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Old 26th February 2010, 04:24 PM   #1
Tector is offline Tector  United States
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Default Behringer Mixer and Speaker Testing

I am about to send out my Behringer UB1202 pre-amp/mixer to have it and my microphone calibrated for the purpose of speaker testing. What do you suggest I do to make sure my equalizer pots don't move after the calibration. I would think that any change to the equalization would invalidate my calibration.
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Old 27th February 2010, 03:21 AM   #2
Enzo is offline Enzo  United States
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You would modify the mic channel you are using to bypass the EQ stage.

I don;t recall on that one, do the EQ controls have a center detent? If so, that would be a reasonable protection.

How does one calibrate a little mixer like that? other than the user controls, it has no adjustments. Or are you getting a response curve drawn or something?


The line channels have no EQ, I believe. You might use one of those, but you'd need a mic pre. And if you had a mic pre, then you wouldn;t need the mixer.

Where are you sending the output?
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Old 27th February 2010, 11:13 AM   #3
Tector is offline Tector  United States
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Thank you for the reply. The calibration is in the form of a file that then gets input to your measurement software and the software adjusts your input based on the calibration file. I am using Soundeasy which uses my computer's sound card for input and output. I am using the mixer for a mic pre-amp only. According to the schematic in the owners manual, the equalizer is included in the line outs. The equalizer knobs do have detents, and I may rely on those for protection.
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Old 1st March 2010, 01:41 AM   #4
Enzo is offline Enzo  United States
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Not line outs, line ins.

Your mic in channels all have EQ controls. But the line in channels do not.

But as I said, if you used the non-EQed line ins you would need a mic pre, which if you had one would then make the mixer unneeded.
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