Questions.... I just read all 27 pages and didn't see any examples comparable to what I did. I need to know if I should do this mod even with the changes I am making.

I am installing an Alpine CDE-HD137BT and will be using the HU speaker out cables to the stock amp to to wire up the fronts to the door speakers and the rears to the speakers. (My original HD skipped CDs over bumps.) I have also replaced my door speakers with a set of 609CS Infinity speakers - I had a blown passenger speaker. The new 609CS 6 inch are heavier and larger than the stock and the tweeters are also larger and much heavier. My new Apline has an equilizer built in.

So my doors (6 inch and tweeters with the new Inifinity Crossover connected) will be controller by the front speaker HU settings and the subs will be controlled by the rear speaker HU settings. I have wired everything up as shown in other threads on this site - separating the inputs into the amp from two channels to four channels. Getting ready to test everything on NYears day.

Should I still install this mod for my front speakers? I realize that my subs (rear) will only produce low bass frequencies based on the amp design and the fact that I am using hte original subs still.

Thanks