Bryant 558J manual Sound Performance Table, Outdoor Sound dB, 125 250 500 1000 2000 4000 8000

558J

Table 4 – SOUND PERFORMANCE TABLE

UNIT				OUTDOOR SOUND (dB)
	A---Weighted	63	125	250	500	1000	2000	4000	8000
04	80	90.6	80.9	80.2	76.0	74.6	71.3	68.5	63.9
05	81	90.9	84.6	79.5	77.9	76.5	71.1	66.9	62.5
06	78	84.0	82.2	76.3	74.8	72.5	68.8	65.6	61.8
07	78	88.8	81.8	76.9	74.4	73.3	69.8	66.3	62.7

LEGEND	NOTES:
dB --- Decibel	1.	Outdoor sound data is measure in accordance with ARI
		standard 270---95.
	2.	Measurements are expressed in terms of sound power.
		Do not compare these values to sound pressure values
		because sound pressure accounts for specific environ-
		mental factors which do not match individual applica-
		tions. Sound power values are independent of the envir-
		onment and therefore more accurate.
	3.	A ---weighted sound ratings filter out very high and very
		low frequencies, to better approximate the response of
		“average” human ear. Bryant’s A ---weighted measure-
		ments are taken in accordance with 270---95.

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