L-Acoustics MTD Series, Operator'S Manual

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L-ACOUSTICS MTD Manual V1.2 11/30/2004
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Figure 19: General guidelines for aiming MTD enclosures
5.3 ARRAYING MTD ENCLOSURES
Figure 20 shows SPL mappings at octave band frequencies for a single MTD enclosure (generated
using CATT-Acoustic modeling software), demonstrating the evenness of coverage and single point
source behavior that is obtained using coaxial technology.
Note: For color versions of figures 20, 21, 22 and 24 please see the MTD manual PDF file that is available
for download from www.l-acoustics.com
125 Hz
250 Hz
500 Hz
1 kHz 2 kHz 4 kHz
Figure 20: SPL mappings at octave band frequencies for a single MTD enclosure
Figure 21 shows SPL mappings at octave band frequencies for two MTD enclosures with a spacing of
0.5 meters. Uneven coverage above 500 Hz demonstrates the comb filtering interference effects that
arise due to path length differences as a function of listener position.