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Figure 2—Frequency Response
The frequency response of the system was
measured on axis in the farfield in an
anechoic environment using a swept sine-
wave signal. The Dx34 digital electronic
unit was used to provide the necessary
crossover filters, equalization and time de-
lay. One watt of power (2.83 volts rms at
250 Hz) was applied to the midband of the
low-frequency section. The sound-pres-
sure level was normalized for an equiva-
lent one meter distance.
5
TM
DeltaMax
DMS-1152/64 Loudspeaker System
4,000 Hz
8,000 Hz
Horizontal
Vertical
5 dB per division
5,000 Hz
10,000 Hz
6,300 Hz
16,000 Hz
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