A two-way speaker has two speaker cones built into one speaker assembly: one cone to generate lower-frequency sounds and one cone to generate higher-frequency sounds. The low-range speaker cone is larger, the high-range cone is smaller. In car speakers, the low-range speaker cone usually occupies most of the area of the speaker, and is made from a light-weight, paper-like material, sometimes painted black, sometimes gray. A three way speaker has three speaker cones built into the assembly, an additional cone for mid-range frequency sounds.

Speaker frequency range or response is the range of frequencies that a speaker can play back sound in with a good amount of gain.

4 way speaker will have 4 voice coils - bass, mid range, high range and a tweeter. 2 way will have 2 coils.

any DUI conviction is a criminal ofence.

There is no such offence as a Mid Range DUI. Try Mid Range PCA

Co-Axial is the correct term and it is a speaker system that is comprised of two seperate speakers. Co-axial speakers (typically) have the mid-range driver and tweeter built into one unit. For clarity, the opposite of co-axials are "component seperates" speakers, they consist of seperate tweeter and mid-range drivers.