Telex DOC02-DN9848 6.2.7Parametric Equalisation Pages 2 to, 6.2.8Compression Page, To set a PEQ

Output Channels

6.2.7Parametric Equalisation (Pages 2 to 13)

The DN9848 provides six parametric equalisation stages on each output channel, for equalising the output signal in respect of loudspeaker and/or system characteristics. The first and last of these PEQ sections can be alternatively be configured for lower and upper shelving equalisation. All the PEQ sections can be used across the full range from 20Hz to 20kHz and are set independently via their own menu page.

Any PEQ can be used as the reference frequency for the Phase Shifter (see Section 6.2.5)

To set a PEQ

1Set a centre frequency (21 steps per octave) and bandwidth (0.08 to 3 Oct) for the PEQ section, using the left and centre knobs, respectively.

or

Switch to an LEQ/HEQ setting with a 6dB or 12db slope by turning the centre knob clockwise beyond 3 Oct (see below). Use the left-hand knob to set the LEQ/HEQ frequency.

2Turn the right-hand knob to set an attention/boost level between -12dB and +12dB.

If a PEQ section is not needed in the set up, set its level to 0dB.

6.2.8Compression (Page 14)

Each output has an independent full range compressor to improve the audio dynamics and/or reduce louder signal levels to avoid loudspeaker damage. The compressors are variable ratio and can be set to a hard knee characteristic for a sharp gain reduction response at the compression threshold, or soft knee for a more ‘musical’ response.

To set the compressor parameters

1On the first compressor menu page, use the centre knob to select a threshold value in the range –10dB to +21dB, and the right-hand knob to set a ratio from 1:1 to 5:1.

2Turn the left-hand knob clockwise to access the first sub- menu page. Use the centre knob to select a hard or soft knee characteristic and the right-hand knob to set the bypass state to No so that the compressor is included in the signal path. The relative position of the compressor threshold to the limiter threshold will be indicated by a lit segment at the meter (provided the compressor threshold is below the limiter threshold).

Lit segment shows the compressor position relative to the limiter threshold

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