The Audison APK 690 is a two-way component speaker system from the Prima series, designed to bring high-fidelity sound to vehicles with 6x9 inch speaker mounts. This set includes AP 690 woofers, AP 1 tweeters, and APCX TW 690 crossovers, working together to cover a frequency range from 40 Hz up to 20,000 Hz. With a nominal power of 100 W and a peak of 300 W, these speakers provide a robust audio experience while maintaining a sensitivity of 95 dB, which helps them perform efficiently even with limited amplifier power. To ensure durability in a car environment, the woofers feature a water-repellent treated paper cone and an abrasion-resistant coating on the basket. The design incorporates a triple wave surround and a pure copper voice coil with a 25 mm diameter, allowing for an Xmax of 4 mm to handle deeper bass notes. Complementing the low end, the 26 mm tweeters use an acoustic lens to compensate for frequency response between 10 kHz and 13 kHz, ensuring a balanced high-end output. Installation is simplified by the included crossovers, which feature fast-on connectors and an attenuation switch allowing you to choose between 0 dB and +3 dB to tune the treble to your preference. This system is an ideal choice for drivers who want to upgrade their factory audio to a more detailed, professional soundstage without needing extensive modifications to their door panels.