Lexicon MPX G2 Service Manual page 35

3. Apply a 1kHz-sinewave signal at -17dBu (109 mVRMS).
4. Set the Analyzer for a 0dB reference.
5. Verify the output level reading is between at the following frequency settings.
Freq. Upper
Hz (Vrms) dBu (Vrms)
20,000 (.030) -28.47 (.020)
16,000 (.080) -19.32 (.050)
12,000 (.40) -6.73 (.20)
10,000 (1.0) 2.40 (.60)
4,000 (1.2) 4.09 (.80)
2,000 (1.0) 2.56 (.65)
997 (1.0) 2.06 (.60)
250 (1.1) 3.28 (.70)
100 (1.4) 5.05 (.20)
60 (.40) -5.48 (.25)
20 (.03) -27.41 (.02)
6. Move the cable from the Right Insert Return jack to the Left Insert Return jack.
7. Move the cable from the Right Main Output jack to the Left Main Output Jack.
8. Verify the output level reading is between at the following frequency settings.
Freq. Upper
Hz (Vrms) dBu (Vrms)
20,000 (.030) -28.47 (.020)
16,000 (.080) -19.32 (.050)
12,000 (.40) -6.73 (.20)
10,000 (1.0) 2.40 (.60)
4,000 (1.2) 4.09 (.80)
2,000 (1.0) 2.56 (.65)
997 (1.0) 2.06 (.60)
250 (1.1) 3.28 (.70)
100 (1.4) 5.05 (.20)
60 (.40) -5.48 (.25)
20 (.03) -27.41 (.02)
Note: For the remaining tests in the Speaker Sim section, we will only be measuring the Left Output.
Frequency Response Measurement set at 3.0K and HPeak On:
1. Press the Yes button 2 times. The display reads: Devel HPeak Off. Turn the knob CW to turn Peak On.
2. Disable all Filters on the Distortion Analyzer.
3. Apply a 1kHz-sinewave signal at -17dBu (109 mVRMS).
4. Set the Analyzer for a 0dB reference.
Lower
dBu
-32.59
-23.44
-10.85
-1.72
-0.03
-1.56
-2.06
-0.85
0.93
-9.60
-31.53
Lower
dBu
-32.59
-23.44
-10.85
-1.72
-0.03
-1.56
-2.06
-0.85
0.93
-9.60
-31.53
Lexicon
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