Cadence QR Series Speakers QR422 100W 4? 2-Way Car Speakers Specifications RMS Power Handling: 40 watts per peaker PEAK Power Handling: 100 Watts per Speaker Frequency Response: 80Hz – 20 kHz SPL @ 1w/1m: 88dB System Impedance: 4-Ohm Mounting Depth: 4,8cm Size: 4? (10cm) Features Exteended Frequency tweeter Metalic Orange plated finish Press paper cone with Poly Mica layer Hign Temperature Kapton voice coil former Butyl Rubber surrounds Custom crossover design includes Custom Molded Grills