Harman-Kardon GB4 Stereo Amplifier User Manual


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38 GB4 User Guide
EQEQ
HI
MID
HF
LO
MID
LF
15
12
9
6
33
6
9
12
15
-
+
0
15
12
9
6
33
6
9
12
15
-
+
0
550
13k
3k
80 1.9k
450
15
12
9
6
33
6
9
12
15
-
+
0
15
12
9
6
33
6
9
12
15
-
+
0
60dB
30
5
100Hz
GAIN
MIC
48V
PK
LINE
-20
=
10
5
0
5
10
15
20
30
+16
+8
0
-10
M
1
M
2
M
3
M
4
C
1
2
L
R
3
4
PFL
6
0
+
6
0
+
6
0
+
6
0
+
6
0
+
6
0
+
6
0
+
6
0
+
AUX1
AUX2
AUX3
AUX4
AUX5
AUX6
AUX7
AUX8
PAN
PRE
PRE
PRE
PRE
POST
POST
POST
POST
PRE
PRE
PRE
PRE
R
L
0
MUTE
1
EQEQ
HI
MID
HF
LO
MID
LF
15
12
9
6
33
6
9
12
15
-
+
0
15
12
9
6
33
6
9
12
15
-
+
0
550
13k
3k
80 1.9k
450
15
12
9
6
33
6
9
12
15
-
+
0
15
12
9
6
33
6
9
12
15
-
+
0
60dB
30
5
100Hz
GAIN
MIC
48V
PK
LINE
-20
=
10
5
0
5
10
15
20
30
+16
+8
0
-10
M
1
M
2
M
3
M
4
C
1
2
L
R
3
4
PFL
6
0
+
6
0
+
6
0
+
6
0
+
6
0
+
6
0
+
6
0
+
6
0
+
AUX1
AUX2
AUX3
AUX4
AUX5
AUX6
AUX7
AUX8
PAN
PRE
PRE
PRE
PRE
POST
POST
POST
POST
PRE
PRE
PRE
PRE
R
L
0
MUTE
1
EQEQ
HI
MID
HF
LO
MID
LF
15
12
9
6
33
6
9
12
15
-
+
0
15
12
9
6
33
6
9
12
15
-
+
0
550
13k
3k
80 1.9k
450
15
12
9
6
33
6
9
12
15
-
+
0
15
12
9
6
33
6
9
12
15
-
+
0
60dB
30
5
100Hz
GAIN
MIC
48V
PK
LINE
-20
=
10
5
0
5
10
15
20
30
+16
+8
0
-10
M
1
M
2
M
3
M
4
C
1
2
L
R
3
4
PFL
6
0
+
6
0
+
6
0
+
6
0
+
6
0
+
6
0
+
6
0
+
6
0
+
AUX1
AUX2
AUX3
AUX4
AUX5
AUX6
AUX7
AUX8
PAN
PRE
PRE
PRE
PRE
POST
POST
POST
POST
PRE
PRE
PRE
PRE
R
L
0
MUTE
1
EQEQ
HI
MID
HF
LO
MID
LF
15
12
9
6
33
6
9
12
15
-
+
0
15
12
9
6
33
6
9
12
15
-
+
0
550
13k
3k
80 1.9k
450
15
12
9
6
33
6
9
12
15
-
+
0
15
12
9
6
33
6
9
12
15
-
+
0
60dB
30
5
100Hz
GAIN
MIC
48V
PK
LINE
-20
=
10
5
0
5
10
15
20
30
+16
+8
0
-10
M
1
M
2
M
3
M
4
C
1
2
L
R
3
4
PFL
6
0
+
6
0
+
6
0
+
6
0
+
6
0
+
6
0
+
6
0
+
6
0
+
AUX1
AUX2
AUX3
AUX4
AUX5
AUX6
AUX7
AUX8
PAN
PRE
PRE
PRE
PRE
POST
POST
POST
POST
PRE
PRE
PRE
PRE
R
L
0
MUTE
1
EQEQ
HI
MID
HF
LO
MID
LF
15
12
9
6
33
6
9
12
15
-
+
0
15
12
9
6
33
6
9
12
15
-
+
0
550
13k
3k
80 1.9k
450
15
12
9
6
33
6
9
12
15
-
+
0
15
12
9
6
33
6
9
12
15
-
+
0
60dB
30
5
100Hz
GAIN
MIC
48V
PK
LINE
-20
=
10
5
0
5
10
15
20
30
+16
+8
0
-10
M
1
M
2
M
3
M
4
C
1
2
L
R
3
4
PFL
6
0
+
6
0
+
6
0
+
6
0
+
6
0
+
6
0
+
6
0
+
6
0
+
AUX1
AUX2
AUX3
AUX4
AUX5
AUX6
AUX7
AUX8
PAN
PRE
PRE
PRE
PRE
POST
POST
POST
POST
PRE
PRE
PRE
PRE
R
L
0
MUTE
1
EQEQ
HI
MID
HF
LO
MID
LF
15
12
9
6
33
6
9
12
15
-
+
0
15
12
9
6
33
6
9
12
15
-
+
0
550
13k
3k
80 1.9k
450
15
12
9
6
33
6
9
12
15
-
+
0
15
12
9
6
33
6
9
12
15
-
+
0
60dB
30
5
100Hz
GAIN
MIC
48V
PK
LINE
-20
=
10
5
0
5
10
15
20
30
+16
+8
0
-10
M
1
M
2
M
3
M
4
C
1
2
L
R
3
4
PFL
6
0
+
6
0
+
6
0
+
6
0
+
6
0
+
6
0
+
6
0
+
6
0
+
AUX1
AUX2
AUX3
AUX4
AUX5
AUX6
AUX7
AUX8
PAN
PRE
PRE
PRE
PRE
POST
POST
POST
POST
PRE
PRE
PRE
PRE
R
L
0
MUTE
1
EQEQ
HI
MID
HF
LO
MID
LF
15
12
9
6
33
6
9
12
15
-
+
0
15
12
9
6
33
6
9
12
15
-
+
0
550
13k
3k
80 1.9k
450
15
12
9
6
33
6
9
12
15
-
+
0
15
12
9
6
33
6
9
12
15
-
+
0
60dB
30
5
100Hz
GAIN
MIC
48V
PK
LINE
-20
=
10
5
0
5
10
15
20
30
+16
+8
0
-10
M
1
M
2
M
3
M
4
C
1
2
L
R
3
4
PFL
6
0
+
6
0
+
6
0
+
6
0
+
6
0
+
6
0
+
6
0
+
6
0
+
AUX1
AUX2
AUX3
AUX4
AUX5
AUX6
AUX7
AUX8
PAN
PRE
PRE
PRE
PRE
POST
POST
POST
POST
PRE
PRE
PRE
PRE
R
L
0
MUTE
1
EQEQ
HI
MID
HF
LO
MID
LF
15
12
9
6
33
6
9
12
15
-
+
0
15
12
9
6
33
6
9
12
15
-
+
0
550
13k
3k
80 1.9k
450
15
12
9
6
33
6
9
12
15
-
+
0
15
12
9
6
33
6
9
12
15
-
+
0
60dB
30
5
100Hz
GAIN
MIC
48V
PK
LINE
-20
=
10
5
0
5
10
15
20
30
+16
+8
0
-10
M
1
M
2
M
3
M
4
C
1
2
L
R
3
4
PFL
6
0
+
6
0
+
6
0
+
6
0
+
6
0
+
6
0
+
6
0
+
6
0
+
AUX1
AUX2
AUX3
AUX4
AUX5
AUX6
AUX7
AUX8
PAN
PRE
PRE
PRE
PRE
POST
POST
POST
POST
PRE
PRE
PRE
PRE
R
L
0
MUTE
1
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