Ax3210P System Processing; The Low Range - PROEL AXIOM - VERSION 2.0 Manual

4. Sound design with AXIOM


4.5.1 AX3210P System Processing

AX3210P are three-way systems with a passive filter that feeds the two coaxial membranes of the
high frequency driver. AX3210P systems are processed as two-way: MID-L and HIGH. Available pre-
sets allow the combination of AX3210P satellite with EDGE121SP subwoofer from the EDGE Series or
AX1118SP subwoofer (suitable for suspension) from the AXIOM Series. Two different types of presets
are available: UP and DOWN. UP is suited for all long range configurations, while DOWN is better for
down-fill situations or whenever the range is shorter. Both presets can be used simultaneously in the
upper or lower part of the array in case of separated processing of those sections. With the presets the
operator can trim the gain of SUB, MID-L and HIGH and adjust the delay of HIGH, while the delay of
MID-L is automatically linked, as shown in figure 4.5.
When we deal with arrays with extreme curvatures that need to cover areas that are very close
together, we can resort to the attenuation (bass roll-off) of the system in the lower part of the array. This
technique can be employed only if the operator is aware that it shortens the virtual length of the array
and the directivity can not be controlled at low frequencies.
Generally, the response of an element for vertical arrays has the kind of tendency shown in figure 4.6,
with a certain degree of emphasis on high frequencies. This happens because as frequency increases,
the "active" portion of the array seen by the hypothetical audience gets smaller and smaller. Figure 4.7
shows this reduction which adds to the fact that, as the frequencies increase, the sources become
gradually more and more directive.
Thus, while at low frequencies the spectator represented by P hears the combination of several
sources of the array, at high frequencies he hears only the contribution of a single source. This explains
why the trend of the response of each single element is strongly emphasized at high frequencies, and
why, with the increase of the array, there is a natural equalization.
The AXIOM Series presets are optimized for the use of 6-8 systems per column; whenever a higher
or smaller number is employed, the timber balance needs to be reset through the TRIM control for the
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MID-L pass band .
4.5.2 AX2265P System Processing
AX2265P are two-way systems: MID-L and HIGH. Available presets allow the combination of AX2265P
satellite with AX1115SP subwoofer (suitable for suspension) from the AXIOM Series. Everything else is
the same as reported in the previous section.
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We already discussed phenomena of directivity control connected to the length of the array.







Figure 4.5: EDGE121SP+AX3210P preset structure
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4.5. SYSTEM PROCESSING