Mitsubishi Electronics PKH18FL service manual Noise Criterion Curves, PKH30FL, PKH36FL, PKH24FL

6. NOISE CRITERION CURVES							Ambient temperature 80˚F			Unit
							Test conditions are based on JIS Z8731			3.3ft
PKH18FL						NOTCH SPL(dB)			LINE
PKH24FL						Hi		48
	90					Lo		41	3.3ft
BAR
0.0002MICRO	70
	80
dB re									NC-70
	60
LEVEL,
									NC-60
PRESSURE
	40
	50
									NC-50
SOUND	30								NC-40
BAND									NC-30
OCTAVE	20	APPROXIMATE
	10	NOISE
		THRESHOLD OF
		HEARING FOR							NC-20
		CONTINUOUS
		63	125	250	500	1000	2000	4000	8000
			BAND CENTER FREQUENCIES, Hz

PKH30FL	NOTCH SPL(dB) LINE
PKH36FL	Hi	49
	Lo	44

BAR	90
0.0002 MICRO	80
	70								NC-70
dB re
LEVEL,	60
									NC-60
PRESSURE	50
									NC-50
	40
SOUND									NC-40
	30
BAND									NC-30
	20	APPROXIMATE
OCTAVE
		THRESHOLD OF
		HEARING FOR							NC-20
		CONTINUOUS
	10	NOISE
		63	125	250	500	1000	2000	4000	8000

BAND CENTER FREQUENCIES, Hz

Wall

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