Unofficial Mackie User Forums > Speakers

C300z - phase inverted?

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Greg C.:

--- Quote from: lightguy48 on June 30, 2014, 03:08:18 AM ---Except why would my Yorkville's and some old Crate cabinets all show the polarity was correct?

Just odd....

--- End quote ---

Every cabinet design is different. Driver spacing and horn design will affect how the overlapping frequencies interact in terms of phase which can trick the close up mic used by the polarity tester. I'll just say again that the only way to get truly reliable polarity testing is to test one bandpass at a time with the adjacent one(s) turned off.

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