Tube Tech EQ 1AM Parametric Mastering Equalizer - Manual (Page 4)

LYDKRAFT ApS
Mose Allé 20, DK 2610 Rødovre
Denmark
4
ADJUSTMENT PROCEDURE:
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 TP3 shall be + 150,0V.
Adjust with P202.
2) The DC voltage in TP1 shall be - 150,0V.
Adjust with P201.
ADJUSTMENT OFFSET IN TUBE-OP-AMPS:
1) The DC voltage in TP6 shall be <+/- 50mV.
Adjust with P1.
2) The DC voltage in TP7 shall be <+/- 50mV.
Adjust with P2.
ADJUSTMENT OF BASIC GAIN:
1) Apply a signal of 1 kHz, 0,0 dBU to the input of the equalizer.
2) Turn all gain controls at "0" and switches on "OUT" (except BYPASS).
3) Adjust the preset GAIN P3 (located on amp/psu PCB) to an output reading of 0,0 dBU.
ADJUSTMENT GAIN CONTROLS IN LOW/HIGH SHELVING AND BAND 1-3:
LOW SHELVING:
1) Apply a signal of 20 Hz, 0,0 dBU to the input of the equalizer.
2) Turn the GAIN-control a "0". Turn the freq. switch to "150Hz".
3) When switching between boost and cut, observe that the level is exactly the same
(<+/- 0,1dB).
Adjust with P2 located on the front PCB.
( 030507)