Fine Adjusting Equalizer Curve; Adjusting Bass And Treble Level; Selecting Bass Frequency - Pioneer DEH-P3500 Operation Manual

Level (dB)
Center frequency
  
#
c d
c d
  
  
  
a b
a b
  
HHHHHHHHHHHHHH
Q=2W
Q=2N
Frequency (Hz)

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#
c d
c
a b
a b
d