Alesis PEQ-450 manual Description of Controls, Gain, Frequency

basics of equalization • chapter 3

Description of Controls

There are five groups of knobs in vertical rows on each channel of the PEQ-450. These are labeled BAND 1 through BAND 5. Their function is as follows:

Gain

The GAIN G knob specifies the amount of boost or cut for that band. The range of the control is –18dB to +18dB. When the Gain is set to 0dB, that band will not affect the audio. The only exception to this is if the LPF or HPF functions are on. These functions supercede the gain setting on Band 1 and Band 5.

+12dB

+9dB

+6dB

+3dB

0dB

-3dB

-6dB

-9dB

-12dB

Q

Gain

Frequency

40Hz 200Hz 1kHz 10kHz 20kHz

Frequency

The FREQUENCY F knob controls the frequency that will be effected by that band. The range is 20Hz to 20kHz for each band. You can set several bands to the same frequency, if you like.

40Hz 200Hz 1kHz 10kHz 20kHz

The Diagram above shows the effect of sweeping the frequency control up and down.

28 PEQ-450 Reference Manual