同軸式 | 120W 峰值功率 | 100 mm | 4Ω
 
APX 4 採用同心式同軸高音單元，透過單一聲音發射點可實現一致的相位響應，從而重建出與獨立低音單元 + 高音單元系統相媲美的聲音場景。其 4³ 槽型圓錐襯墊具有獨特的淺型三重波形輪廓，實現最大行程的線性運動。
 
Coaxial | 120 W Peak Power | 100 mm | 4 ohm
 
APX 4 features a concentric coaxial tweeter: with one single point of sound emission it is possible to obtain a consistent in-phase response, with consequent reconstruction of the acoustic scene comparable to a system of separate woofer + tweeter.The 4³ cones surround features the exclusive shallow Triple Wave profile, for maximum excursion linearity.