dbx DriveRack PA2 - Manual (Page 46)

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summed, a 3 dB increase in level will be created at the crossover frequency. LR stands for Linkwitz-Riley. When two
Linkwitz-Riley filters are summed, there is no increase in level around the crossover frequency, which makes these type of
filters very popular. The numbers represent the slope rate per octave.
• POLARITY [NORMAL, INVERTED]
Inverts the polarity of the selected PA2 outputs. Polarity inversion is used to match driver polarity in systems which require it.
See ‘Manual System Optimization Tips’ on page 18 for more information on polarity inversion.