3
PRODUCT DESCRIPTION
The QBx (“Quiet Box”) Surround is the ideal choice for today’s surround applications. It is a
two-way design that incorporates all the QBx technology features. The result is exceptional
performance with minimal space requirements. While the QBx Surround is diminutive in size,
it has the full complement of QBx cabinet, driver and crossover technology.
The QBx Surround system consists of the following:
2
Model QBx Surround speakers with premounted hanging brackets
2
Mounting templates
2
Interlocking wall hangers
4
1” felt dot bumpers
8
Wall fasteners with screws for drywall mounting
8
Self-tapping screws (#6 x 2” phillips flat-head) for solid surface mounting
QBx Technology
In an ideal speaker, the speaker cabinet is inert and resonance free. It should have smooth
contours without projections that cause reflections which degrade high frequency response.
In short, the cabinet should not negatively affect the sound of the loudspeaker. QBx (Quiet
Box) refers to a number of techniques that reduce the detrimental effects that typically
come from the resonances and reflections of ordinary cabinets.
“Butterfly” grille cutout
The cutout area around the tweeter is given a highly irregular contour to prevent the
irregular high frequency response that would otherwise occur. The contour expands and
contracts around the perimeter of the tweeter, creating a “butterfly” shape.
Elliptical baffle edges
The grille is mounted flush into the baffle. The baffle edges have large elliptical radiuses. This
smooths the cabinet termination, greatly reducing the edge reflections. High frequency
smoothness is preserved.
High-Loss Sandwich Baffle
The unique high-loss baffle is constructed from multiple layers of wood and a high tech
adhesive. The “lossy” adhesive that laminates the two layers of speaker baffle greatly reduces
cabinet resonances, resulting in purer midrange and clean, crisp bass.
Hand-Tuned Crossover
The crossover networks were designed using sophisticated computer simulation. Final system
balance is determined by exhaustive listening tests. These networks adhere to an “in-phase”
or Linkwitz-Reilly design: time alignment and coherency are maintained through the driver-
to-driver transition region. For optimum use as a surround speaker, the QBx Surround has
been designed for best response on a downward tilting (30
°
,
±
15
°
) axis. In production, each
crossover is individually tuned by technicians to within
±
0.5dB of the Master Reference,
ensuring predictable performance in your home.
Drive Units
This two-way monitor uses a 1-inch black-anodized aluminum dome tweeter with a
multifinned aluminum heatsink and a 5
1
/
4
-inch bass unit with a High Definition Aerogel
cone. The video-shielded driver complement provides unlimited placement options.
