OHM CRED Mark 2 2-4, User Manual

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System high pass filtering is provided for the input signal. This is the preferred location for high pass
filtering as it affects all outputs and can therefore improve inter-band phase relationships. Filter type
is selectable from Butterworth, Bessel, Linkwitz-Riley and Hardman. Filter slopes of up to 4th order or
24dB / octave are provided. Not all filter types are available in all slopes. For example 18dB / octave
Linkwitz-Riley filters do not exist.
The Hardman type filter is always described by its' order as the filter becomes progressively steeper
rather than following a linear slope so a dB/octave description is not accurate.
Parametric Equalisation
Eight sections of equalisation are provided, two shelving filters and six fully variable parametric
sections. define in the factory preset, will be shown briefly at the top of the screen.
High and Low shelving filters
A B C
A
B
C
Gain
0.0dB
12dB
Slope Freq
100Hz
EQ1
A In
!
!
!
Knob A: Frequency, 10.0Hz to 25.6kHz in variable steps
Knob B: Slope, 6 to 12dB / octave in 1dB steps
Knob C: Gain, +/-15dB in 0.2dB steps
The frequency is specified as point where the filter deviates by 3dB from the gain value.
Parametric Filters
A B C
A
B
C
Gain
0.0dB
1.4q
Slope
Freq
100Hz
EQ1
A
In
!
!
!
Knob A: Centre Frequency, 10.0Hz to 25.6kHz in variable steps
Knob B: Width, display selectable, Q or BW (Bandwidth)
BW adjustable from 0.05 to 5 octaves in variable steps
Q adjustable from 14.2 to 0.2 in variable steps
Knob C: Gain, +/-15dB in 0.2dB steps
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