30
ML4000
User Guide
STEREO INPUT and EQ
Two dual input stereo channels are provided to the
right of the master section on standard models. A
further four are provided to the right of this on the
optional ‘B’ version consoles. These extra four
stereos replace the standard model mono channels.
GAIN
. Adjusts the input sensitivity to match the
connected line level source to the internal 0dBu
operating level of the channel. Provides a variable
24dB range from –6dB attenuation to +18dB gain.
Inputs A and B have independent gain controls so
that you can switch between sources without having
to re-adjust the gain, or mix them together in the
required balance. The gain should be set so that
the channel meter averages ‘0’ with loudest
moments lighting ‘+6’. Reduce gain if the red peak
meter lights.
A (B) ON
. Turns the input source on or off.
Source A and B are mixed together when A ON and
B ON are both pressed. No source is selected if
both switches are off.
MONO L (R)
. With both switches up the selected
source is routed through the channel in stereo.
Press MONO L to select the left input as a mono
source. Press MONO R to select the right input as
a mono source. Press both switches to sum the left
and right inputs together as a mono source.
EQUALISER
. The stereo channel equaliser
provides adjustment of 4 independent frequency
bands. Each has a cut /boost control.
HF
The high frequency band has a shelving
response that cuts or boosts the higher (treble)
frequencies by up to 15dB. The shelf turning point
is 12kHz.
HM
The higher mid band has a bell shaped
peak/dip response that cuts or boosts by up to
15dB. The centre frequency is 2.5kHz. The bell
has a Q (width) of 1.8.
LM
The lower mid band is similar to the high mid
but has a lower centre frequency at 250Hz.
LF
The low frequency band has a shelving
response that cuts or boosts the lower (bass)
frequencies by up to 15dB. The shelf turning point
is 60Hz.
E5
EQ IN
. Switches the equaliser in or out.
10k
1kHz
100
30k
10
250Hz
2.5kHz
LF EQ
-15
-20
-10
-5
0dB
+5
+10
+15
+20
HF
-15
-15
-15
-15
LF
+15
EQ IN
LM
+15
+15
HM
+15
-6
-6
GAIN
L+R
-3
GAIN
-3
10
MONO L
MONO R
B
18
ON
A
18
3
ON
10
3
Содержание ML4000
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