5 Car Speaker Upgrades With Superb Audio Quality

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Ever thought that car speakers sound better than almost any other speakers? Well, it's not always the speaker. Car interiors are controlled environments, where speakers have predictable performance and naturally good sound insulation due to fabric ceilings, foam seating, and smooth angles for sound waves to bounce off. Stock car speakers can be an afterthought, which is why there's a big car audio market. People also think of upgrading speakers over the stock head unit, which is a cheap way to upgrade audio quality in older cars.

Unless buyers are getting a sports model that specifically states it has a branded sound system, people are usually stuck with basic door speakers. No amp, headunit, or subwoofer is usually included, but there are plenty of aftermarket options — from a budget upgrade to serious sonic power. An expensive setup doesn't always mean a good one, and looking at what's included in bundles and real-world performance can often result in drivers saving a small fortune on the specs they need instead of financially flexing.

We've picked out five different car speaker options with superb audio quality relative to their price point. There's a car speaker upgrade for every kind of listener that offers a great upgrade over stock cones for every kind of budget, from a $399.95 2-speaker upgrade with glass-fiber woofer cones and 300-watt peak power to premium and tuned $1,370.99 speaker kits that sound like nothing else on the market. Let's get into it:

The Focal Mobile ES 165 KX2E is a premium beast of a car sound system. It's a best seller because it offers the best dollar-to-performance value for a 2-way 6.5-inch component kit. It's not cheap, currently $1,370.99 at Amazon, but there are plenty of good reasons why it's worth every penny. For starters, it features a signature K2 sandwich cone made up of a foam core between aramid fiber and fiberglass.

Its FRAK aluminum "M-profile" inverted dome tweeter puts out detailed yet smooth highs, meaning this financial investment doesn't sound like it's coming through a Pringles tin. They're built in France and are thoughtfully designed instead of being generic mass-produced cones, which is illustrated in its rigid aluminum basket and TMD surround to reduce distortion. There's nothing wrong with metal and rock music, but added distortion from generic low-quality speakers that can't handle some frequencies and higher volumes isn't cool. 

They're incredibly efficient by just drawing 2 ohms from its amp, meaning it can put out louder volumes with less power draw vs. the industry standard 4 ohms. Frequency response is also solid at 55Hz low-end to a 32kHz high-end, with 20kHz being the limit of what humans can actually hear. Overall, this is a great choice.

Alpine R2-S65C is a solid mid-range choice with Carbon-fiber-reinforced woofers for clear sound while holding up impressive midbass for the price. Its frequency response is solid, from a 65Hz low-end to a 40kHz high end, handling high-resolution audio with no issues. In fact, it's Hi-Res audio certified and delivered by its magnesium hard-dome tweeters and fast transient response. Alpine is a reliable name with plenty of options across all budgets, but this one hits that sweet spot for a mid-range kit with 100W RMS power handling.

There are some good specifications and features with the R2-S65C to warrant its $399.99 price tag. It has a ferrite magnet structure, specifically ceramic magnets, with reliable thermal stability perfect for controlling woofer cones. HAMR surround (high-amplitude multi-roll), which is a rubber surround for the woofer cone to efficiently move air while staying cool. It produces enhanced low-frequency control, resulting in tight and clean bass. 

Two premium-grade in-line crossover networks that split audio signals clearly before reaching the speaker, resulting in damage prevention, less distortion, and improved overall sound clarity. For drivers who want a decent upgrade with some nice features without going over the $500 mark, Alpine R2-S65C is solid value for replacing two stock 6.5-inch car speakers.

A solid budget choice for two 6.5-inch component speakers is the JL Audio C2-650 sitting at $329.99 right now. Featuring mineral-filled polypropylene cones that are a good fit in most cars, it comes with multiple mounting patterns on the woofer frame itself for an easy fit providing drivers are replacing stock 6.5-inch speakers.

Power handling is pretty standard at 120 watts per set, or 60 watts per speaker, with 91dB of sensitivity with Butyl rubber speaker surrounds to calm any distortion, with a surprising amount of bass depth for the woofer cone size. The tweeters feature 0.75-inch silk dome diaphragms that put out smooth yet-solid highs and less fatigue on and off axis, coming complete with three levels of attenuation and a tweeter protector. There's an argument to be made on silk vs. metal tweeters, but for the price point, those looking for a warm tone will be very happy with C2-650 component kit.

Other tech nerdy specifications include a 1-inch voice coil on Kapton former, premium Mylar capacitors, premium air-core inductors, a flat symmetrical roll spider, and included protective speaker grilles. For under $350 with a 1-year manufacturer's warranty, JL Audio C2-650 is a great choice for a budget component kit.

First-time drivers rocking a cheap car to keep insurance premiums down will likely benefit from upgrading their car speaker system to the Kicker 46CSS654. It's a component system for a very reasonable price point at $152.96, especially considering the 6.5-inch speakers feature Polypropylene woofers and titanium dome tweeters. This delivers ultra-clean bass thanks to the extended voice coil and higher volumes in high frequencies, which is helped along by Neodymium tweeter magnets and phase plugs that help with distortion and better clarity.

This component system isn't going to compete with one double its price, but it's good value for money. It has 100W power handling and a 35Hz low-end to 21kHz high-end, which is going to be an instant upgrade on a budget car. It's proper component sound at a price point that borders impulse buy territory, and if I was still driving my Nissan Micra from 2012, it would be a decent upgrade.

It uses UV-treated poly-foam surrounds to help with direct heat or direct sunlight, with three tweeter mounting options for flush, angled, and surface levels. Kicker 46CSS654 is designed to be a worthwhile step up from dull factory speakers, so for someone who wants to pack a better punch while listening to Metallica but doesn't expect it to sound like an arena show.

Looking for an easy car speaker upgrade for under $100? The Polk Audio DB652 is a 6.5-inch 2-way coaxial speaker that's a far simpler install than component kits, with a 40Hz low end, a 22kHz frequency response, and a 300W peak. It features a Polypropylene woofer cone and a 3/4-inch silk dome tweeter designed to deliver smooth highs while being very durable. 

It's IP56 marine-rated too, which is a great feature to have on a car speaker that's going to be installed in an active user's car. It bats away heat, handles moisture, and is UV light-treated, making it a solid choice for an off-road car or convertible too. It's not going to go up against $500 and higher speakers, but it's an honest buy at $85 on Amazon, with some nice additional proprietary features from Polk Audio such as Dynamic Balance. Laser imaging tech has been used during the design process to identify the best speaker materials to combine, resulting in low to no distortion.

Drivers will likely want to buy at least two Polk Audio DB652 to replace the front passenger and driver-side door stock speakers. Even with a minimum $170 price tag that includes mounting hardware for 6.5-inch car speakers and grilles, it's a cheap and easy upgrade with noticeable results in budget and older model cars. There are also some free and easy ways to improve all car audio systems, such as using on-board EQ or optimizing balance and fade.

We decided to go with superior-quality car speakers based on budget, because anyone can make a list of expensive component systems that only a certain percentage of people can afford and justify. So by cross-referencing expert roundups with best-seller details from online retailers and average customer reviews, we put together an article with a car speaker for pretty much everyone. 

Specifications prioritized here include sensitivity, RMS power handling, frequency response, and build material, which we feel are the most important factors when shopping for a quality car speaker upgrade. Some people want a plug-and-play upgrade, which is why it was important to include drop-in coaxial speakers for a quick boost in audio quality, alongside component bundles for enthusiast buyers.

Focusing on what makes the woofer cone and tweeter special, such as unique cone structures and materials or silk and metal tweeters, was also a big factor in finding car speakers that stand out in an oversaturated market. There are picks here that draw power from the factory head unit alongside component units that feature their own head or amp to handle high-resolution audio. Best sellers have also been taken into consideration, but they don't always represent the full picture. We've also looked at spec sheets for each speaker choice to make sure every recommendation is worth its price tag.