DD Audio Redline RL-PM6.5 (2pack) 905.38 NOK Available BUY Article Number: RL-PM6.5 Share Information Reviews Watts RMS 100-200W VCD 1.5 in. Impedance 4 Ohm Frequency Response 130Hz - 9KHz dBSPL 95 dB Overall Diameter 168 mm Mounting Diameter 144 mm Mounting Depth 68 mm.