Performance (Continued)40ReferencePerformance OSPL90 frequency response curveand Full on acoustic gain responsecurve OSPL90 curve (Saturation output curve)and Full on gain response curve60708090100110120130100 1k 10kOutput sound pressure level [dB SPL]1020304050607080Full on acoustic gain [dB]Frequency [Hz]OSPL90 frequencyresponse curveFull on acoustic gainresponse curveAccording to IEC 60118-7:200560708090100110120130100 1k 10kOutput sound pressure level [dB SPL]1020304050607080Full on gain [dB]Frequency [Hz]OSPL90 curveFull on gainresponse curveAccording to ANSI S3.22-2003 (Includes April 2007 Erratum)