Telex DOC02-DN9848 specifications 6.2.4Signal Invert, Delay and Output Level Page, Output Channels

Delays can be set in seconds, metres, or feet.

Output Channels

6.2.4Signal Invert, Delay and Output Level (Page 3)

Each output can be phase inverted by 180º (separate to the phase-alignment for cross-over), delayed for system alignment and the level attenuated or boosted.

Delay can be specified in terms of time or distance, as preferred. The unit of measurement is changed in the Set Up menu (see Section 7.6).

This level sets the baseline for the rotary Output Gain control

The Level entered here sets the baseline output level, i.e. the ‘zero’ value, for the rotary Output Gain controls. For example, if the Level is set to 6dB, the 0 represents 6dB. Turning the rotary Gain Control right/left will increase/decrease the level in a

proportional manner beyond 6dB (it is not directly additive since the gain is limited to +12dB). Hence, the Output Gain controls enable fine-tuning during a performance while the baseline output level is retained as a standard setting for future use.

To invert the output signal

Turn the left-hand knob clockwise until the Invert field reads ‘Yes’. The default setting is ‘No’ inversion.

To set the delay

Turn the centre knob slowly for step increments, or sharply to leap to the bottom/top of the range (1-2 sharp turns covers the whole range). The range is 0 to 1ms in steps of 20.83 s and 1ms to 300ms in steps of 0.01ms, or the equivalent in metres or feet.

To set the base level for the front panel Gain control

Turn the right-hand knob. The range is –40dB to +12dB in steps of 0.1dB, with an OFF position just ‘below’ –40dB. Setting the gain to OFF will mute the input signal.

6.2.5Phase Adjustment (Pages 4 and 5)

To meet the demands of a wide range of situations, the Klark Teknik DN9848 provides two all-pass filters with complementary control parameters for fine-tuning the phase response on each output, e.g. for alignment at cross-over. The first filter is presented as a “phase shifter” for which you can set a specific phase shift at a reference frequency, eg. the HPF or LPF (typically the cross-over 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, i.e. you can adjust the steepness of the transition by setting the Q value.

For detailed information on how these filters modify the signal, please refer to the Application Notes section.

To set a precise phase shift at a reference frequency

1Step to the Phase Angle/Ref page shown right.

2Turn the centre knob to select a phase angle between 0º and 180º. Turn the right-hand knob to set the reference frequency to HPF, LPF or one of the six PEQs (set in the subsequent Output menu pages).

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