10°20°30°40°50°60° 90° 120° 150° 180° -150° -120° -90° -60°-50°-40°-30°-20°-10°−45−40−35−30−25−20−15−10−50510°20°30°40°50°60° 90° 120° 150° 180° -150° -120° -90° -60°-50°-40°-30°-20°-10°−45−40−35−30−25−20−15−10−50510°20°30°40°50°60° 90° 120° 150° 180° -150° -120° -90° -60°-50°-40°-30°-20°-10°−45−40−35−30−25−20−15−10−50510°20°30°40°50°60° 90° 120° 150° 180° -150° -120° -90° -60°-50°-40°-30°-20°-10°−45−40−35−30−25−20−15−10−505
SPL Vertical Radar100 Hz125 Hz160 Hz200 Hz250 Hz315 Hz400 Hz500 Hz1600 Hz2000 Hz2500 Hz3150 Hz4000 Hz5000 Hz6300 Hz8000 HzSPL Vertical Radar for PMC Twenty 21 measured by Audio Science Review (eq gain -3.5dB)