5.25" Marine-Grade Speaker

Sensitivity: 91 dB. Frequency: 79hz-20kHz. Nominal impedance: 4 ohms. Polypropylene woofer: 5-1/4". Magnet: 2.9 oz.. Mounting hole dia.: 4-1/2"; mounting depth: 1-1/2". Tweeter type: Mylar® whizzer. Max power handling: 30W.