6
676
TU B E M I C
CHAN N E L STR I P
The User Interface & Connectors
Front Panel
PEAK
EQ
ENABLE
COMP/LIM
ENABLE
NARROW
CONTOUR
SIDECHAIN
ENABLE
OVEREASY
DIGITAL
OUTPUT
POWER
|
20dB
PAD
+48V
POLARITY
INVERT
80 Hz
LOW CUT
+
0
–
PEAK
LIMIT
GAIN
dB
+55
+25
+50
+40
-
∞
POST TUBE
ATTENUATION
dB
-
∞
0
-30
-5
-15
LOW
dB
-15
+15
0
MID
dB
-15
+15
0
HIGH
dB
-15
+15
0
AUTO
RELEASE
dB/sec
4k
10
400
1.5k
70
ATTACK
dB/msec
400
80
200
10
1
LIMITER
dBu
RED: 96kHz
GREEN: 48kHz
YELLOW: 44.1 kHz
-4
+2
+18
+10
OFF
THRESHOLD
dB
-40
0
+20
-10
-20
-30
+10
RATIO
1:1
∞
:1
1.5:1
3:1
2:1
1.2:1
8:1
MAKEUP
GAIN
dB
-20
+20
0
-10
+10
INSTRUMENT INPUT
ENABLE
CLA
S
S
“A
”
V
A
C
UU
M
T
U
B
E WI
T
H
H
IG
H
V
O
LT
A
G
E
G
A
IN
METER SELECTION
INPUT
OUTPUT
G.R.
FREQ
Hz
1k
100
8k
200
2k
7
8
2
1
4
5
6
3
1. Preamp
This is the preamp section, see
‘The Preamp Section’ on page 8
for further information.
2. EQ
This is the EQ section, see
‘The EQ Section’ on page 10
for further information.
3. Meter
This LED backlit VU meter displays input signal level, output signal level, or the amount of gain reduction applied by the
compressor and/or limiter.
4. Compressor
This is the compressor section, see
‘The Compressor & Limiter Section’ on page 12
for further information.
5. Power Switch
This switch turns the power to the 676 on and off.
6. Meter Select Buttons [INPUT, OUTPUT, G.R.]
These buttons select what will be displayed in the VU meter, the selections are: INPUT (input level), OUTPUT (output
level), and G.R. (gain reduction applied by compression/limiting).
7. Limiter
This is the limiter section, see
‘The Compressor & Limiter Section’ on page 12
for further information.
8. Sample Rate Select Button [96 kHz, 48 kHz, 44.1 kHz]
This button selects the desired sample rate frequency for the digital output signal when the Digital Option Card is
installed. Note that this button will serve no function if the Digital Option Card is not installed.