Yamaha Programmable Mixer 01 - Equalizer (EQ) Features

EQ
21
ProMix 01 User’s Guide
1. Select a channel using the
[SEL] buttons.
2. Press [EQ LOW], [MID], or
[HIGH].
The EQ LCD function appears.
3. Press [EQ LOW], [MID], or
[HIGH] repeatedly to select
the parameters for each
band.
You can also use the cursor
buttons to select parameters.
4. To turn the EQ ON or OFF,
press [ENTER] or select the
ON/OFF parameter and use
the PARAMETER wheel.
EQ
ProMix 01 EQ is three-band fully parametric, with variable Q, fre-
quency, gain, and ON/OFF parameters. Initially the EQ is configured
as a conventional three-band EQ, with shelving-type low and high
and peaking-type mid. However, high and low can also be configured
as peaking types. EQ can be applied to the inputs channels, stereo
input channel, RTN1, RTN2, and stereo output. Stereo-pair input
channels are controlled together.
Shown below is the EQ LCD function. The top-half shows the EQ
response curve, the bottom-half, the EQ parameters. The vertical dot-
ted line indicates the frequency of the selected band.
EQ parameters are:
Q is stated in musically intuitive octave values. The following table
compares octave values with conventional decimal Q values.
LOW MID HIGH
Q
1/6, 1/4, 1/3,
1/2, 3/4, 1, 3/2,
2, 3 oct, SHELF
1/6, 1/4, 1/3,
1/2, 3/4, 1, 3/2,
2, 3 oct
1/6, 1/4, 1/3,
1/2, 3/4, 1, 3/2,
2, 3 oct, SHELF
9 steps
F 32 Hz–1 kHz 32 Hz–18 kHz 1 kHz–18 kHz 1/6 octave steps
G
±
15 dB
±
15 dB
±
15 dB 1 dB steps
Octave Q
1/6 8.65
1/4 5.76
1/3 4.32
1/2 2.87
3/4 1.90
1 1.41
3/2 0.92
2 0.67
3 0.40