Notch Filters; Crossover; Post-Crossover Peq - dbx DriveRack 260 User Manual

DriveRack
The notch filter is the perfect tool for dropping out undesirable frequencies that may appear in
the input signal. Up to six Notch filters are available for all six outputs.
Notch On/Off
Turns the notch filters on and off.
Frequency (1 to 6) 20 to 20K
Selects the desired notch filter frequency of the selected notch filter.
Gain -36 to 6 dB
Sets the level of the selected notch filter. Set to +6dB to help find unwanted feedback, then set
to -3dB to -36dB to remove.
Q 16 to 128
Selects the Q of the selected notch filter.
The Crossover is used to divide the input signal into several frequency bands. This allows the
user to drive the speaker in its optimum frequency range and send each output separately for
more efficient use of amplifier power. The DriveRack 260 Crossover can be configured as a
2x2, 3, 4, 5, or 6 (stereo configurations) or 1x1, 2, 3, 4, 5 or 6 (mono configurations). Appendix
A.5 illustrates each of the available crossovers. The High-Pass or Low-Pass filter being edited is
indicated by the highlighted edge in the graphical display.
Frequency
Adjusts the frequency of the Low Pass or High Pass filter from 20Hz to 20KHz.
Type
Selects the crossover filter type. Selections are:
• BS (Bessel) with a slope of 6, 12, 18, or 24 dB/Octave.
• BW (Butterworth ) with a slope of 6, 12, 18, or 24 dB/Octave.
• LR (Linkwitz-Riley) with a slope of 12, 24, 36, or 48 dB/Octave.
Gain
Sets the level of the selected output(s). Range is from -Infinity to +20dB.
In addition to the pre-crossover EQ options within the signal path, the DriveRack 260 also offers
a 4-band parametric EQ after the crossover section. The parameters for the post-crossover EQ
are as follows and are user adjustable.
PEQ On/Off
Turns the PEQ module on and off.
Flatten/Restore
This parameter either flattens the PEQ or restores the PEQ to its original shape.
®
Detailed Parameters

4.8 Post-CROSSOVER PEQ

DriveRack® User Manual
Section 4

4.6 Notch Filters

4.7 Crossover

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