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The quantity, L W A,c (formerly called L W Ad) may be computed from the sum of L W A,m and K v.

K v is the statistical adder for computing upper-limit of A-weighted sound power level.

L p A,m is the mean A-weighted sound pressure level measured at operator position (rounded to the nearest 1 dB).

L W A,m is the mean A-weighted sound power level, rounded to the nearest 0.1 B.

Acoustic Performanceĭeclared noise emission values in accordance with ECMA-109 Read the 21.5-inch iMac Environmental Report for detailed information on this product’s environmental performance.

100% of virgin wood fiber comes from responsibly managed forests.

Mercury-, BFR-, PVC-, and beryllium-free.

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