APX 5APX 5 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 5" cones surround features the exclusive shallow Triple Wave profile, for maximum excursion linearity. Concentric Coaxial Tweeter: tweeter is mounted within the woofer with one single point of emission