What is the maximum sound pressure level at 1 kHz?

The highest sound level that the microphone can still cleanly process to the largest extent possible.

Acoustic level as of which the microphone produces a defined total harmonic distortion, generally 1% at 1 kHz. This level defines the upper limit of the linear operating range of a microphone. We do not specify this value for most dynamic microphones, as it is so high that it can no longer be reliably measured.

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