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2
OPERATION
2.1
Operating Elements
MicVALVE
OVL
1
VALVE
-1
-3
2
-6
-9
3
INS
-12
4
PRE
-18
5
POWER
-24
6
48 V
-30
7
-40
8
Ø
-60
Input
Fine
dBu FS
Gain
Line
Mic
OFF
6
9
+24
+20
3
+14
+10
-40
0
0
15
dB
-30
-10
-20
[1]
[2]
[3]
[1] POWER
[2] Input dBu FS
[3] Fine Gain
Input
dBu FS
Line
Mic
OFF
+24
+20
3
+10
+14
-40
0
-30
-10
-20
Date printed: 9.2.2000
VALVE
INSERT
ROUTING
Bass
Angel
Valve Drive
Warmth
Zoom
Gain
Clip
5
5
5
5
4
6
4
6
4
6
4
6
3
7
3
7
3
7
3
7
10
12
2
8
2
8
2
8
2
8
8
1
9
1
9
1
9
1
9
0
10
0
10
0
10
0
10
warm
max.
dB
soft
cold
min.
hard
LEFT
[4]
[5]
[6]
Switches the unit on or off. The unit is ready to operate with the factory
default settings. The subsequent settings remain stored in a Flash EPROM
after switching the unit off (unit contains no battery).
Rotary switch for coarse input sensitivity setting in 10 dB steps. OFF posi-
tion between microphone and line sensitivity setting ranges.
Mic:
Range –40...+20 dBu
Line:
Range +14 dBu, +24 dBu
Potentiometer for fine input sensitivity setting.
Range of additional gain: 0...+15 dB.
Headroom:
The input sensitivity setting is calibrated in dBu per full-scale. It represents
the dBu value of an analog input signal which causes a full-scale output of
the A/D converter.
Example:
A studio works with +4 dBu nominal analog level and uses 12 dB head-
room; the peak level is therefore +16 dBu. The "Input dBu FS" rotary
switch [2] is set to +24 dBu (i.e. gain setting short by 8 dB), and the "Fine
Gain" potentiometer [3] increases the gain by 8 dB.
Fine
Gain
6
9
Sensitivity setting:
(Input dBu FS) – (Fine Gain)
12
24 dBu – 8 dB = 16 dBu
0
15
dB
OVL
48 V
1
VALVE
-1
-3
2
-6
-9
3
INS
-12
4
PRE
-18
5
-24
6
48 V
-30
Ø
7
-40
8
Ø
-60
Line
Input
Fine
Bass
Out
dBu FS
Gain
Warmth
Line
Mic
14
5
12
16
4
6
OFF
6
9
+24
+20
18
3
7
20
3
12
2
8
2
+14
+10
6
22
1
9
-40
0
4
24
0
10
0
15
dBu FS
dB
warm
cold
-30
-10
-20
[7]
(Panel) Setting [dBu] = Nominal level [dBu] + Headroom [dB].
[8]
[13]
[9]
[12]
[10]
[11]
VALVE
48 V
INSERT
ROUTING
Ø
Angel
Valve Drive
Line
Zoom
Gain
Clip
Out
5
5
5
14
4
6
4
6
4
6
12
16
3
7
3
7
3
7
10
18
8
2
8
2
8
8
20
1
9
1
9
1
9
6
22
0
10
0
10
0
10
4
24
max.
dB
soft
dBu FS
min.
hard
RIGHT
[14]
Full scale (+16 dBu)
12 dB Headroom
Nominal Level (+4 dBu)
Input signal
D19 MicVALVE
D19 SERIES
HOLD
SOFT
INT
48
WCLK
44
16DI
AES
VAR
16NS
AUTO
20BIT
MODE
SYNC
PEAK HOLD SOFT CLIP
[15]
[16] [17]
Operation E2/1
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