car stereo automobile sound system

I must disagree with Rx8man. Pioneer and Alpine sound very mid-low-fi to me. For truly good head units there are three brands I would consider.

The first is Eclipse. Look for a head unit with the 24-bit delta-sigma DAC. I have the 5444 (last year's model) and the sound is incredible. In a direct listening test, it sounded far better than the top of the line Alpine. Even the lower line Eclipse units have better sound than Alpine, Pioneer, Sony, Panasonic, Blaupunkt, etc. - you get the idea. The Eclipse website is http://www.eclipse-web.com

I believe Nakamichi makes a good line of head units as well. Since they do not have a dealer in my area, I have not been able to listen to them. Their website is http://www.nakamichi.com/flash.html
This is a flash site so make sure your computer is capable. They play some decent music while you browse on this site suggesting that they are as passionate about sound as you are. (But of course this could just be clever marketing!)

For the ultimate head unit-CD changer-amp-speaker setup, I would like to see someone try McIntosh. They definitely have the McIntosh look which may or may not complement your interior, but if the sound is as good as their home products it should be worth the premium price. Website: http://www.mcintoshlabs.com

I'll second the vote for MB Quart speakers. They are probably the best of the widely available speakers. Go for the top of the line.

Another speaker to look at is Dynaudio. They are not cheap and the speakers have VERY large magnets as do their home speakers so they eat current for breakfast - make sure you pair them with a competant amp. I have heard them and the sound is very good.

A third brand to look at is Focal (same company that makes Focal_JM Labs home speakers). I have heard these also and the sound is good. I prefered the sound of the Dynaudio's, but they were not the top of the line Focals so it wasn't really a fair comparason. Let your ears decide if you can arrange to listen to both.

Depending on your car, your choice of installer/wiring/speaker placement may have a big impact on your ultimate sound. You can't play around with speaker placement, cables etc. as you can with home speakers so try to get an installer with a good reputation and one you can trust.

I gave up on car audio so many years ago. when comparing the top car audio systems of the world and competing with competition cars. Not for spl but for sound quality and installation. I have never heard a car recreate a soundstage of a modest home system(Thiel 2.3’s). After winning a few car stereo competitions in wattage class, and creating a center channel in the air vents and door panels and dynamat throughout. The are a lot of musical sound systems and even a few headunits containing dsp creating a center channel; The older units by pioneer and Rockford fosgate. The jl audio in large sealed enclosures are great for subs. Speakers by ADS and MB Quart and Boston Acoustic Pro series are very musical and accurate. Amps from Alpine Pro Series for the front section and a RF punch series or phoenix gold amp for the subs. If you put a lot of wattage to the car make sure you use a large capacitor from the engine. If you don’t get a head unit with dsp. Another very musical head unit is an older nakamichi cd player.

Enjoy
dave

I recommend using a separate DAC. I have a SONY CD changer with digital output. The DAC is a Theta Pro Basic IIIA preceeded by 10 jitter filters. Speakers are Dynaudio which are tri-amped.

I tried for many years to approach the sound achievable in the best of home audio.I could get a few key metrics,high volume,dynamics,low frequency.
However image palpability,dimensionality,that reach out and hold it quality eludes.
Closest I could get was Dynaudio mid/tweeter combo in fabricated kick panels with no center channel.Just straight stereo no DSP tricks and you had to lean in to the middle for best focus.The interior glass boundaries always color the sonics far too much.
Even 5.1 sounds artificial...so much processing in close quarters just shy of natural.In the end you'll settle for dynamics,low end,and volume...but motor started going down the highway it's all downhill.

Holly cow, I hope I am not around you guys when you are "listening" to the nuances of audiophile equipment while driving! There is a time to listen and that is not while driving, therefore no need or possibility of having audiophile quality system in a car.
Of course you might be using the car system as a portable "boom box" to disturb fellow picnickers!
If you must drive while listening to an audiophile system, install a driver simulator in your listening room.
Salut, Bob P.