The Best 6.5 Coaxial Car Speakers -Top 5 For 2021

If you take your music seriously and you spend a lot of time driving, you’ve probably seriously considered beefing up the speaker system in your car. And if you haven’t, then check out our top pick for the best 6.5 coaxial speaker, the PolkDB652 Ultra. Music is only as good as the speakers it’s coming out of, and I can’t tell you how many times I’ve heard a song in a new light just because I had access to a better audio system than usual.

Of course, a new car audio system can take up a lot of room and be a bit of an endeavor. That is unless you buy a coaxial car speaker. Coaxial speakers are perfectly designed to be small, and that’s why there are enough small coaxial speakers out there that we were able to focus on only coaxial car speakers with a diameter of 6.5 inches. You won’t need to lose any breathing room making sure that your car radio sounds better than ever.

Carry on reading to see our full list of the best 6.5 coaxial car speakers, followed by a recap breaking down what makes each product on our list stand out. Or jump straight to our number #1 pick on Amazon here.

What Should You Look For in 6.5 Coaxial Car Speakers?

Any die-hard audiophile will probably already know what they’re looking for in their car speakers, but it’s always good to review a little. Besides, a lot of our readers might be just beginning to delve into the world of audio technology, and we want to make sure you don’t feel overwhelmed while you start your journey. That’s why we’re going to provide you with an easy-to-understand rubric to help you keep track of our list and follow along with our thought process. By the time you finish reading our criteria, you’ll feel like a seasoned expert regarding car audio systems, and you’ll be more than ready to read our list and even conduct your own further research if we can’t find the speakers you’re looking for.

Criteria #1: Frequency Range – There’s a beautiful range of high notes and low notes that come together to make the best music out there, and we want to make sure you have access to the full package, all the way from the graceful soprano voices to those rolling and rumbling bass lines. Frequency range will be expressed in Hertz, and it will tell you the lowest and highest frequencies a speaker is capable of outputting clearly. We don’t want you to miss out on part of the musical experience because your speaker can’t handle those low notes or ignores those high notes.

Criteria #2: Volume – If you ask me, the only thing better than music is loud music. And while you may not agree (your eardrums will thank you), we want to make sure that you have the option. We’re going to make sure that our list includes the most powerful speakers on the market that can really crank things up to 11 and blast that volume. If you want to feel like you’re front and center at a rock or metal concert, we’ll make sure to find the perfect 6.5 coaxial car speaker for you.

Criteria #3: Design- “Design” is, admittedly, a pretty vague term, so I’ll elaborate. We want to make sure that your new coaxial car speakers are made from nothing but the most high-quality materials out there, so that they’ll last longer and deliver the top-tier performance you deserve. We’ll also make sure to prioritize speakers that have an easy-to-install design, so that you don’t need to earn a bachelor’s degree in engineering just to install your new car speakers. A good design is more than just a pretty package, and all of the finer details can go a long way and come together to bump a set of speakers up to the next level.

Criteria #4: Price – We’re not here to make you spend a ton of money for no reason. Meeting this criterion is less about being cheap and more about justifying your price. We’d rather buy an expensive product that’s cheaper than it should be than waste money on a cheaper product that isn’t worth the money and that will just break on you or not perform well.

best 6.5 coaxial car speakers

Here’s How We’ve Determined the Best 6.5 Coaxial Car Speakers

We measured the specs of the top products on the market against our listed criteria to see how they held up and if they’re worth buying. We then checked customer reviews, blog posts, and “best 6.5 coaxial car speakers” articles to see if the products on our list performed as advertised. We also made sure to include a wide variety of car speakers that fall into different price ranges and offer different features. This way, everybody will be able to find the 6.5 coaxial car speakers that fit their budget and meet their niche desires. We want to make sure that everyone finishes our list feeling satisfied.

And without further ado, here is our list – tailored to your specific needs – of the best 6.5 coaxial car speakers. 

#1: Polk DB652 UltraMarine Dynamic Balance Coaxial Speakers (Best Value – All-Purpose)

Our list starts off with the affordable and well-priced Polk DB652 UltraMarine Dynamic Balance Coaxial Speakers. The first 6.5-inch coaxial speakers on our list boast 92 dB sensitivity that will let you crank up the volume and sing your heart out. With a great frequency range of 40 Hz to 22 kHz, you’ll have the full scale of music at your disposal. Right there, the Polk DB652 UltraMarine Dynamic Balance Coaxial Speakers are firing on all cylinders on our first two priorities.

And to add on to that amazing volume and frequency range, our number-one ranked Polk DB652 UltraMarine Dynamic Balance Coaxial Speakers have a durable build that can handle a sustained current of 100 watts and a max current of 300 watts, so you can use every decibel of volume at your disposal without worrying that these Polk 6.5 coaxial speakers will blow out on you.

The Speakers Hunter website praised the Polk DB652 UltraMarine Dynamic Balance Coaxial Speakers for being versatile and durable, so you can be sure that your money will go to a reliable product, and you’ll be able to enjoy the wide variety of genres in your collection. Plus, the sturdy housing boosts the bass in these speakers. Feel free to blast that hip hop and dubstep. Finally, our top-ranked speakers can handle all kinds of weather conditions, making them the perfect musical companion for your cross-country road trip.

Where the Polk DB652 UltraMarine Dynamic Balance Coaxial Speakers really shine is in their price. While a lot of the other speakers out there will cost you an arm and a leg, our top-ranked coaxial speakers from Polk are nice and affordable and won’t have you budgeting out the rest of the month. The Polk DB652 UltraMarine Dynamic Balance Coaxial Speakers are a nice little treat to you from you.

Of course, Polk is also one of the more prominent brands in the car audio market, and the DB652 speakers have earned their fair share of praise, being featured on multiple lists of the best coaxial car speakers and garnering a lot of attention on Amazon. With well over 600 reviews from the paying customers, the Polk DB652 UltraMarine Dynamic Balance Coaxial Speakers were praised across the board for having great quality and great volume.

And did we mention they’re cheap? This is the best value out there, so no matter what you’re looking for to replace your factory speakers, you’ll probably want to start your search by checking out the Polk DB652 UltraMarine Dynamic Balance Coaxial Speakers.

#2: JL Audio C5-650X Coaxial Speakers (Best Overall Speakers)

Nobody likes to spend more money for no reason, but some customers are certainly more willing than others to spend money if the reason is compelling enough. And while the Polk DB652 UltraMarine Dynamic Balance Coaxial Speakers may be a great value, nothing is perfect for everyone. If you’re still playing the field and you’ve decided that you’d rather pay top-dollar to get top-dollar, then you’ll have to check out the JL Audio C5-650X Coaxial Speakers.

These speakers may cost a pretty penny, but, as the saying goes, you get what you pay for, and JL Audio knows how to deliver the best speakers, even if they’re not exactly handing them out for free. Here are some of the standout features that might convince you to loosen up your wallet and pay JL Audio to walk away with the best speakers available.

Reason #1 to Choose This Product: Improved Bass

With a frequency range that bottoms out at 38 Hertz, the JL Audio C5-650X Coaxial Speakers provide just about the best bass available from any coaxial car speaker on the market. And with an upper limit of 25 kHz, you’re actually getting clearer low notes and high notes than you’d get from the Polk DB652 UltraMarine Dynamic Balance Coaxial Speakers.

I can’t think of a selling point for a set of car speakers more compelling than “you’ll hear more music.” And yes, you could always go the all-out route and buy a subwoofer to add bass to your audio system, but there’s something nice about having all of your needs met from one product in one place. Besides, buying a different coaxial speaker and a subwoofer could get about as pricey as the JL Audio C5-650X Coaxial Speakers.

Reason #2 to Choose This Product: Convertable Component

With the convertible component of the JL Audio C5-650X Coaxial Speakers, you have your options laid out for you in regards to how you can set up these coaxial speakers. You can either set them up with the tweeter inside the woofer, as is standard, or you can mount the woofer and tweeter separately. The latter option will create a surround-sound effect that’s perfect if you want to make sure that the passengers in the back are enjoying the music just as much as you are. Of course, it’s also great if you just enjoy being enveloped by the music. The convertible component of the JL Audio C5-650X Coaxial Speakers is perfect for anyone who wants the most immersive musical experience possible.

In addition to the fantastic frequency range and the flexible convertible design, the JL Audio C5-650X Coaxial Speakers come with a sturdy and durable frame, and it’s not too tough to look at either. You’re getting beauty and brains with these premium-grade JL Audio speakers.

Plus, the Our JL Audio coaxial speakers feature a soft silk dome that has Ferrofluid cooling and damping to prevent overheating at the higher frequencies, so you can blast everything from classical operas to the best of Freddy Mercury without a care in the world.

Finally, the two-way external crossover gives you a lot of flexibility in terms of settings, so you can make sure these speakers match your exact tastes and needs. Really, the only flaw to speak of is the price, and when you look at everything else, that starts to seem pretty justified. If you feel like treating yourself or someone else, then you’ll want to buy the JL Audio C5-650X Coaxial Speakers.

#3: Alpine Spr-60 6.5-Inch Coaxial Speakers (Best for Loud Volume)

At the end of the day, there’s one main task that your speakers are supposed to accomplish – making your music louder. If you take this more seriously than anything else, then the Alpine Spr-60 6.5-Inch Coaxial Speakers are calling your name. The folks at Alpine understand that sometimes you just have to embrace your inner Spinal Tap, and that’s why they made sure that this speaker can handle as much power as possible, so you can crank the volume all the way up without putting a strain on these speakers or getting any distortion.

The Alpine Spr-60 6.5-Inch Coaxial Speakers feature a frequency range of 65 Hz to 29 kHz, so you’ll have access to high notes you didn’t even know existed. While that lower limit is definitely higher than what we’ve grown used to, these Alpine speakers were actually complimented for the sound quality of their bass notes, largely to do the multi-layer hybrid fiber woofer cones incorporated into the design. That being said, if you prefer to trust the numbers and you need pounding bass, you might want to pass on the Alpine Spr-60 6.5-Inch Coaxial Speakers.

Finally, the mounting brackets have been criticized for being a little on the fragile side, so if you don’t want to worry about delicate speakers, then you’ll want to do your shopping elsewhere. Of course, it’s possible that the size of your speaker and car will match up and you won’t need the brackets at all.

So if you’re a real fiend for deafening music while you drive, then there’s just nowhere else to look. Buy the Alpine Spr-60 6.5-Inch Coaxial Speakers and shatter some windows with your heavy metal. More info on the Alpine Spr 60 coaxial speaker review

#4: Rockford Fosgate R165X3 6.5″ 180W 3 Way Car Audio Coaxial Speakers (Best Low Cost)

Rockford Fosgate is one of the most respected car speaker brand names out there, so when you see that they have a product on the market that’s this cheap, you’ll definitely want to take the time to check it out. This 4-pack of coaxial car speakers will let you deck out every corner of your car in upgraded speakers and enjoy a surround sound effect, and you’ll be able to do it on a limited budget. You’ll get the best sound quality possible without declaring bankruptcy.

The Rockford Fosgate R165X3 6.5″ 180W 3 Way Car Audio Coaxial Speakers have enough power to get nice and loud, and they’ve been praised for giving you a clean sound that doesn’t add any needless distortion, so you’ll really feel like you’re at your own personal concert while you drive to work in the morning.

Unfortunately, as is usually the case, there is a catch. The affordable Rockford Fosgate R165X3 6.5″ 180W 3 Way Car Audio Coaxial Speakers have been criticized for falling a little short when it comes to the bass range. This might not be a deal-breaker for some customers, and these Rockford car speakers are still the best way to save your money. So if you don’t mind missing out on the lower range, then the Rockford Fosgate R165X3 6.5″ 180W 3 Way Car Audio Coaxial Speakers are definitely for you.

Of course, if you want to feel your brain rumble with that funky bass solo, then you might want to splurge for a more expensive option. You can also buy these budget speakers and then purchase a separate subwoofer to make the car audio system of your dreams. If you play your cards right, then you’ll still be spending less money than you would if you buy some of the fancier 6.5-inch coaxials that actually provide solid bass on their own.

Any way you spin it, the Rockford Fosgate R165X3 6.5″ 180W 3 Way Car Audio Coaxial Speakers are the dream car speakers for anyone who wants to beef up the sound quality in their car without beefing up their debt.

#5: Rockford Fosgate Power T1675 Speakers (Best for Bass)

Before I go any further, I should clarify that “best for bass” really means “best for bass…except the JL Audio C5-650X Coaxial Speakers.” Of course, since our second Rockford Fosgate speakers cost about a quarter the price of our industrial-grade JL Audio speakers, that’s a pretty worthwhile distinction. If you want head-pounding bass but you don’t want to blow your savings on a set of speakers, then the Rockford Fosgate Power T1675 Speakers are a great choice for you.

These Rockford Fosgate speakers will make a great replacement for your factory speakers, and despite the higher frequency range of 55 Hz to 22 kHz, reviewers reported that these speakers provide fantastic clarity on the bass notes. This is accredited to the larger cone which provides more speaker area, and therefore better bass sound quality.

In addition to the top-tier bass sound, the Rockford Fosgate Power T1675 Speakers offer a great sensitivity rating of 88 dB, which means that you’ll be able to crank up the volume without using a lot of power. This is great, considering the lower peak power of these speakers, which is just 140 watts – much lower than the other products on our list.

And as we alluded to, the price of the Rockford Fosgate Power T1675 Speakers is nothing to sneeze at, so we’re definitely seeing a pattern from Rockford Fosgate. The biggest flaw with our second Rockford Fosgate car speakers is the big size, which might get a little annoying if you have a smaller car. But if that doesn’t bother you and you want top-tier bass for a bargain bin price, then go ahead and buy the Rockford Fosgate Power T1675 Speakers for your ride.

Frequently Asked Questions

Not everyone is a car audio system expert, and there’s still plenty that might be a little confusing to you. It’s our job to make sure that you feel as informed as possible when you finish our article, and we want to take the time to answer any questions that might have come to your mind. Unfortunately, we aren’t mind-readers, so we won’t be able to guess your more specific questions, but we’re going to make sure to address the usual suspects. Keep reading to see our frequently asked questions section that we hope will answer all of your questions and address all of your concerns.

How Do I Set Up My New Coaxial Speakers?

jbl coaxial speaker

This is probably the most important place to start. Your speakers won’t exactly do you any good if you can’t figure out how to get them connected, and God forbid you make a mistake and damage them before you even get to use them.
If you plan on installing these speakers yourself, I highly recommend watching some YouTube videos on speaker installation, as visual aids can help more than I ever could with just the written word. That being said, I’m going to give it the old college try in the hopes that my instructions will at least be a supplementary resource to any videos out there.
Thankfully, installing car speakers is really not as difficult as it sounds, and though it sounds daunting, I’m sure you’ll be able to figure it out. The first step is to remove your old speakers. To get at them, you’ll have to remove the door panels from your car. This is different for each car, but you’ll usually just need a simple screwdriver.
After you’ve removed the door panels, you need to remove the speakers themselves. Just as with the door panels, this usually requires nothing more than a screwdriver, but you’ll sometimes need a power drill.
After the speaker is out, remove the wires, and you’re ready to start installing your fancy new replacement. If it doesn’t fit perfectly, you may need brackets to hold it in place. There may be other changes that you’ll need to make to accommodate any size issues.
Next, install the tweeters – in a dry location, as water and moisture will damage them. Finally, connect the speakers to the amplifier or receiver, and you’re ready to rock!

Should I Get Coaxial or Component Speakers?

coaxial car speakers

During your research into coaxial speakers, it’s very possible that you’ve also come across component speakers, and you may be wondering which product is best for you. The answer is pretty straightforward, so I won’t beat around the bush too much. Component speakers offer better performance, but they’re much more expensive.
You may have noticed that, with the exception of the JL Audio C5-650X Coaxial Speakers, all of the speakers on our list range from affordable to downright cheap. If you’re only looking at component speakers, that standard becomes much harder to reach. If you were already interested in the expensive JL Audio C5-650X Coaxial Speakers, then it might be worth your time to explore the marker of component speakers a little and see if there’s anything there that appeals to you more.
Of course, if you’ve been focusing on the cheaper items on our list, then you definitely won’t want to waste your time looking into a more expensive market, and you should just stick to coaxial speakers for now.

Verdict: Your Best 6.5 Coaxial Car Speakers

We’re reaching the end of our list, and you’re hopefully starting to get a good idea of which of our products is best for you. But if you haven’t made up your mind yet, not to worry. We don’t want to rush, and we know how important it is to make sure you’re getting the 6.5 coaxial car speakers that are perfect for you. That’s why we’re going to recap all of our 6.5 coaxial car speakers and focus on their standout features. This way, you’ll be able to see the highlights and really know what each product has to offer for you.

If you want the best value for your money, pick the Polk DB652 UltraMarine Dynamic Balance Coaxial Speakers.

If you’ve finally decided that your factory speakers just aren’t cutting it, then the first product on your shopping tour has to be the Polk Audio DB652 UltraMarine Dynamic Balance Coaxial Speakers. These speakers offer everything you need, including a great frequency range and fantastic volume, without being too expensive. On top of that, they’re nice and durable, and they can handle tougher weather conditions. So you’re getting speakers that can handle any genre of music and that won’t break down on you. To get that all for a reasonable price is a steal, and it’s definitely the best value out there when you consider that you won’t have to replace these speakers any time soon. The Polk Audio DB652 UltraMarine Dynamic Balance Coaxial Speakers were an easy pick to be our top-ranked speakers.

If you need the loudest volume, pick the Alpine Spr-60 6.5-Inch Coaxial Speakers.

As a die-hard metalhead, I understand that sometimes all you want is to crank up the volume until you can’t hear yourself think. Alpine, apparently, understands too, because the Alpine Spr-60 6.5-Inch Coaxial Speakers are some of the best speakers on the market for blasting the noise until everything around you is a blur. And you’re not just getting loud and powerful speakers. The Alpine Spr-60 6.5-Inch Coaxial Speakers have a fantastic range that goes all the way from the lowest bass notes to the highest treble notes. These speakers are one of the more expensive products on our list, but they’re well worth it for the deafening volume and fantastic quality.

If you want to keep the spending cheap, pick the Rockford Fosgate R165X3 6.5″ 180W 3 Way Car Audio Coaxial Speakers.

If you want to replace your factory speakers without getting to the point where you might as well just buy a new car altogether, look no further than the Rockford Fosgate R165X3 6.5″ 180W 3 Way Car Audio Coaxial Speakers. I almost don’t know what to say, but rest assured you’ll be happy with your decision to be stingy when you hear the Rockford Fosgate R165X3 6.5″ 180W 3 Way Car Audio Coaxial Speakers. These budget speakers have all of the specs you need and offer fantastic performance, with the only drawback being slightly sub-par bass. It’s almost nice that we have a flaw to point to, or the price would just seem too good to be true. If you don’t mind missing out on some bass, or if you already have a solid set of subwoofers, then the Rockford Fosgate R165X3 6.5″ 180W 3 Way Car Audio Coaxial Speakers are the best way to upgrade your car’s sound system without breaking the bank.

That brings us to an endpoint, and you’re now an expert on all of the best 6.5-inch coaxial speakers out there, so you’re ready to be the best audiophile you can be with the best sound quality in your car. If you weren’t very intrigued by the highlighted speakers above, you may find that the versatile and convertible JL Audio C5-650X Coaxial Speakers grab your interest more. You may also be a fan of the brain-pounding bass found in the Rockford Fosgate Power T1675 Speakers.

Remember, each one of our speakers has one specific feature or two that sets them apart from the rest of the field, so fixate on that feature to decide if a product is right for you. Knowing which features you need will help you speed up the buying process by not wasting time on products that don’t fit your needs.

That’s all for now. We hope our list has helped, and we hope your new speakers deliver the sound quality that you want and deserve!

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