3 way component reccomendations

Hello to all. I am 18 years old, and i am highly dissatisfied with the "boom" cars that all of my friends have. I want to design a custom 3-way front component set.

My ride is a '94 single cab Chevy truck. I already have a Pioneer DEH-P4000UB head unit, Sony 4 way 4x6's, and Sony 2 way 6.5's in the doors. I have 2 Sony 12's for bass, but my midbass area is really lacking. I would like for this set to be bi-amp capable, if possible. I have heard great things about the Adire Extremis 6.8, and would love to use that as my midwoofer. I know that Adire is no longer manufacturing these, but isn't there a manufacturer that has a similar driver?

Along with driver reccomendations, I also need to know how to construct a custom crossover. Lastly, I will be purchasing a 4 channel amp to run this component set. Reccomendations on the amp are welcome. I had in mind an Alpine. Possibly the PDX if i have the coin.

Thanks in advance to all who reply!

Welcome to the wonderful world of DIY audio.  What you're talking about doing is probably not the best place to get started, as 3-way systems (actually 4-way if you add a subwoofer) are difficult to get set up correctly under the best circumstances.  I recommend you start by reading a few books like "The Loudspeaker Design Cookbook" or David Weem's "Designing, Building and Testing Your Own Speaker System."   It really is a fun hobby to get into, but it takes years to learn how to do it right.  I recommend you first build a design already created by someone else so you can learn some of the basics (and get an idea of the investment required - good quality DIY will cost more than you might expect it to) and then try designing a 2-way system first.

BTW, Adire no longer exists, but Dan Wigins' designs continue.  While the Extremis is long gone there are a couple of drivers that are similar, like this one.

Thank you for your advice! After reading some literature, i will attempt a 2-way set up. I still will probably use the Extremis modeled driver, as it is clean up high, and has good low end.

DYohn, thanks for your reply. Can you reccomend a tweet for this mid?

For general indoor use a really nice sounding tweet that can be crossed relatively low is the Peeless HDS.  Very low distortion and easy to work with.  For car audio, I always like the fabric domes from Seas or Vifa. 

I welcome the challenge! I have nothing else to do at the moment, or for awhile. I simply don't feel right NOT having something to work on, be it home or mobile audio. I may turn to the simple route if i run out of time or patience. I am an electrical NERD, and plan on majoring in Electrical Engineering in college, so I need to get my hands dirty, so to speak.

If I do go the easy route, I will probably not buy any Eclipse component sets, due to their midranges having metallic cones. According to  this thread by Steven Kephart, metallic cones cause ringing. At least most do, again according to Mr. Kephart. If I am wrong about the Eclipse sets, please correct me.

Thanks!

You remind me of myself a few years ago, although there might be a tad difference in age.  My advice is to put all effort into the installation itself FIRST.  There are so many bases to cover it can be overwhelming in the actual undertaking.  Let the forum know if you have questions regarding installation steps. 

First step is actual listening.  For instance, do you actually know what an Eclipse component set sounds like?  Make the rounds through the shops, ask questions and listen to the setups.  Those students who pound the pavement and go through these critical (but most often disregarded) steps impress me more than anyone else, regardless of their professional background or study of theory.

Once you've completed a thorough install, you will be better prepared to approach customization of sound.  Even though forbidden compared installation of engineered components to designing from scratch as "the simple route", (likely with a bit of tongue-in-cheek in doing so), I agree with him to set you off on that path as a start.  Until the basics are understood you can't have the appreciation of the principles you need to further advance.

Set your sights on learning the fundamentals of a well conceived and proper install.  And use engineered component systems to put it all together.  Grow from there.  And welcome to the forum.