Channel Equalizer Characteristics; Graphic Equalizer Characteristics; Crosstalk - Yamaha MG16/6FX Service Manual

MG16/6FX

4.5 Channel Equalizer Characteristics

In the state checked in 4.1 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 4.5-1 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 4.5.1.
Table 4.5-1 CH1-8 [dB]
EQ Level control
HIGH
MID
LOW
Table 4.5-2 CH9-16 [dB]
EQ Level control
HIGH
HI-MID
LO-MID
LOW

4.6 GRAPHIC EQUALIZER Characteristics

In the state checked in 4.1 above, GEQ switch to ON and set the GEQ fader to MIN or MAX,then check the output level
obtained at ST OUT.
Its level of each frequency shall be within the range specified in the table 4.6-1 compared to the output level obtained when
the GEQ fader 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 4.6-1.
Table 4.6-1 [dB]
Applied frequency
MAX
Variation width
MIN

4.7 Crosstalk

Setting the Fader to the nominal position and each input channel ON switch to ON, and turning the PAN control shall be
-50dBu or (BAL control in the case of ST CH INPUT) counterclockwise fully, the level of the leakage to ST R OUT less
when the output level of ST 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.
32
f control Applied frequency
MAX –
MIN –
MAX
MAX
MIN
MAX
MIN
MIN
MAX –
MIN –
Applied frequency
MAX
10kHz
MIN
MAX
3kHz
MIN
MAX
800Hz
MIN
MAX
100Hz
MIN
125 250
125Hz 250Hz
Variation width
+12 ± 2
10kHz
-12 ± 2
+15 ± 2.5
5kHz
-15 ± 2.5
+15 ± 2.5
250Hz
-15 ± 2.5
+12 ± 2
100Hz
-12 ± 2
Variation width
+12 ± 2
-12 ± 2
+15 ± 2.5
-15 ± 2.5
+15 ± 2.5
-15 ± 2.5
+12 ± 2
-12 ± 2
500 1k 2k
500Hz 1kHz 2kHz
+12 ± 2
-12 ± 2
4k 8k
4kHz 8kHz