How do you check phasing?

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How do you check phasing?
by Jay Stephen on Jan 6, 2003 at 2:24:09 pm

With the number of interfaces, "custom" made patch cords, varying standards, etc., how do you confirm that all signals (polarities?) are in phase in the recording chain?

Thanks.

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Re: How do you check phasing?
by DSE on Jan 6, 2003 at 2:32:33 pm

with either a meter, or by listening. Switching a stereo source to mono will immediately show out of phase signals. It's generally more a speaker cable question in most studios, but not always. A cable checker can determine if a cable is correctly wired, but I'm not aware of anything that goes across speaker cables. And it's only a matter of reversing the polarity should being 180 out of phase occur.

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Re: How do you check phasing?
by Jay Stephen on Jan 6, 2003 at 3:07:50 pm

Thanks DSE. What kind of meter?

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Re: How do you check phasing?
by DSE on Jan 6, 2003 at 3:16:11 pm

With either a VOM or a phase meter.

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Re: How do you check phasing?
by Jay Stephen on Jan 6, 2003 at 3:23:42 pm

Sorry to be ignorant. I have a VOM and I can check the continuity of each connection wire using the ohms scale. Is that what you mean? I don't know what a "phase meter" is.

I am using an older McMartin MX5 mixer/pre with balanced output using screw terminals. The ground is easily identified but the "hot" and "cold" ("T" and "R" or "2" and "3") are not indentified. Any suggestions on how to determine which is which?

Thanks again.

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