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Congratulations and thank you for purchasing our Proficient Protege LSB3 Three-Channel Passive Soundbar!
This soundbar is designed to be used for the front left, center and right channels of a home theater system and
should be connected to the left, center and right channels of an A/V receiver or a multi-channel home theater
amplifier.
The LSB3 has three speaker enclosures within the soundbar. The Left and Right chambers are vented
enclosures and the Center chamber is a highly damped sealed enclosure. Because the Center Channel in a
home theater system gets nearly 70% of the audio, including most of the dialog, it needs to be particularly
accurate and intelligible. For this reason, Proficient chose to use a sealed box design for the LSB3’s Center
chamber for its lower group delay and more controlled excursion, which is engineering speak for enhanced
controlled woofers. The result is Center Channel dialog that is easier to understand with better clarity and
detail in the music.
Woofers and Tweeters
The LSB3 incorporates six injection molded graphite woofers and three silk dome tweeters. The woofers use a
special formulation of graphite, polypropylene and carbon fiber materials combined them using an injection
molded process. The qualities of these different materials work together to deliver exceptionally clear mid-
range as well as the stiffness and strength required to produce strong low frequencies that blend well with
any subwoofer.
The one-inch silk dome tweeters provide excellent off-axis response by nature of their dome shape, comple-
menting the dispersion of the woofers. The material properties of the IMG woofer cones and silk dome tweet-
ers work together to provide a seamless sound quality and a spacious, open sound that seems more like it’s
coming from three separate speakers instead of a soundbar.
Crossover Networks
The LSB3’s three internal crossover circuits (one per channel) are carefully tuned and thru our listening tests,
we believe that we have come up with a system that will deliver outstanding dispersion. That means all fre-
quencies of sound spread evenly around the room and the system has spacious, natural sound.
Surface Placement
The LSB3 soundbar can be placed on top of an AV rack, centered directly under the TV. Or, it can be placed on
a shelf that the TV sits on. Adhere the included feet to the bottom four corners to keep the LSB3 from vibrat-
ing on the surface it is placed on. The feet will also keep the soundbar from “walking” on the surface that it is
sitting on.
Wall Mounting
An included Proficient-designed mount makes it easy and quick to attach the LSB3 to a wall. It is designed to
screw into wall studs mounted 16 inches on-center, and allows you to slide the LSB3 horizontally so it lines up
perfectly with the center of the TV.
Bass
The graphite woofers deliver outstanding bass for their size, but the LSB3 isn’t designed to deliver true full-
range sound on its own. To get full-range sound, we recommend you combine the LSB3 with a Proficient floor
standing subwoofer when the budget and space permits.
Cabinet
Our cabinet is made from thick MDF panels to prevent unwanted vibration so the sound you hear comes
from just the drivers, not the cabinet. The black polymer coating helps to acoustically seal and dampen the
enclosure.
To get the best possible performance from your LSB3, please read this manual carefully and follow all instruc-
tions for installation and setup.
INTRODUCTION
