MG12/4FX
32
3.4 Frequency Characteristics
In the signal routes of the Table 3.3-1 to 3.3-6 indicated with
q
to
!0
, the 20Hz and 20kHz frequency response of each
output shall be within the range of 0 dB +1/-2.5 dB compared to the 1kHz (0dB).
The 20Hz level when the GAIN volume is Max shall be within the range of 0 dB +1.0/-4.5 dB compared to the 1kHz
(0dB).
, check every OUT when the signal is fed to CH1, and check only the ST L OUT when the signal is fed
to CH2 and other channels.
In the route
, check only the ST L OUT and the ST R OUT.
In the state of the Table 3.3-1 and 3.3-2, feeding 80 Hz -36dBu signal, and setting the GAIN to MIN, the STEREO L OUT
level obtained when the 80 switch is set to ON shall be within the range of -3dB +2/-2 dB compared to the level obtained
when the switch is set to OFF.
3.6 Channel Equalizer Characteristics
In the state checked in 3-2 above, check the output level obtained at GROUP 1 OUT in the case of CH INPUT and ST CH
INPUT L and at GROUP 2 OUT in the case of ST CH INPUT R when LO, HI and MID of INPUT are moved respectively.
Its level of each frequency shall be within the range specified in the table 3.6-1 compared to the output level obtained
when the EQ gain control is center click position.
If it is without the range, search the frequency, within the range of
±
20%, of that the level is within the range of Table
3.6-1.
＊ In measuring the C-R OUT L/R and PHONES L/R level, set the C-R/PHONES Output and Meter Select switch to 2TR IN.
Table 3.3-2 [dBu]
INSERT OUT
INPUT
INPUT Level
Gain
1-4
REC OUT L
REC OUT R
Mic 1-4
-80
Max
-20 ±2
ー
ー
CH INSERT IN 1
0
Unspecified
Unspecified
ー
+2.2 ±2
+2.2 ±2
CH INSERT IN 2-4
0
ー
+2.2 ±2
ー
Table 3.3-3 Input Terminal STEREO IN [dBu]
AUX
INPUT
INPUT CH
INPUT
Level
Gain
ST L OUT ST R OUT GROUP1
GROUP2
PRE OFF
PRE ON
EFFECT C-R OUT
＊2
-80
Max
0 ±2
＊1
0 ±2
＊1
+3 ±2
+3 ±2
+8 ±2
-2 ±2
+8 ±2
-1 ±2
Mic
5/6, 7/8
-36
Min
+1 ±2
＊1
ー
ー
ー
ー
ー
ー
5L, 7L
+3 ±2
ー
ー
ー
ー
ー
ー
PHONE JACK
6R, 8R
-54
Max
ー
+3 ±2
ー
ー
ー
ー
ー
e
r
w
Table 3.3-4 Input Terminal STEREO IN [dBu]
AUX
INPUT
INPUT CH
INPUT
Level
ST L OUT ST R OUT GROUP1
GROUP2
PRE OFF
PRE ON
EFFECT C-R OUT
＊2
9L, 11L
+4 ±2
ー
+4 ±2
ー
+3 ±2
-7 ±2
+3 ±2
0 ±2
PHONE JACK
10R, 12R
ー
+4 ±2
ー
+4 ±2
+3 ±2
-7 ±2
+3 ±2
ー
9L, 11L
+4 ±2
ー
ー
ー
ー
ー
ー
ー
PIN JACK
10R, 12R
-30
ー
+4 ±2
ー
ー
ー
ー
ー
ー
y
t
Table 3.3-5 Input Terminal RETURN L,R [dBu]
INPUT
INPUT Level
ST L OUT
ST R OUT
AUX OUT
L/MONO
+16 ±2
+16 ±2
+15 ±2
R
0
ー
+16 ±2
+9 ±2
i
u
Table 3.3-6 Input Terminal 2TR IN L,R [dBu]
INPUT
INPUT Level
ST L OUT
ST R OUT
C-R OUT L C-R OUT R PHONES L PHONES R
L
0 ±2
ー
0 ±2
ー
-11.5 ±2
ー
R
-27.8
ー
0 ±2
ー
0 ±2
ー
-11.5 ±2
o
!0
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