I didn't post that, pro rabbit did. And yes, you are completely misinterpreting the graph and your conclusions are not correct. It is an impedance and phase graph, not a frequency response graph. Unless you have a TON of experience it's hard to decipher the information you are looking for from it. The lower graph is the impedance curve. The large peak occurs at the resonant frequency (Fs) of the driver. The width, slope and height of that peak is determined by the driver's various Q (damping) factors. Figuring out the Fs is pretty easy, determining what the graph is telling you about the various Q factors of the driver takes a trained eye and some calculations. The Fs and Qts (total damping of the driver) determine the low frequency characteristics of the driver. Combine those with the driver's Vas (not able to be determined from the graph) and you can then model the low frequency characteristics of the driver in various sized sealed and ported enclosures. The rising impedance on the right side of the impedance graph is determined by the inductance (Le) of the driver. The lower the frequency the impedance begins to rise at and/or the steeper the slope of the rise, the higher the inductance is (comparatively). The inductance and subsequent increasing impedance inhibits the high frequency response of the driver. It can't respond fast enough to reproduce those frequencies. It really isn't just the inductance that creates this effect, it's a combination of the driver's inductance in relation to the driver's DC resistance (Re). Two drivers with the same Le but different Re's will behave differently. The top line on the graph is the impedance phase angle. The large impedance variations affects the phase angle of the driver, which is basically how in- or out of phase the voltage and current are. The deviation in the phase tells you that the voltage and current will not be in phase at those frequencies. Anyways....challenging yourself right now would be learning how to maximize the installation and tuning of a 2 way system. If you can't maximize a 2 way installation, then a 3 way will be a fail. Certainly you could simply hook everything up and it would "work", about as well as your current front stage "works"...which is to say it will play music but perform now where near how it should sound or anywhere near it's full potential. First, home and car audio are completely different environments. Second, those home audio speakers have (well, should have had) a good bit of engineering behind their design and are not just cobbled together as you are proposing. Using something just because you have it isn't how you go about designing a quality system, especially when the product was probably a poor purchase decision to start with. And you still haven't answered my questions.