Cadence QR Series Speakers QR965 320W 6.5″ Coaxial Car Speakers Specifications RMS Power Handling: 65 watts per speaker PEAK Power Handling: 160 Watts per Speaker Frequency Response: 60Hz – 20 kHz SPL @ 1w/1m: 90dB System Impedance: 4-Ohm Mounting Depth: 6,6cm Size: 6.5″ (16.5cm)