The JBL Stage2 604C is a 6-1/2 inch two-way component speaker system for vehicle audio. It is rated at 45W RMS and 270W peak, has a 4 ohm nominal impedance, 91 dB sensitivity and a frequency response of 55 Hz to 20 kHz.

The kit provides separate woofers, tweeters and external crossovers for flexible mounting and frequency separation. It is intended for installation in vehicles with 6-1/2 inch speaker openings and connects to standard speaker wiring; professional installation may be required for optimal tweeter placement and crossover mounting.