L-Acoustics 108P, Руководство оператора

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L-ACOUSTICS P Series Manual V2.1 7/12/2007
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0. INTRODUCTION
The 108P and 112P combine the significant advantages of L-ACOUSTICS’ proven coaxial point
source technology with the convenience of self-powered performance and the power plus flexibility
of on-board digital signal processing.
Designed for portable applications, the 108P and 112P are suitable for distributed sound
reinforcement in theatre, congress centre, concert hall, trade show, corporate A/V, houses of
worship, club, or television applications. When used with the L-ACOUSTICS SB15P self-powered
subwoofer, the 108P and 112P can also be used for side fill, drum monitoring or small-to-medium
format front-of-house (FOH) applications. In addition to these applications, the 108P is specifically
optimized for use as a high-power nearfield monitor while the 112P provides a high-performance
stage monitoring solution.
The L-ACOUSTICS approach to distributed sound reinforcement starts with the specification that
each individual loudspeaker should behave as a coherent point source. This specification can be met
using coaxial components due to the fact that the directivity of the low and high frequency (LF and
HF) transducers is matched at the crossover frequency. This provides a smooth transition between LF
and HF sections with power response that is free of the polar lobing effects typical of traditional horn
/ woofer combinations. In addition, coaxial component directivity is horizontally, vertically and
diagonally symmetric (axi-symmetric), thus providing true point source behavior.
Extensive sound design and installation experience acquired by L-ACOUSTICS over the years
confirms this and we are confident that coaxial, axi-symmetric loudspeaker enclosures are the best
tools for multiple source, distributed sound reinforcement.
1. THE P SERIES
The L-ACOUSTICS P Series consists of: 108P and 112P self-powered loudspeaker enclosures, the
SB15P self-powered subwoofer and 108P, 112P, SB15P rigging accessories.
LOUDSPEAKER ENCLOSURES
(1) 108P
Self-powered 2-way coaxial loudspeaker with 100-degree axi-symmetrical coverage, containing
8” loudspeaker, 1” exit high frequency compression driver
(2) 112P
Self-powered 2-way coaxial loudspeaker with 90-degree axi-symmetrical coverage, containing
12” loudspeaker, 1.4” exit high frequency compression driver
108P 112P
Figure 1: 108P, 112P Loudspeaker Enclosures