SB28_UM_ML_1.1
w w w . l - a c o u s t i c s . c o m
11 en
EN
7
OPERATION
7.1
System configuration
The choice of a system configuration should be the result of an electro-acoustic study conducted by an expert (System
Engineer or Audio Consultant). However, this will not be detailed here as sound-design aspects are beyond the scope
of this manual. This study can rely on the simulations modeled in SOUNDVISION software, yielding electro-acoustic
predictions which take into account the enclosures
’
manufacturer data and particular situational usage, as well as the
projected environment.
Several operation modes are for building all the common configurations (L/R, L/C/R, distributed), and each mode is
associated with a set of factory presets. Other non-conforming configurations do not correspond to any preset.
The
L-ACOUSTICS
®
SB28 subwoofer enclosure
is intended to extend the low frequency response of a main
system in the ‘‘STANDARD’’ and ‘‘CARDIOÏD’’ operation modes.
The LA8 output channel assignment varies upon the preset selected by the user. Always check that
each SB28 enclosure is connected to the correct output channel before operating.
Note:
The latest version of the preset library is either supplied by an L-ACOUSTICS
®
authorized representative and is
also downloadable on the L-ACOUSTICS
®
internet website @
www.l-acoustics.com
.
7.2
“STANDARD” mode
In ‘‘STANDARD’’ mode the SB28 enclosures extend the low frequency response of the system in use down to 25Hz.
Each SB28 enclosure generates an omni-directional coverage pattern.
7.2.1
Connecting the SB28 to the LA8
Each of the SB28 enclosures is connected to an LA8 output channel ranging from channel 1 through 4. Therefore a
single LA8 amplified controller can drive up to four SB28 enclosures (Figure 5).
Any additional SB28 enclosure beyond 4 needs to be connected to an additional LA8 amplified controller following the
same wiring procedures.
Note:
System resources are optimized for a multiple of four SB28 enclosures.
Figure 5: Four SB28 subwoofers connected to an LA8 amplified controller
IN A
IN B
OUT 1 (IN A)
OUT 2 (IN A)
OUT 3 (IN B)
OUT 4 (IN B)
!
IMPORTANT
