Alpine 3402 Manuel D'installation Et D'utilisation page 7

Equalization circuitries can have up to three variables:
@ Frequency Center: Determines which specific frequency is affected by the
equalization circuitry.
+15 dB a pecs
4 KASD N
0 dB <<< pet
Minimum\ X Maximum
Frequency JN 7 \/ Frequency
VX
-15 dB ALN
@ Frequency Bandwidth (Q-Factor): Determines how "wide" or "narrow" a frequency
range (around the center frequency) will be altered by the equalizer.
@ Boost/Cut: Magnifies or attenuates a specific frequency.
+15 dB
+5 dB
0 dB
-5 dB
-15 dB