The Audison AP 4 is a 100 mm mid-range car speaker designed to deliver clear vocal reproduction in a compact form. It handles 40 W of continuous power and reaches a peak of 120 W, utilizing a 25 mm pure copper voice coil and a 4 Ohm impedance to integrate efficiently into your audio system. With a frequency response ranging from 80 Hz to 7.5 kHz and a sensitivity of 91 dB, these drivers provide a balanced mid-band performance without the need for a passive crossover, which helps maintain maximum signal efficiency. Its construction features a water-repellent pressed cellulose cone with an exponential V-profile, developed using FEM simulation and Klippel R&D Scan Vibrometer technology for precise movement. This is paired with a shallow TPU triple-wave surround and a compact basket protected by an abrasion-resistant coating. Measuring 103 mm in diameter with a mounting depth of 41 mm, the speaker is easy to install thanks to four mounting tabs, two of which are removable via perforation. This makes it a practical choice for enthusiasts looking to refine their vehicle's soundstage with a lightweight, 0.4 kg component that fits into tight spaces.