Lexicon MPX G2 - Page 18

MPX G2 Service Manual
4-6
9. Set the Low Gain to 0, then set the Mid Gain to -25 using the front panel knob.
10. Verify the output level readings for each of the frequency settings in the table below.
Freq. Upper Lower
Hz (Vrms) dBu (Vrms) dBu
20,000 (1.0) 2.24 (.80) 0.12
16,000 (1.0) 1.68 (.70) -0.44
12,000 (.84) 0.66 (.65) -1.46
10,000 (.76) -0.15 (.60) -2.27
4,000 (.38) -6.12 (.30) -8.24
2,000 (.20) -11.86 (.15) -13.98
997 (.10) -17.65 (.08) -19.77
250 (.19) -12.21 (.15) -14.33
100 (.45) -4.67 (.35) -6.79
60 (.67) -1.22 (.53) -3.34
20 (1.1) 2.66 (.82) 0.54
11. Set the Mid Gain to +25 using the front panel knob.
12. Verify the output level readings for each of the frequency settings in the table below.
Freq. Upper Lower
Hz (Vrms) dBu (Vrms) dBu
20,000 (1.3) 4.53 (1.0) 2.41
16,000 (1.4) 5.08 (1.1) 2.96
12,000 (1.6) 6.07 (1.2) 3.95
10,000 (1.7) 6.88 (1.3) 4.76
4,000 (3.4) 12.82 (2.7) 10.70
2,000 (6.5) 18.54 (5.1) 16.42
997 (12.5) 24.18 (9.8) 22.06
250 (6.8) 18.93 (5.4) 16.81
100 (3.0) 11.48 (2.3) 9.36
60 (2.0) 8.16 (1.6) 6.04
20 (1.3) 4.37 (1.0) 2.25
13. Apply a 1kHz-sinewave signal at -30.5dBu (23 mVRMS).
14. Set the Mid Gain to 0, then set the High Gain to +50 using the front panel knob.