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Testing IEM phase polarity

doctorjuggles

Active Member
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Mar 25, 2019
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I’m 99% sure one of my IEMs is wired out of phase (using the standard “in phase/out of phase” sound tests one can find online) but if I want to be 100% sure, it there anything I can do to test it?
 

RayDunzl

Grand Contributor
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Mar 9, 2016
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If you have a mic, run a sweep from REW on each driver.

You just might see an inverted impulse response on one of them.

(no guarantee, I don't have an IEM, but it works for speakers)
 
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