Alesis CLX440 Specifications download pdf (Page 29)

chapter 3 • basics of equalization

PEQ-450 Reference Manual 29

is a ratio of the center frequency divided by the bandwidth. A Q

setting of 0.5 is a wide band of boost or cut, where a setting of 3 is a

narrow band of boost or cut. A setting of 0.25 is even narrower and is

typically used for notching a small frequency due to reduce noise.

The Q control of the PEQ-450 has a range of 0.25 to 16.

40Hz 200Hz 1kHz 10kHz 20kHz

Narrow Q Wide Q

The LOW SHELF setting effects everything below the specified

frequency. For example, if Band 1 is set for Low Shelf and the

frequency is set to 800Hz, everything from 800Hz on down will be

boosted or cut.

0dB

+3dB

+6dB

+9dB

+12dB

-12dB

-9dB

-6dB

-3dB

40Hz 200Hz 1kHz 10kHz 20kHz

Frequency

Gain

HIGH SHELF works the opposite way. When this function is turned on,

everything from the set frequency on up will be effected.

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Alesis CLX440 Specifications Page 29