Electro-Voice X1-212/90, Руководство по установке

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Subwoofer cardioid options
The X12-128 cardioid subwoofer arrays can be used to direct the output of an array of
subwoofers in order to limit excessive amounts of bass in undesired areas. These arrays can
be used to keep bass off of a stage, provide more consistent bass coverage in the audience,
and reduces bass in the surrounding area.
Multiple X12-128 can be arrayed to create a cardioid polar pattern.
Figure 7.1: Cardioid pattern top view
The rejection may be less in smaller indoor environments than in larger outdoor environments.
The subwoofers must be physically placed in one (1) of the options shown.
Figure 7.2: X12-128 Cardioid Options
Cardioid option A:
Two (2) X12-128 subwoofers orientated horizontally. Direct the top subwoofer towards the
audience and the bottom subwoofer away from the audience (Rejection direction).
Cardioid option B:
Three (3) X12-128 subwoofers orientated horizontally. Direct the top two (2) subwoofers
towards the audience and the bottom subwoofer away from the audience (Rejection
direction).
Cardioid option C:
Three (3) X12-128 subwoofers orientated vertically. Direct the left and right subwoofers
towards the audience and the center subwoofer away from the audience (Rejection direction).
7.2
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Electro-Voice Installation Manual 2015.04 | 02 | F.01U.310.953