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MG8 / 2FX
QQ
3 7 63 1515 0
3.3 Frequency Characteristics
In the signal routes of the Table 3.2-1 to 3.2-6 indicated with (1) to (12), 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).
*In the route (1), 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 (4), check only the ST L OUT and the ST R OUT.
3.4 HPF
In the state of the Table 3.2-1 and 3.2-2, 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 -3 dB +2/-2 dB compared to the
level obtained when the switch is set to OFF.
3.5 Channel Equalizer Characteristics
In the state checked in 3.1 above, check the output level obtained at ST L OUT in the case of CH INPUT and ST CH
INPUT L and at ST R 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 3.5-1 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
3.5-1.
Table 3.5-1 [Unit: dB]
EQ control
HI
MID
TE
L 13942296513
LO
3.6 Crosstalk
Setting the VR to the nominal position, and turning the PAN control(BAL control in the case of ST CH INPUT)
counterclockwise fully, the level of the leakage to ST R OUT shall be -50dBu or less when the output level of ST L
OUT is +20dBu.
Also turning the PAN control clockwise fully, the level of the leakage to ST L OUT shall be -50dBu or less when the
output level of ST R OUT is +20dBu.
In measuring the CH7 to CH10, the level of the leakage to ST OUT shall be -34dBu or less.
3.7 PEAK LED light-up level
Each LED shall light-up when a signal specified as below is fed to the MIC input.
Table 3.7-1 [Unit: dBu]
INPUT
MIC
3.8 Meter LED lighting check
PEAK LED lights up, when ST output level reaches +17.5±2dBu.
0 LED lights up, when ST output level reaches +4±2dBu.
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Operate the MASTER VR and check that LED light up in order from "-20" to "PEAK".
3.9 Distortion Factor
In the signal routes of the Table 3.2-1 to 3.2-6 indicated with (1) to (12)(except (3),(4)), set the VR of INPUT and
.
MASTER to the Nominal Position, and set the GAIN to the position specified in the Table (except PHONES).
Then, feeding each 20Hz,1kHz and 20kHz signal, the distortion shall be less than 0.1%, when the output signal level is
+14dBu.
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EQ GAIN
Applied frequency
MAX
10kHz
MIN
MAX
2.5kHz
MIN
MAX
100Hz
MIN
PEAK LED
-43 ± 2
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8
Variation width
+12 ± 2
-12 ± 2
+15 ± 2
Q Q
3
6 7
1 3
-15 ± 2
+12 ± 2
-12 ± 2
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2 9
9 4
2 8
1 5
0 5
8
2 9
9 4
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9 9
2 8
9 9
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