MTD 112 35 06/97
When arraying a large number of subwoofers, they can become overdirective even at very
low frequencies. Using a delay unit for the signal feeding the outermost enclosures can
provide an accurate control of the directivity, and is therefore recommended.
- Side-Fill applications
For side-fill applications, the MTD 112 will be simply located on top of a floor-standing SB
115. The configuration key selection switch on the controller will be "X.OVER".
6.5 PHASE CHECK
A phase check of every installation must be performed. This shall be done with a polarity
checking system, like, for instance, the SCV PC 80 MKII.
This system comprises two devices, a generator and a receiver. The checking procedure is
as follows:
1 Generator
a) disconnect one output of the mixing desk, and replace it by the output of the PC 80
generator.
b) the PC 80 generator should be switched on "HOT PIN 2"
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