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Section 4
4.6 Notch Filters
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.
4.7 Crossover
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.
4.8 Post-Crossover PEQ
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.
32
DriveRack® 260 User Manual
Detailed Parameters
DriveRack
®
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