Lydkraft ApS
Mose Allé 20, DK2610 Rødovre
Denmark
5
ADJUSTMENT PROCEDURE:
(980810)
CAUTION:
Before making any adjustment let the unit heat-up at least 30 min.
Always check the DC voltages at the power supply.
ADJUSTMENT OF PSU:
1) The DC voltage in TP202 shall be +240V.
Adjust with P201.
2) The DC voltage in TP203 shall be +150,0V.
Adjust with P202.
3) The DC voltage in TP204 shall be -150,0V.
Adjust with P203.
ADJUSTMENT OFFSET IN TUBE-OP-AMPS:
1) The DC voltage in TP1 shall be < +/-50mV.
Adjust with P1.
THE GRE SHALL BE MARKED BETWEEN 1.005-1.175
ADJUSTMENT OF BASIC GAIN:
1) Set the
“PAD”
on
“of
f
”
.
2) Set the
“Low
cut
”
on
“of
f
”
.
3) Set the gain control
“Coar
se”
on
"20"
.
4) Set the gain control
“Fi
ne”
on
"0"
.
5)
Tur
n
al
l
“
Gai
n”
controls on the EQ fully CCW and the in/out switch on
"Out
”.
6) Turn the
“Thr
eshol
d”
fully CCW and the
“Comp”
in/out switch on
"Out"
.
7) Turn the
“Out
put
gai
n”
fully CW.
8) Apply a signal of 1 kHz, -20,0 dBU to the mike input.
9)
Adj
ust
t
he
pr
eset
“
Gai
n”
P2 (on amp/psu PCB) to an output reading of +10,0 dBU.
