Aco Pacific model 521 specifications: Difference between revisions
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[[File:|thumb| | [[File:ACO_Pacific_model_521.png|thumb|ACO Pacific Model 521]] | ||
==Description== | ==Description== | ||
The ACO Pacific Model 521 is a Sound Level Calibrator. | The ACO Pacific Model 521 is a Sound Level Calibrator. | ||
*Frequency: 1000 Hz +/- 1%. | *Frequency: 1000 Hz +/- 1%. | ||
*Total harmonic distortion (THD): less than 2% | *Total harmonic distortion (THD): less than 2% | ||
===accessories=== | |||
*Aco Pacific model 7012 Free Field microphone | |||
*Aco Pacific model 7013 Pressure Field microphone | |||
