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6.3.3 OPERATION
Operate DSA similarly to any other loudspeaker. This normally involves
setting the source levels to achieve the desired output as well as
applying external equalization or other signal processing to achieve
certain desired results. DSA’s internal signal processing, set using
DSAPilot, should not be used for in performance adjustments.
6.4 Operational ‘ DOS’ and ‘DONTS’
6.4.1 EQUALIZATION
If equalization is required for tailoring the frequency response during
performances, use an external equalizer such as a good quality 1/3
octave graphic equalizer, for this purpose. Connect the equalizer in-
line with the DSA input signal. The DSA input equalization, adjusted
via DSAPilot, should be used only for overall tuning adjustments
made during initial system set-up.
6.4.2 MAXIMUM OUTPUT
At the highest usable operating levels, the LED Indicator on the
loudspeaker and in the level meters in DSAPilot should show no
more than occasional clipping. Occasional clipping means the LED
indicator, if enabled, and DSAPilot meter will indicate clipping at
most once every few seconds.
6.4.3 FREQUENCY CONTENT
Do not attempt to boost low frequencies below about 100 Hz. The 4
in drivers DSA loudspeaker are not designed to replace subwoofers if
strong, very low frequency response is needed. Boosts below 100 Hz
can greatly increase the cone excursion and can use up much of the
amplifier power available. These conditions can significantly reduce
the overall maximum output.
6.4.4 INPUT LIMITING
The input limiting should not be used for driver protection. There is
fixed, internal compression and limiting to help prevent driver
damage from excessive amplifier output levels. These limiters will
automatically activate in the presence of excessive signals. The LED
indicator can be enabled to indicate activation of the protection
circuits. See Section 6.1.2.
6.4.5 DSAPILOT ADJUSTMENTS
Do not make adjustments using DSAPilot during normal operation.
The reason is that changes to the DSA loudspeaker’s electronics
requires successively updating all internal parameters. Because there
is a complete DSP engine for each transducer, updates can take a
noticeable amount of time. Also depending on the magnitude of any
changes, sonic artifacts may result while the updates are taking place.
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