The measurement lab at Excelsior Audio utilizes an eighth-space (π/2 steradians) environment for performing loudspeaker measurements. Fiberglass wedges
mounted to the trusses above the measurement area control potentially detrimental reflections from the ceiling. This enables us to use an impulse response
window about 40 ms long for our measurements resulting in anechoic data with a frequency resolution of about 35 Hz.
Our measurement microphone is located over 6 meters away from the loudspeaker during the measurements. This allows us to measure in the far-field of
reasonably large loudspeakers up to very high frequencies.