced
features within the subwoofer's room correction software. Optional, proprietary
Klipsch software and a higher level of technical knowledge are required to
correctly utilize this capability. This port can also function as an alternative
control interface with A/V control systems that can utilize a USB hookup.
12-Volt Trigger: The SW-311 features a 12-volt trigger input (3.5mm)
which turns on the powered subwoofer when a 12-volt trigger signal from a
connected receiver is detected.
WA Port (optional): The Klipsch powered subwoofer is fitted
with a proprietary 4-pin "WA-Port" connector for wireless operation, using
Klipsch's optional WA-2 wireless subwoofer kit (714WA2,
sold separately). The Klipsch WA-2 wireless subwoofer kit consists of two
components; a wireless Transmitter & wireless Receiver. The WA-2 wireless
subwoofer kit makes adding the Klipsch powered subwoofer to your home theater
system much easier, because it replaces the need for a separate subwoofer cable
that traditionally must be connected between the receiver and the powered sub.
Now, you can easily place your powered subwoofer where it both sounds and looks
best in the room since you're not restricted by an audio cable.