In order to make a choice of adequate loudspeakers for their specific demands, audio technicians, project engineers or architects need data sheets, which conveniently describe all the relevant information about the product. Acoustic and electric characteristics in particular are key criteria. State-of-the-art measurements performed on a loudspeaker in adequate measuring conditions provide the basis for these data sheets.

The measurements are carried out in a semi-anechoic chamber in quasi free field conditions with the microphone positioned on the solid floor in the far field (depending on the size of the loudspeaker at a distance of 2 to 8m)

Passive Loudspeakers

Active Loudspeakers

Line Arrays



Anselm Goertz