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Re: Reference Level
Lampshade #377589 05/31/12 01:44 AM
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Hi Neon,
I get the calibration part but I still don't understand how the dial reads 0 when done manually.

Thanks.

Hey guys, we're actually talking about audio! Almost even Bob.


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Re: Reference Level
Lampshade #377591 05/31/12 02:25 AM
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If doing it manually then just make sure the dial reads 0 first, then you adjust the level of pink noise from each channel to 85db, 75db, 65db, or whatever db you want "0" to be.

The receiver should automatically set the dial to 0 whenever it outputs pink noise for channel level calibration purposes.


edited for spelling

Last edited by avjunkee; 05/31/12 02:26 AM.

M80s, VP180, QS8s, EP800 v3
Re: Reference Level
Lampshade #377593 05/31/12 02:38 AM
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Chris, when the calibration is done manually(definitely not my preference)the changes in level of the various speaker channels to get them equal is accomplished by changing the level trims which change the amount of voltage each channel gets at a given master volume control setting. That main setting, 0 or whatever, doesn't change at all during the calibration.


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Enjoy the music, not the equipment.


Re: Reference Level
Lampshade #377594 05/31/12 02:42 AM
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Ok. So simple. Just couldn't wrap my head around it. I think because my source of pink noise was from a Blu Ray disc not the receiver before I got my most recent amp.


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Re: Reference Level
nickbuol #377625 05/31/12 01:20 PM
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nickbuol, how did it go watching Super 8 ?

i hope you weren't hurt in the train wreck.
please tell us your impressions of the movie and how your system took it and delivered it.

Last edited by J. B.; 05/31/12 01:23 PM.
Re: Reference Level
Lampshade #377630 05/31/12 03:02 PM
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Alas, my daughter did other things and I couldn't talk my wife into watching it without her (my daughter). So I compromised and let my wife pick. We watched The Next Three Days. Not a bad movie at all, but not something with an amazing soundtrack. Maybe tomorrow night. I think that we all will be home.


Farewell - June 4, 2020
Re: Reference Level
Lampshade #377631 05/31/12 03:15 PM
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To put noise levels into perspective....

Noise levels in excess of 90 DB, for an excess of 8 hours, will result in permanent hearing loss. It is for that reason that hearing protection is required (OSHA) in industrial facilities where a noise survey has concluded that personnel could be exposed to noise levels in excess of 84 db. A peak, one time exposure to a noise level of 140 DB will also result in permanent hearing loss. Exposure to noise in excess of 100 DB for a duration of 2 hours will also result in permanent hearing loss. Double hearing protection is required when employees may be exposed to 140 db peak and / or 100 db over 15 minutes duration (OSHA).

Re: Reference Level
Lampshade #377633 05/31/12 04:32 PM
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my SPL meter can measure average SPL for any length of time, as long as the batteries don't run down, something like 60 hours if i remember right.
some day i will measure one of those "noisy" movies to see...
maybe Saving Private Ryan. Or, what about "The Mouse that Roared", that would be great, right?

for now, my guess is the majority of movies would have average levels of some 80-85 dBC SPL.

i think the measurements should be done with the "C" weighting; if anyone knows otherwise, pls tell me.

Last edited by J. B.; 05/31/12 04:36 PM.
Re: Reference Level
Lampshade #377658 06/01/12 04:11 AM
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I didn't like nor hate Super 8 but the train wreck scene is fun. I was using it to test my HT out. First really loud scene I have played since I got the basement done. Anyway my twin, two year old girls were upstairs running around looking out the windows trying to find the train. Priceless LOL!

Re: Reference Level
INANE #377679 06/01/12 04:04 PM
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Originally Posted By: INANE
I didn't like nor hate Super 8 but the train wreck scene is fun. I was using it to test my HT out. First really loud scene I have played since I got the basement done. Anyway my twin, two year old girls were upstairs running around looking out the windows trying to find the train. Priceless LOL!


if the whole neighborhood wasn't looking for the train wreck, then it means you need lots more subwoofers.

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