JBL Stage3 637F 6.5" 3-Way Coaxial Speakers 501-1000 so you can use either

so you can use either a factory head unit or add an external amplifier for improved dynamics

Power @ 4 Ohm Bridged: 450w x 2 @ 14

Motor Weight: 78 lbs

Real-world: confirms fit in standard 6x9 openings and mounting depth requirements

JBL Stage3 637F 6.5" 3-Way Coaxial Speakers 501-1000 so you can use eitherThe JBL Stage3 637F is a 6. 5" 3 way coaxial car speaker engineered for enthusiasts who demand JBLs pro sound heritage, high efficiency, and a broad frequency range from a single, compact assembly. Power Handling: 45W RMS continuous, 135W peak. Real world: supports sustained playback without clipping and can handle brief high power transients when driven by a suitable amplifier. Sensitivity: 92 dB @ 2. 83V 1m. Real world: higher efficiency means more