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mixer measurements
i decided to run some measurements on the Behringer mixer i just got then
compare it to some other mixers. here's what i got: Behringer MX 2642A % THD 50 Hz .048 100 Hz .05 1000 Hz .05 10 kHz .058 15 kHz .064 IM distortion (60 & 7kHz) .06 % noise* .0355 mv Soundcraft F1-16 %THD 50 Hz .048 100 Hz .05 1000 Hz .052 10 kHz .06 15 kHz .068 IM .052 % noise* .035 mv Mackie 32-8 %THD 50 Hz .052 100 Hz .058 1000 Hz .05 10 kHz .064 15 kHz .072 IM .06 % noise* .09 mv no mixer: straight from sig gen to analyzer %THD 50 Hz .046 100 Hz .048 1000 Hz .05 10 kHz .056 15 kHz .062 IM .052 % noise* .014 mv *methodology: noise measurements made referenced to -40 dB input and 0 dB output with sig gen muted and one ch open all others down. all other measurement made with 150 ohm source at -40 dB into mic input. mixer output set to 0 dB into active balanced (transformerless) meter. tone controls all at neutral. in "straight through" measurements the sig gen output was increased by 20 dB. conclusion: i was rather surprised at how well the 2642 tested relative to the other units. the online spec sheet claims a THD of .007% @ +4 dB i wonder if its an actual measurement or is derived in some fashion. my equipment seems to be functioning within its specified tolerances. http://www.pi-usa.com/ag51/ag51g.htm#SPECIFICATIONS |
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