Usher 8945P

The HD measurements at distance 315 mm and voltage levels of 2.83 - 8 Volt were carried out with High Pass Filter "on" (2nd order Butterworth type, 50 Hz cutoff, HPF2-50)

The HD measurements at distance 315 mm and voltage levels of 11.2 - 16 Volt were carried out with High Pass Filter "on" (2nd order Butterworth type, 80 Hz cutoff, HPF2-80)

The voice coil current HD measurements were carried out with High Pass Filter "on" (2nd order Butterworth type, 50 Hz cutoff, HPF2-50)

Before taking the measurements the speaker had been very good boken-in