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HELIX DN9848E Remote Control Software
User Guide
45
5.3.4 Phase Adjustment (Filters Screen)
To meet the demands of a wide range of situations, the Klark Teknik HELIX DN9848E provides two
all-pass filters with complementary control parameters for fine-tuning the phase response on each
output, for example, for alignment at crossover. The first filter is presented as a ‘phase shifter’ for
which you can set a specific phase shift at a reference frequency, for example, the HPF or LPF (typically
the crossover point). The second filter enables a 1st or 2nd order phase shift to be applied at a chosen
frequency. With 2nd order, the phase shift window can be shaped, that is, you can adjust the steepness
of the transition by setting the Q value.
To access the Filters screen (below), press Filters on the output channel control panel.
For detailed information on how these filters modify the signal, please refer to the Application Notes
section in the HELIX DN9848E Operators Manual.
To set a precise phase shift at a reference frequency
1 In the Phase Shift field on the Filters screen, adjust the Angle control
knob to select a phase angle between 0° and 180°.
2 Select the reference frequency from the Reference drop down list, for
example, “PEQ2” (see diagram right).