There's no definitive answer to this question, because there are many factors at play. Do you want your speakers for bass, mids or highs? What type of music do you listen to? Which type of speakers do you want? Getting the best car speakers depends on your taste. Take a look at the reviews above to help guide you.
There's no particular brand that stands out in every single feature and there are many There's no particular brand that stands out in every single feature and there are many brands producing some high quality car audio speakers. To name some, but not in any order: JBL, Focal, Polk, Pioneer, JL Audio, Kenwood, Rockford Fosgate, Pyle and Kicker.
Coaxial speakers are speaker systems where all the components are combined in one structure. Usually, the framework will consist of a woofer and a tweeter, and they usually have built in crossovers. Component speakers are systems with separate components, which means you can install different components at various locations in your car.
The short answer is yes. Upgrading your factory speakers with some high-performance car speakers will dramatically improve the soundscape in your car. Factory speakers have cheap quality materials and cannot perform as well as even the cheapest aftermarket speakers, so if you really want crystal clear music at high volume, you need to upgrade your loudspeakers.
Some aftermarket speakers will make a difference, but of course an amplifier will push your new speakers to higher and clearer highs. If you like your music loud and without distortion, then yes, you should get a good quality car amp, because it will make a major difference..
It's better to overpower a speaker than to underpower it, because the distortion caused when you push a low-powered amp or head unit to its limit will more than likely harm your speakers.
It all depends on the quality of speaker you want. A speaker upgrade can cost anywhere from under $50 up to several thousand dollars depending on the type of speaker. The best car speakers aren't necessarily the most expensive, but of course you get better quality materials if you're willing to spend.
It depends on your set up really, but generally the best car speaker wires are 16 to 12 AWG, depending on the speakers’ power. Also, the best speaker wires should be made of oxygen-free copper (OFC), as these will give you the best quality sound. Check out this Speaker Wire Gauge Guide for more information...
To connect speaker wires to receiver is quite straightforward. Ensure both the receiver and speaker input/output wires are connected with the same color. For example the positive speaker terminal on the receiver should connect with the positive terminal on your speakers. Do the same with the negative terminals and wire.
The short answer is no. Car manufacturers build their cars in unique ways, and the location of speakers is different in pretty much every different car. You can definitely get speakers to fit your car, but it's always good to know about different car speaker sizes before you get some.