page 7
9 Block diagram
IS
O
BALANCED
D
I O
U
T
UNBALANCED
L
INE
O
U
T
IS
O
O
U
TP
U
T
TRANSF
O
RM
ER
1/
4"
UNBALANCED
IN
STRUMENT
INPUT
G
A
IN
LO
W
F
RE
Q
BOO
ST
/
CU
T
H
IG
H
F
RE
Q
BOO
ST
/
CU
T
BOO
ST
G
A
IN
SI
G
/
CL
IP
IND
IC
AT
O
R
G
RO
UND
L
IF
T
INSE
RT
RE
TUR
N
REA
R
PA
N
EL
S
W
IT
CH
BOO
ST
O
N
/O
FF
M
U
TE
/
TUN
E
FR
O
N
T
PA
N
EL
K
N
O
B
FOOT
SW
IT
CH
CONTRO
L
TYPES
:
9V
@
150
m
A
INPU
T
(2.1
m
m
C
EN
TE
R
=
NE
G
)
PO
W
ER
S
U
PP
LY
IN
TE
RNA
L
32V
IN
SE
RT
SEN
D
100Hz
/
200Hz
2k
H
z
/ 4k
H
z
INSE
RT
NO
RM
AL
