SE Audiotechnik B 15, Руководство пользователя

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37 36
For the passive subwoofers, the needed delay must be applied before in the signal chain, from the mixer,
an external processor or if possible, the amplifier itself. An advantage in this case, is the connection
flexibility offered by the subwoofers with the front connectors they include.
Figures 36 depicts an end-fire made with two stacks of B 18 subwoofers and figure 37 its related
connection scheme. Notice how the signal is provided with a single speakON
®
NL4 cable from the amplifier
and passed through each pair of subwoofers using link cables, simplifying the deployment of the whole
setup. Keep in mind that all the connections between subwoofers are done over pins 1+/1- of the
speakON
®
link cables.
FRONT
(Audience)
FRONT
(Audience)
1.7 m
REAR
(stage)
REAR
(stage)
speakON® NL4
from AMP
Figure 36. Front (top) and rear (bottom) views of and End-fire setup of two B 18 stacks, centred at 50 Hz due to the 1.7 m distance between them.
Notice that no cables are seen from the front of the array.
Input/Link 1
Input/Link 2
Output Ch. 2
Input/Link 1
Input/Link 2
Output Ch. 2
Input/Link 1
Input/Link 2
Output Ch. 2
Input/Link 1
Input/Link 2
Output Ch. 2
speakON®
NL 4 cable
1+/1-
1+/1-
1+/1-
1+/1-
2+/2-
2-CHANNEL
AMPLIFIER
REAR SUB # 2 FRONT SUB # 2
REAR SUB # 1 FRONT SUB # 1
Figure 37. Connection scheme for end-fire system shown in figure 36.