Tuning Filters

Tuning Filters.

Standard Tuning Filters are available in System Optimiser, which match exactly the tools available in LINUS Control. Parametric EQ is also available in System Optimiser, as it is inside tuning groups in LINUS Control.

Tuning Filters can be found in Source Controllers and Control Groups.

These filters behave as follows:

Gain

The Gain control has the effect of turning the array(s) or stack(s) within the source up and down in level.

Delay

The Delay control has the effect of adding delay to the arrays(s) within the source.

Sizing

The Sizing filter is a low shelf filter that has a variable corner frequency and Q depending on the depth of the cut / boost. It is used to alter the perceived ‘size’ of the source. The filter is inactive when set to 1x. When the filter is set to 0.5x, the source will in theory ‘sound’ half as big in terms of its low frequency fingerprint. The step size is 0.1x. The maximum value is 2.0x, and the minimum value is 0.5x. The default value is 1.0x.

Array

The Array filter is a tilting equaliser with factory fixed corner frequencies and quality values. The filter is used as a corrective equaliser to alter the contour of the array. The default value for the Array filter is 8x, which is where the filter has no effect. Increasing the value of the Array filter has the effect of increasing the High Frequency output whilst simultaneously decreasing the Low Frequency output & vice versa. The Array filter would typically be set to the quantity of loudspeaker enclosures within the line array, however this is not a hard and fast rule, as the Frequency Response of the line array at a point is not solely influenced by the quantity of cabinets in the line. The maximum value for the Array filter is 20x and the minimum is 4x. Care should be used at these extremes of value, as it is very rare that these extreme values are required.

HF Shelf

The HF Shelf filter is a high shelving parametric with a factory fixed corner frequency (4.5kHz) and Q (0.7), suitable for adjusting the HF response of the loudspeakers assigned to the source.

Subsonic

The Subsonic filter is a low shelving parametric with a factory fixed corner frequency (40Hz) and Q (0.7), suitable for adjusting the sub response of the loudspeakers assigned to the source.

Low Boost

The Low Boost filter is a low shelving parametric with a factory fixed corner frequency (160Hz) and Q (0.7), suitable for adjusting the LF response of the array (s) assigned to the source.

Human

The Human filter is a parametric equaliser with a factory fixed corner frequency (3kHz) and Q (1.0), suitable for adjusting the high-mid response of the array (s) assigned to the source.

Parametric EQ (PEQ)

The PEQ section mimics the operation of the PEQ within LINUS Control. There are 4x available on each Source Controller and Control Group. Turn on a PEQ using the grey button for each filter.

  • Type: The type can either be set to PEQ (peaking parametric) or LSQ (Low Shelf, variable Q), or HSQ (High Shelf, variable Q). The default state is set to PEQ.

  • Gain: The gain control adjusts the gain of the filter. The gain can be adjusted through a range of -20.0dB through +12.0dB. The default gain is 0dB – IE no boost or cut.

  • Frequency: The frequency control adjust the centre frequency of the filter. The frequency can be adjusted through a range of 20Hz through 20kHz. The default frequency is 1000Hz.

  • Q: The Q control adjusts the quality factor of the filter. The Q can be adjusted through a range of 0.1 through 20. The default Q is 3.0.