JBL Synthesis Everest DD67000 - Manual (Page 16)

31
Project Everest loudspeaker systems are designed to be less affected
by room acoustics than conventional direct-radiator systems. However,
they are still sensitive to the overall symmetry of their locations relative to
the listening position, and their proximity to walls, ceilings and corners.
Ideally, any listening room should contain a combination of live surfaces
(e.g., walls and windows) and absorbent surfaces (e.g., drapes,
carpets, upholstery). If the distance between the floor and ceiling is
minimal, it is preferable that one surface has an absorbent covering.
To obtain the best stereo effect, each speaker should be placed an
equal distance from the listening position.
• The distance between the right and left speakers is determined by
the relationship between the distance from the listening position to
the speakers and the angles of the speakers. The Project Everest
loudspeakers’ imaging qualities enable them to be placed relatively
far apart from each other, but this weakens the imaging of sounds
such as vocals, that are typically mixed to the center of the stereo
soundstage. In such an installation, increasing the inward angle (toe-
in) of the speakers toward the listener will improve the center imaging.
Less
toe-in
40° – 60°
more
toe-in
60° – 90°
• The listener should be centered in front of the speakers, and furniture
should be of an appropriate height so that when the listener is sitting,
their ear level is about the same height as the high-frequency horn
(approximately 36 inches/91cm from the floor),
approximately
36" (91cm)
• Placing the speakers closer to the wall behind them or to the side
walls will result in an abundance of bass, but placing them too close
will result in dull sounding bass. On the other hand, too much distance
between the loudspeakers and the nearest wall will reduce the bass
output but result in fast and sharp sounding bass. The loudspeakers’
low-frequency alignment feature enables placing the loudspeakers
near (or even in) a corner without producing an overabundance of
bass. This corner placement allows optimal performance, even in
small rooms. Careful listening using various source materials will
enable you to find the most suitable location for your loudspeakers in
your listening room.
Each Project Everest loudspeaker in a stereo pair needs to be
designated as the right or left speaker, depending on its installed
location. Once speaker locations are decided upon, please refer to
System Orientation, in Chapter 7, to set them up.
CAUTION: Project Everest is a massive loudspeaker, consisting of
materials chosen for their density, with its weight concentrated in
a relatively narrow area. Verify the integrity of the floor surface before
placing and setting up the speakers. See Floor Requirements (below).
Remember that these loudspeakers cannot be easily moved once they
are installed.
fLoor requirements
The floor at the locations you select for your Project Everest loudspeakers
must be capable of supporting a load of 310 lb (141kg). Because
of the coupling effect of the stainless-steel feet, a flat, hard surface
such as wood or linoleum is preferable. However, the design of the
loudspeakers’ coupling system, along with the speakers’ substantial
weight, should result in excellent performance on any surface, even
on carpets.
To prevent indentations on wood or linoleum floors caused by the
weight of the loudspeakers, always utilize the enclosed coasters.
imPortant: Do not set up the Project Everest loudspeaker directly
on a ceramic tile floor; the concentrated weight might cause the tiles
to crack.
PLacement
anD setuP
6