Car Stereos: Replacing speakers, external crossover, boston acoustics

Question
I have a 1997 Grand Prix with the stock sound system. This includes 2 6x9s, two 5 1/4s in the doors, and two tweeters up front. I want to completely replace the speakers and have no idea where to start. What kind of brands should I take a look at and how might I go about tackling this?

Answer
Hi Mark,

Sorry for the delay in answering your question.

I try to avoid giving brand name recommendations, as much as possible; mainly because this is pretty subjective, and because there are a number of very good brands out there that I haven't had the opportunity to test.  In selecting speakers, I don't think there's any better way to select them than just to go out and listen to some.  Generally, I recommend listening for the most "natural"-sounding speaker: not the loudest, brightest or deepest.  

I'd pick the 5-1/4" speakers first, then select a 6x9" speaker to match the front speakers--ie, if you decide you like Boston Acoustics 5-1/4" speakers, then pick a Boston Acoustics rear speaker in the same line.  The biggest factor in the sound quality will be the front speakers; the rear speakers just provide additional bass, and a "fill" effect.

When you're looking at front speakers, you'll have a choice between a "coaxial" design, or a "component" system.   Most of the speakers you see in stores are coaxial; they combine the tweeter and the woofer in the same space.  A component speaker uses a separate woofer and tweeter, with an external crossover to send the right frequencies to the right driver.  I'd suggest looking at component systems if your budget allows it; because you have a factory tweeter, it will be fairly easy to install a component package provided you don't choose one with a tweeter larger than 1".  The installation will still be more difficult than a coaxial speaker, however.  If you choose a coaxial speaker, it's best to just disconnect the factory tweeter.

You really don't have to pay attention to issues like 2-way vs. 3-way speakers, or the published specifications.  Just trust your ears.  If you're planning to use the factory head unit, or an after-market head unit, stick with 4-ohm speakers and avoid 2-ohm designs; these are less common, but they're out there.  If you plan to add an amplifier to run the speakers, either 4-ohm or 2-ohm speakers will work fine.  

Hope this helps!

Brian