Yamaha IM8-32, Service Manual

Page: 106 / 307

IM8-40/IM8-32/IM8-24
106
2-2 Gain
The output levels shall be within the range speci fi ed in the Table 2-2-1 – 2-2-13.
About the marks (#) and ($), refer to section 2-3 (Frequency Characteristics) or 2-10 (Distortion).
When PAN or BAL control is set to “Center”, do not turn on two or more switches of [1 – 2], [3 – 4], [5 – 6], [7 – 8], [ST] and
[MONO].
Table 2-2-1 CH INPUT A [dBu]
* Do not insert jacks to the INPUT B.
INPUT
INPUT
level
GAIN
26 dB
(PAD)
PAN
GROUP
1, 3, 5, 7
OUT
GROUP
2, 4, 6, 8
OUT
ST OUT
(L, R)
AUX1–8 OUT
MONO
OUT
MONITOR
OUT
(L, R)
*2
CH DIRECT
OUT
PHONES
OUT
(L, R)
*2 PRE OFF PRE ON
A
-80 MAX OFF
L
+4 ± 2
(#, $1)
–
+4.5 ± 2
(#, $1)
+10.5 ± 2
(#, $2)
+0.5 ± 2
+4.5 ± 2
(#, $2)
-9.5 ± 2
(#, $2)
–
-10.5 ± 2
(#, $2)
R –
+4 ± 2
(#, $2)
+4.5 ± 2 – – – – – –
Center – –
+2.0 ± 2
(#, $2)
– – – – -20 ± 2 –
-36 MIN OFF L
+4 ± 2
*1
(#)
– – – – – – – –
-10 MIN ON L +4 ± 2
*1
– – – – – – – –
*1 Measure only the GROUP 1.
*2 Turn on the PFL switch. The PFL indicator LED which is located in between the MONITOR control and LED METER, shall light up when the PFL
switch is turned on.
* The difference in the level between input channels should be 2 dB or less.
* The difference in the level between the GROUP 1 – 8 should be 2 dB or less. The same can be said of the AUX 1 – 8, ST L – R, MONITOR L – R
and PHONES L – R.
Table 2-2-2 CH INPUT B [dBu]
INPUT
INPUT
level
GAIN PAD
INSERT
OUT
B -80 MAX OFF -20 ± 2
Table 2-2-3 ST CH INPUT (Phone jacks) [dBu]
INPUT
(Phone)
INPUT
level
GAIN BAL
GROUP
1, 3, 5, 7
OUT
GROUP
2, 4, 6, 8
OUT
ST OUT
(L, R)
AUX1–8 OUT
MONO
OUT
MONITOR
OUT
(L, R)
*2 PRE OFF PRE ON
L & R
-54 MAX
L
+3.5 ± 2
(#)
– –
+7 ± 2
(#, $3)
-3 ± 2
(#, $3)
+1 ± 2
-10 ± 2
(#, $2)
R –
+3.5 ± 2
(#)
– – – –
-10 ± 2
(#, $2)
Center – –
+1.5 ± 2
(#, $)
– – – –
-10 MIN
L
+4 ± 2
*1
(#)
– – – – – –
R –
+4 ± 2
*1
(#)
– – – – –
*1 Measure only the GROUP 1 and 2.
*2 Turn on the PFL switch. The PFL indicator LED which is located in between the MONITOR control and LED ME-
TER, shall light up when the PFL switch is turned on.
* The difference in the level between input channels should be 2 dB or less.
* The difference in the level between the GROUP 1 – 8 should be 2 dB or less. The same can be said of the AUX 1 – 8
and ST L – R.
Table 2-2-4 ST CH INPUT (RCA PIN jacks) [dBu]
INPUT
(RCA PIN)
INPUT
level
GAIN
ST OUT
(L, R)
L
-54 MAX
+1.5 ± 2
R +1.5 ± 2
* Set the BAL control to center.
* Check that the difference in the level between input channels should be 2 dB or less.