Description AP 6.5 feature a 32 mm pure copper voice coil, for high power handling and outstanding low frequency control. All the woofer don’t employ any filter, to maximize efficiency: the dome profile has been optimised with Klippel R&D Scan Vibrometer to obtain a calibrated mechanical low-pass cut-off frequency. The surround features the exclusive shallow “Triple Wave” profile, for maximum excursion linearity. Sold as a pair. TECHNICAL SPECS Size 165 mm Power Handling – Peak 210 W Power Handling – Continuous 70 W Impedance 4 Ohm Frequency Response 60 ÷ 5k Hz Voice Coil Ø 32 mm Woofer Qes 0,8 Xmax 2.5 mm ELECTRIC-ACOUSTIC SPECS Re 3.1 Ohm Fs 80 Hz Vas 7.6 l Mms 12 g Cms 0.31 mm/N BL 4.7 T•m Qms 4.7 Qts 0.7 Le Standard 0.23 mH Spl 93.5 dB