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Manual del Usuario
/ SF series /
User’s Manual
Cardioid Preset
This unique feature facilitates the configuration of two or three units to create a cardioid response pattern.
This is useful in situations where on-stage bass level projected from the subs needs to be kept to a
minimum.
To set-up a cardioid configuration with two stacked units, place the bottom unit facing the audience and
the top box facing the stage. Set the controls for level, polarity and cut-off frequency identically on both units.
Daisy-chain the signal from one unit to the other (do not activate the satellite output high-pass filter). Activate
the Cardioid Preset button on the box facing the stage. This provides the level and phase adjustments
necessary to cancel the rear projected sound waves “cleaning” the stage of unwanted bass.
To assemble a cardioid configuration with three stacked units, the procedure is basically the same. Place
the lower and top boxes facing the audience, the middle box facing the stage. Daisy-chain the signal, make
sure the level, polarity and cut-off frequency are the same on all the boxes and lastly, activate the Cardioid
Preset button on the box facing the stage.
There are 4 cut frequencies available: 50, 63, 80 and 100 Hz.
Low Pass Filter
Full Power
7.5A
5.5A
3.7A
1/3 Power
1/8 Power
Idle
0.6A
SF-30A
View of
with the cardioid presets
TM
DASnet
View of
with LowPass Filter presets
TM
DASnet
and the Frequency Response Curves
Current consumption: AC input =230 Vrms
Remember: the consumption at 115Vac is double than that at 230Vac
