Focal Access 100CA1 SG 2-way 4" car speakers 2-way 4" speakers (pair) | Humidity-resistant, woven glass-fiber woofer | Butyl rubber surround Pivoting aluminum inverted-dome tweeter | Non-resonant ABS/fiberglass basket | 2-40 watts RMS power range (80 watts peak) 4-ohm impedance | Frequency response: 90-20,000 Hz Sensitivity: 89 dB | Depth: 2-1/16"