JL AUDIO M770-CCX-SG-TB Cockpit Coaxial System, Sport Grille

Cockpit Coaxial Speaker System - 7.70 in. woofers with 0.75 in. dome tweeters
Woofers:

Injection-molded mica-filled polypropylene cone bodies with synthetic rubber surrounds, specifically formulated for marine duty. Marine-grade, synthetic fiber spider with progressive roll design. Precisely engineered dust cap profile for smooth upper-end response. DMA-optimized long-excursion design for enhanced output, bass extension and power handling. UV-resistant polymer baskets. Optimized for cockpit-mount (infinite baffle)
 
Tweeters:

Neodymium motor system; 0.75-inch silk dome diaphragm with specially formulated treatment to withstand UV and salt-spray exposure; Ferrofluid-cooled and damped for improved response and power handling.Permanent grille-mounted design ensures optimal high-frequency performance with no loss of woofer radiating area.
 
Crossover networks:

Natural woofer rolloff with 2nd order high-pass filter on tweeter; Solid-state tweeter protection prevents tweeter failures due to abuse and resets automatically.
 
Continuous Power Handling: 70 Watts
Recommended Amp Power: 25 - 150 Watts
System Efficiency: 90.5 dB
System Nominal Impedance: 4 ohm
System Frequency Response: 45 Hz - 25 KHz ±3 dB