Fbt DLM26 User Manual download pdf (Page 43)

High Pass_Q Filter: The Gain of these High Pass filters can be modified at their cutting

frequency corner depending from the value assigned to the Q parameter.

If we selected a High Pass filter with variable Q within EQ-1, then Low Cut Frequency has to be

set at a desired value of say 1000Hz with the NAV/Param.1 encoder and the Q at 3.5 using the

Param.3 encoder; the EQ sub-menu screen will show the following:

Once in the High Pass_Q Filter's edit screen all the filter's parameters can be modified using the

“NAV/Param.1” and “Param.3” encoders for editing the Filter's Low Cut Frequency and Q:

“Low Cut Frequency”: the selectable frequencies range is from 20Hz to 20kHz in steps of 1Hz

and can be adjusted by rotating the “NAV/Param.1” encoder.

“Q”: the selectable Q range is from 0.3 up to 20.0 in steps of 0.1 and can be adjusted by rotating

the “Param.3” encoder.

When in the Parameters Editing Page, pushing once more the ENTER Button, it is possible to

access the page of the Frequency Fast Setting:

Here, the NAV/Param.1” encoder will increment/decrement the Frequency value by step of one

thousand Hz, the Param.2 by steps of one hundred Hz and the Param.3 by steps of one Hz.

All Pass_1 Filter: Filters allowing a FLAT Amplitude response and adding a 90 Degree Phase

rotation at the selected Frequency.

If we selected a All Pass filter of the 1st order within EQ-1, then Phase Rotation Frequency has to

be set at a desired value of say 1000Hz with the NAV/Param.1 encoder; the EQ sub-menu screen

will show the following:

Once in the All Pass_1 Filter's edit screen, the “NAV/Param.1” encoder can be used for

editing/modifying the Filter's Phase Rotation Frequency:

“Phase Rotation Frequency”: the selectable frequencies range is from 20Hz to 20kHz in steps

of 1Hz and can be adjusted by rotating the “NAV/Param.1” encoder.

When in the Parameters Editing Page, pushing once more the ENTER Button, it is possible to

access the page of the Frequency Fast Setting:

Here, the NAV/Param.1” encoder will increment/decrement the Frequency value by step of one

thousand Hz, the Param.2 by steps of one hundred Hz and the Param.3 by steps of one Hz.

Out-1 Name EQ-1

->1000Hz ------dB Q= 3.5

Out-1 Name EQ-1

->Edit Freq = 1000Hz

Out-1 Name EQ-1

->1000Hz ------dB

Q=----

Out-1 Name EQ-1

->Edit Freq = 1000Hz

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Fbt DLM26 User Manual Page 43