DD Audio DC6x9 172.93 EUR Available BUY Article Number: DDDC6X9-S4 Share Information Reviews Woofer 6x9″ Tweeter 25mm Recommended amplifier50-150 W Impedance 4 ohm Frequency Response 40 - 25 000 Hz Sensitivity 90 Mounting Depth 2.39″ Weight 5 kg.