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RE: Division of labor in PA system-More

Hi Tom,

Thanks for joining in.

Yes I understand equal loudness curves.

Is there any merit to my previous post, which theorizes that the RTA readings back in the audience (farfield) are going to be bass-heavy relative to the RTA readings nearfield, due primarily to the directivity of the mains but possibly also due to absorption coefficients in an occupied room?

I look at two-piece (two fullrange mains) PA systems, and don't see evidence that they are designed to have a low end cranked 10 - 20 dB louder than the mids and highs.

As another example, at the link below is a four-piece JBL system: Two mains, two subs. The mains max out at 133 dB each, and the subs max out at 127 dB each, so the subs combine in-phase for 133 dB. Is this system a complete joke, with the subs running out of gas 10 to 20 dB before the mains?

Duke
Me being a dealer makes you leery?? It gets worse... I'm a manufacturer too.


Edits: 02/07/11 02/07/11 02/07/11 02/07/11
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