Manual

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 “off”.
2) Set the “Low cut”on “off”.
3) Set the gain control “Coarse”on "20".
4) Set the gain control “Fine”on "0".
5) Turn all “Gain”controls on the EQ fully CCW and the in/out switch on "Out”.
6) Turn the “Threshold”fully CCW and the “Comp”in/out switch on "Out".
7) Turn the “Output gain”fully CW.
8) Apply a signal of 1 kHz, -20,0 dBU to the mike input.
9) Adjust the preset “Gain”P2 (on amp/psu PCB) to an output reading of +10,0 dBU.