Alesis PEQ-450 User Manual
chapter 3
• basics of equalization
PEQ-450 Reference Manual
29
Q
Q
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.
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.
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.