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Справочник Пользователя для Mackie 1220I

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Owner's Manual   
19
24. HIGH EQ
The high EQ provides up to 
15 dB of boost or cut above  
12 kHz, and it is also fl at (no 
boost or cut) at the detent. Use 
it to add sizzle to cymbals, an 
overall sense of transparency, 
or an edge to keyboards, vocals, guitar and bacon frying. 
Turn it down a little to reduce sibilance or to mask tape 
hiss.
25. MID EQ FREQUENCY (Ch. 1-4)
This knob sets the center frequency of the mid 
EQ level control [26]. This is sweepable from 100 Hz to  
8 kHz.
Once this is set, the mid EQ level can be adjusted with 
the mid EQ level control.
Most of the root and lower harmonics that defi ne 
a sound are located in the 100 Hz–8 kHz frequency 
range, and you can create drastic changes with these 
two knobs. Many engineers use mid EQ to cut midrange 
frequencies, not boost them. One popular trick is to 
set the mid fully up, turn the frequency knob until you 
fi nd a point where it sounds just terrible, then back the 
mid down into the cut range, causing those terrible  
frequencies to disappear. Sounds silly, but it works. 
Sometimes.
26. MID EQ LEVEL (Ch. 1-4)
The mid EQ provides up to 
15 dB of boost or cut, and it is 
also fl at (no boost or cut) at 
the detent. The frequency at 
which the cut or boost occurs is 
set by the mid EQ frequency  
control [25].
27. MID EQ LEVEL (Ch. 5-12)
The mid EQ provides up to 15 dB of boost or cut at  
2.5 kHz, and is fl at at the detent.
28. LOW EQ
The low EQ provides up to  
15 dB of boost or cut below  
80 Hz. The circuit is fl at at the 
center detent position. This 
frequency represents the punch 
in bass drums, bass guitar, fat 
synth patches, and some really serious male singers who 
eat raw beef for breakfast.
20
Hz
100
Hz
1k
Hz
10k
Hz
20k
Hz
–15
–10
–5
0
+5
+10
+15
20
Hz
100
Hz
1k
Hz
10k
Hz
20k
Hz
–15
–10
–5
0
+5
+10
+15
20
Hz
100
Hz
1k
Hz
10k
Hz
20k
Hz
–15
–10
–5
0
+5
+10
+15
10
dB
30
20
10
40
50
5
5
U
60
O
O
ALT 3/4
10
dB
30
20
10
40
50
5
5
U
60
O
O
ALT 3/4
10
dB
30
20
10
40
50
5
5
U
60
O
O
ALT 3/4
10
dB
30
20
10
40
50
5
5
U
60
O
O
ALT 3/4
10
dB
30
20
10
40
50
5
5
U
60
O
O
ALT 3/4
OL
- 
20
OL
- 
20
OL
- 
20
OL
- 
20
OL
- 
20
SOLO
SOLO
SOLO
SOLO
SOLO
MUTE
MUTE
MUTE
MUTE
MUTE
48V
48V
48V
48V
U
+
15
-
15
U
+
15
-
15
ON
YX MIC PRE
 
PRE
POST
HI-Z
LINE
BAL/UNBAL
CTRL - RM O
 SEND
EQ
MID
2.5kHz
HIGH
12kHz
PRE
POST
SEND
L
R
(MONO)
L
1
2
75Hz
18dB/OCT
3
75Hz
18dB/OCT
4
ON
YX MIC PRE
 
PRE
POST
HI-Z
LINE
 SEND
ON
YX MIC PRE
 
PRE
POST
 SEND
ON
YX MIC PRE
 
GAIN
GAIN
GAIN
GAIN
+
40dB
U
-
20dB
U
20
30
40
60
+
40dB
U
-
20dB
U
20
30
40
60
+
40dB
U
-
20dB
U
20
30
40
60
+
40dB
U
-
20dB
U
20
30
40
60
U
+15
-15
U
+15
-15
PRE
POST
 SEND
1k
100
8k
HIGH
12kHz
U
+
15
-
15
LOW
80Hz
EQ
AUX
2
1
L
R
PAN
1
LINE
2
LINE
4
LINE
3
LINE
BAL/UNBAL
BAL/UNBAL
BAL/UNBAL
BAL/UNBAL
BAL/UNBAL
GAIN
+
20dB
-
20dB
U
MAX
O
O
MAX
O
O
U
+15
-15
LOW
80Hz
AUX
2
1
L
R
PAN
MAX
O
O
MAX
O
O
2
3
4
5-6
LINE IN 5-6
MID
FREQ
U
+
15
-
15
U
+
15
-
15
1k
100
8k
HIGH
12kHz
U
+
15
-
15
LOW
80Hz
EQ
AUX
2
1
L
R
PAN
MAX
O
O
MAX
O
O
MID
FREQ
U
+
15
-
15
U
+
15
-
15
1k
100
8k
HIGH
12kHz
U
+
15
-
15
LOW
80Hz
EQ
AUX
2
1
L
R
PAN
MAX
O
O
MAX
O
O
MID
FREQ
U
+
15
-
15
U
+
15
-
15
1k
100
8k
HIGH
12kHz
U
+
15
-
15
LOW
80Hz
EQ
AUX
2
1
L
R
PAN
MAX
O
O
MAX
O
O
MID
FREQ
1
9
10
18
19
20
21
22
24
25
26
28
29
29
30
31
33
34
32
12
27
11