Speaker out of phase when once fine. - AVS Forum
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post #1 of 9 Old 10-22-2013, 10:06 AM - Thread Starter
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Hello All,

I was recalibrating my speakers last night and Audessey noted that one speaker was out of phase. Switching polarity on one end of the connection fixed the problem But I was curious as to why this would happen when before, calibrations were done, this was not an issue? What causes a speaker, that was in phase once, to go out of phase?
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post #2 of 9 Old 10-22-2013, 10:24 AM
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What else has/had changed with your setup since you last calibrated?
Why were you recalibrating?

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post #3 of 9 Old 10-22-2013, 12:42 PM - Thread Starter
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I moved my mains six inches further in on each side. Adjusted the rears a tad. Did not change the wires at all. Since the speaker positions changed, I re-calibrated. The left side speaker is what came up out of phase. Curious. BTW, I have a 7.1 setup.
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post #4 of 9 Old 10-22-2013, 09:42 PM
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It sound like you mean polarity. Some speakers interaction with the room correction software will do this from time to time. If you know the polarity is correct, just ignore it since it will not result in speaker damage. This is common on some Pioneer avr's. I don't use Audysee, so I don't know if it will complete the autocalibration under those conditions.

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post #5 of 9 Old 10-23-2013, 06:45 AM
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Quote:
Originally Posted by Gary Seven View Post

I moved my mains six inches further in on each side.
Moving the speaker will change the phase relationships at the LP, and can fool software into thinking that there's a polarity issue when there isn't. To check polarity turn off the surround processing, turn off the sub. Dial to an FM station, switch it to mono. Play one speaker only, then touch the leads to the second speaker. The level should go up, especially in the lows. If it goes down try it the other way. The louder option is correct polarity.

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post #6 of 9 Old 10-23-2013, 09:53 AM - Thread Starter
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Thanks guys, good info.

Audessey gives the option to ignore it. I will proceed accordingly.
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post #7 of 9 Old 10-23-2013, 12:16 PM
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Quote:
Originally Posted by Gary Seven View Post

I moved my mains six inches further in on each side. Adjusted the rears a tad. Did not change the wires at all. Since the speaker positions changed, I re-calibrated. The left side speaker is what came up out of phase. Curious. BTW, I have a 7.1 setup.

Out of curiosity, what speakers?

I have seen people post about this issue before. It MIGHT be that certain speakers, which MIGHT feature some common design element, MIGHT be more prone to exhibiting this anomaly than others.

You may want to post in or peruse the Audyssey "sticky" thread in the 'Receivers, Amps, and Processors' sub-forum for more info.

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post #8 of 9 Old 10-25-2013, 08:04 AM - Thread Starter
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Hi,

They are Paradigm ADP 590.

Thanks. I'll check out that thread.
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post #9 of 9 Old 10-25-2013, 10:01 AM
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Quote:
Originally Posted by Gary Seven View Post

They are Paradigm ADP 590.

Ah, interesting. Not so surprising, really, that those particular speakers might produce some anomalous phasing results.

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