JBL 260 User Manual

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.

Turns the notch filters on and off.

Selects the desired notch filter frequency of the selected notch filter.

Sets the level of the selected notch filter. Set to +6dB to help find unwanted feedback, then set 
to -3dB to -36dB to remove.

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. 

Adjusts the frequency of the Low Pass or High Pass filter from 20Hz to 20KHz.

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.

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.

Turns the PEQ module on and off.

This parameter either flattens the PEQ or restores the PEQ to its original shape.