Tube Tech MMC 1A MIC Preamp and DI and multiband compressor - Manual (Page 4)

Lydkraft ApS
Mose Allé 20, DK2610 Rødovre
Denmark
4
ADJUSTMENT PROCEDURE:
CAUTION:
Before making any adjustment let the unit heat-up at least 10 min.
Always check the DC voltages at the power supply.
1) The DC voltage in TP201 shall be +280V (265-295).
2) The DC voltage in TP203 shall be +15,0V (14,7-15,3).
3) The DC voltage in TP204 shall be -15,0V (14,7-15,3).
4) The DC voltage in TP207 shall be +238V (236,5-239,5)
ADJUSTMENT OF PSU:
1) The DC voltage in TP202 shall be +240V.
Adjust with P202.
THE GRE SHALL BE MARKED 1.005-1.175
ADJUSTMENT OF BASIC GAIN:
1) Set the bypass switch in “of f ”.
2) Set the
“ OUTPUT GAI N”on “ +10”
.
3) Set the Low-Mid and High “Gai n” on “+10”.
4) Apply a signal of 1 kHz, -10,0 dBU to line input.
5) Adjust the preset
“Gai n”P1 (on amp/psu PCB) to an output reading of 0,0 dBU .
6) Set the bypass switch in “on”and adjust P2 (marked as R34 on the amp/psu PCB)
to an output reading of +10,0 dBU.
(050610)