Our Products         Line Array       Active Speaker Cabinet       Studio Monitor   CLASSIC series MT series PM series ST series   Speaker Cabinet       EQ & Amplifier       Portable Speaker       Guitar/Bass Amplifier       Mixer       Popstar       VA serise       Ultra Portable Speaker     Monitor >>> PM             PM-4a   PM-5a   PM-6a       PM Series Studio Monitor Specifications PM PM-4a PM-5a PM-6a Low Frequency Drive 4" magnetically shield mineral-filled polypropylene cone with high temperature voice coil and damped rubber surround 5" magnetically shield mineral-filled polypropylene cone with high temperature voice coil and damped rubber surround 6" magnetically shield mineral-filled polypropylene cone with high temperature voice coil and damped rubber surround High Frequency Drive 1" magnetically shield ferrofluid-cooled natural soft dome 1" magnetically shield ferrofluid-cooled natural soft dome 1" magnetically shield ferrofluid-cooled natural soft dome Frequency Response 65Hz-20KHz 60Hz-20KHz 55Hz-20KHz Crossover 2.6K 2.6K 2.6K SPL 86dB(1W&1m) 86dB(1W&1m) 90dB(1W&1m) Low Frequency Amplify 40W 60W 80W High Frequency Amplify 20W 30W 40W Dimensions 160×185×225mm 185×225×280mm 210×255×320mm Weight 4Kg/PCS 5.5Kg/PCS 8Kg/PCS