Hey everyone. I'm going to setup a, hopefully, good SQ system in my car. I'd rather not get a new HU since they're pricey. I was looking at a line driver to up the volts(instead of the stock 2v preouts that come with it) to eliminate the static. Now, I'm going to setup (probably - see my other post on setups) Perfect 6.1 in kicks with a Perfect Aluminum Tweet mounted around head level to increase stage height and lower the rainbow effect caused by kick panels. I'll be using a JBL P80.4 to power these, and possibly some speakers for the rear stage as well. Now, since the Perfects are component speakers, they have their own crossovers. Will I need an external crossover, or will the stock ones be sufficient? What about an Equalizer? These are parts I've not much knowledge in. What do all you pure SQ guys do to run your system with the correct frequencies per driver? Thanks for all the help/advice.