I am looking into upgrading my car audio system. after doing a lot of research between boston acoustics, alpine, kenwood and pioneer i have decided to go with the Alpine spr-60c(front) and Alpine spr-60 (rear) for the Amp i will get the Alpine PDX F4. I am aware of how the amp and speakers rms ratio have to match in order to take full advantage of the product. However, i want to get the Kenwood excelon DNX 6990HD which produces 22 rms rms per speaker. will this make a difference since i will have a powerful amp to compliment the speakers???

 

The RMS ratings of your headunit and amp don't add. From the headunit you send out a low watt "pre-amp" signal via RCA jacks which is then amplified to an X wattage signal by your amplifier.

I have those speakers up front (for now until new ones come in). Consider mounting the tweeter in the kick panel. When they were in the sail the highs were a little overwhelming. I was putting 120 watts to each side and one of the tweeters blew, I've read its because of an issue with the crossover.

You're going to get a lot of different advice on speakers on this forum, but here's mine. Amplifying the rear speakers is a bad idea. They're too close to your head and are overpowering. Even upgrading them is very unnecessary. I would recommend leaving them stock and running off the new head-unit's power, fading the total signal to the front by 75%.

TLDR: IMO Ditch the rear upgrades and run stockers off new head unit. Front consider putting tweeters in kick panels. Amp is good, use two channels for front speakers, bridge the other two to a small sub later or something (or use to run active later!)

Don't forget about amp wiring kit and dash kit/harness for headunit. New speaker rings, etc.

 

rewired the whole car and have polk comps in front and polk coaxials in the rear powered by a 300/4 channel JL amp. Also have two JL w3 in a zenclosure box being powered off a 500/1 JL mono block amp. Alpine headunit (temp replacement after pioneer got stolen). In my years of upgrading car stereo equipment, ive noticed that alpine does not live up to its hype. I would go with a pioneer headunit. And dont forget to put some dynamat or equivalent down on any exposed metal you can find behind the door panels and underneath the rear molding/speaker cover. My car sounds amazing with this set up. I have everything wired to the stock subwoofer location. 0 gauge power and ground. Made a cheap amp rack for the two amps and everything is hidden, when my car was broken into they never found the two amps. No overheating issues ever. Good luck and have fun. If you need any tips on wiring the doors let me know, its kind of involved.

 

BigJon,

You're definitely going to receive a spectrum of advice on audio gear and how to set up your system. It really boils down to personal choice and budget.
Both responses here have listed some great comments and valid points for your consideration. If you're really looking to improve your car's audio setup, think of it as your personal sound-stage and set it up that way. IE, quality FRONT speakers and only marginal rears because those are generally used for rear fill (when you're at a concert, the artist and music is always playing in front of you, correct? Or, do you turn around and watch it with the back of your head) I think you get my point. Add a quality sub to really fill out the bottom end, and run a solid amp to drive the front/subs while your HU runs the rear. My personal setup are Polk separates up front, Polk coaxial in the rear, Polk 10" sub, driven by an Alpine 5 channel amp, all controlled by a Pioneer Navi HU which has 3 sets of pre-outs to control every aspect of my system. Good luck, have fun, and if you're doing the work, be prepared to tear apart a lot of body panels.

 

I don't know if you're set on having a screen in the car, but if not maybe consider a HU with time alignment capabilities. Would make a noticeable difference, and make your rear speakers even more unnecessary. Clarion has some good offerings.