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Author Topic: crazy ears  (Read 7185 times)

Chuck Simon

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Re: crazy ears
« Reply #10 on: June 02, 2011, 02:33:43 pm »

Quote
After about 50' of speaker cable I can hear differences in level between lengths of cable (ie, 50' vs 80'+).
You can hear the difference in Db level due to the voltage drop of a signal travelling across 30' of wire????    With 12 guage wire into an 8 ohm load, 30 feet represents a voltage loss of about 1.2%.  You've got some good ears!
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Patrick Tracy

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Re: crazy ears
« Reply #11 on: June 02, 2011, 03:13:25 pm »

Stupid question (and correct me if this was already mentioned) but sometimes the simple solutions are the least obvious - is it possible one side of the rig is out of phase? This would cause an obvious difference in the apparent left-right balance...

How so?

Steve Hurt

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Re: crazy ears
« Reply #12 on: June 02, 2011, 03:16:31 pm »

How so?

Top cabinet and the bottom cabinet on the quiet side out of phase with each other. 
Probably the low/mid driver being the one that is out from the sub and horn
« Last Edit: June 02, 2011, 03:28:58 pm by Steve Hurt »
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Rob Gardner

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Re: crazy ears
« Reply #13 on: June 02, 2011, 05:22:39 pm »

Top cabinet and the bottom cabinet on the quiet side out of phase with each other. 
Probably the low/mid driver being the one that is out from the sub and horn

Also (and correct me if I'm wrong on this one), if the drive line is out of phase on one side it would cause the same effect...
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Rob Gardner
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The Lexington Avenue Brewery
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Steve Hurt

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Re: crazy ears
« Reply #14 on: June 02, 2011, 05:25:14 pm »

Also (and correct me if I'm wrong on this one), if the drive line is out of phase on one side it would cause the same effect...

It would cause cancellation, but it wouldn't cause one side to always be quieter.
When there was cancellation, both sides would be quieter

(I'm sure I'll be corrected or at least refined by those with more knowledge)
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Tim McCulloch

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Re: crazy ears
« Reply #15 on: June 02, 2011, 05:27:31 pm »

Top cabinet and the bottom cabinet on the quiet side out of phase with each other. 
Probably the low/mid driver being the one that is out from the sub and horn

Also (and correct me if I'm wrong on this one), if the drive line is out of phase on one side it would cause the same effect...

No, it wouldn't.  It would leave a 'hole' in the spot between the stacks, but if there was no other difference the left & right should sound the same.

And it can't be out of PHASE.  Phase is frequency/distance (time domain) dependent.  POLARITY is the word you were looking for, and the answer is still 'no.'
« Last Edit: June 02, 2011, 10:03:59 pm by Tim McCulloch »
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David Parker

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Re: crazy ears
« Reply #16 on: June 02, 2011, 08:17:05 pm »

All good responses, but again, everything in my setup is random with regards to right or left. This has also spanned 3 very different setups. I pay no attention to right and left stereo, since I don't pan anything other than the mp3 player and stereo reverb. I've had my hearing tested, and one ear is worse than the other, but I think it was my right ear that was better, and the left side of the rig always sounds louder. As far as being on center, I have to walk halfway to the other side before it sounds louder on the right. As far as polarity of drivers, again, that is not  an option, because of the random setup. Sometimes the amp rack is on one side, sometimes on the other, so the longer cables switch sides randomly also. Someone said that the difference in hearing wont show up on headphones so much, that might be the answer.
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Patrick Tracy

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Re: crazy ears
« Reply #17 on: June 03, 2011, 01:04:44 am »

Top cabinet and the bottom cabinet on the quiet side out of phase with each other. 
Probably the low/mid driver being the one that is out from the sub and horn

I was responding to "one side of the rig is out of phase", which is true of all systems anywhere except at points equidistant from both sides. I suppose one cabinet in a stack could have polarity inverted, which would lower the level in the crossover region(s) if the cabinets are sufficiently in phase.

Mike Reilly

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Re: crazy ears
« Reply #18 on: June 03, 2011, 09:36:28 am »

I've had my hearing tested, and one ear is worse than the other, but I think it was my right ear that was better, and the left side of the rig always sounds louder.

IANAD, but this might be it, in a "psychoacoustic" kind of way.

As in, if your right ear is "better" (which usually means you can hear more high end on that side), then your left ear is hearing less high end and therefore proportionately more mids & lows, which your brain then interprets as "louder."

Other than that, the other suggestions about testing your rig & swapping cables seem reasonable as a reality check, as it's not utterly impossible that your "random" setup has by sheer chance often put the same speakers/cables/etc on the same side night after night.  Plus of course if there's an issue with your desk or snake or FOH gear/cables then one side could be louder regardless of speakers & amps.
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David Parker

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Re: crazy ears
« Reply #19 on: June 03, 2011, 09:56:01 am »


Other than that, the other suggestions about testing your rig & swapping cables seem reasonable as a reality check, as it's not utterly impossible that your "random" setup has by sheer chance often put the same speakers/cables/etc on the same side night after night.  Plus of course if there's an issue with your desk or snake or FOH gear/cables then one side could be louder regardless of speakers & amps.

this goes back several very different systems. Everything has been changed. Several times. Different mixers, different eq's, different crossovers, different speakers, different bands, different venues, and within all those differences, never set up the same way twice, and it's always the same, the left side appears louder. Unless of course my mix position is way on the right side, which sometimes it is.
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