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Upgrading the speakers in your Mazda CX-5 can make daily drives more enjoyable by improving clarity, dynamics, and bass response. Choosing the right 6×8 speakers matters because fit, power handling, and mounting depth affect installation and long-term performance. This guide highlights our shortlisted top picks for 6×8 speakers that work with the Mazda CX-5, and explains the evaluation criteria we used, including sound quality, fitment, and durability. Read on to see which options best match your priorities and installation constraints.
Looking for other parts? See all Mazda CX-5 parts & accessories.
Top Picks at a Glance
| Best Reviewed A top-rated pick with lots of positive feedback | Kenwood KFC‑C6866S 6×8 2‑Way Car Speakers (Pair) |  |
| Most Popular A crowd favorite that many people choose with confidence | MB Quart FKB168 6×8" 200W Coaxial Car Speakers (4-Pack) |  |
| Best Quality Built to a higher standard if you want something more solid | JBL GX8628 6×8" 2-Way Coaxial Car Speakers (Pair) |  |
| Best Budget The cheapest option that still gets the job done reliably | JENSEN JS-Series JS6804 4-Way 5×7/6×8 Car Speaker Pair |  |
| Most Sold A high-volume bestseller chosen again and again | JBL Club 8622F 6×8" Coaxial Car Speakers (Pair) |  |
| Best Value for Money The sweet spot between price and what you get | JBL Club 8620 6×8 2-Way Coaxial Car Speakers (Pair) |  |
| Best Overall The best all-around choice for most situations | Alphasonik AS268P 6×8 3-Way Car Speakers (2 Pairs) |  |
1. Kenwood KFC‑C6866S 6×8 2‑Way Car Speakers (Pair)
| Speaker Type | Coaxial |
|---|---|
| Impedance | 4 Ohms |
| Tweeter Diameter | 1 Inches |
| Power (Max/RMS) | 250W max, 30W RMS |
The Kenwood KFC-C6866S are 6×8 two-way coaxial speakers meant as a direct-style replacement for factory door or rear speakers in vehicles that accept 6×8 units. They combine a polypropylene paper cone woofer for midbass and a 1-inch PEI balanced-dome tweeter for improved high-frequency detail. Installation is straightforward for a standard 6×8 mounting and the shallow 5/16-inch mounting height helps them fit behind many factory grilles. In use they deliver clearer vocal and midrange presence than many stock speakers and the tweeter adds usable sparkle without needing an external crossover. Practical benefits include reliable, familiar Kenwood construction and compatibility with typical car stereos at modest power levels. Limitations are that these are not bass-focused drivers, so you should not expect deep low-end without a dedicated subwoofer, and they come as a wired coaxial pair with basic mounting hardware rather than vehicle-specific adapters. For reliability-focused buyers seeking a durable upgrade that restores clarity, these are a sensible, no-frills choice for the Mazda CX-5 when 6×8 replacements are required.
Best for: A reliability-focused buyer who wants a durable, factory-style sound upgrade that restores clarity to the factory audio system in a Mazda CX-5 without fuss or complex installation.
Less Ideal for: Audiophiles seeking deep bass or those who want a component system with separate crossovers and separate amplifiers should look at component speakers and a subwoofer instead.
- Balanced-dome 1-inch tweeter improves high-frequency clarity
- Polypropylene paper cone woofer provides solid midrange and midbass
- Shallow mounting height increases chance of fit behind factory grilles
- Built as a matched pair with common 4-ohm impedance for easy hookup
- Not designed to produce deep bass without a subwoofer
- Includes basic hardware only so vehicle-specific adapters may be required
Verdict A dependable, easy-to-install 6×8 replacement that improves clarity and midrange for Mazda CX-5 owners but will not replace the low-end of a dedicated subwoofer.
2. MB Quart FKB168 6×8" 200W Coaxial Car Speakers (4-Pack)
| Speaker Type | Coaxial, Tweeter |
|---|---|
| Impedance | 4 Ohms |
| Speaker Maximum Output Power | 200 Watts |
| Tweeter Diameter | 1 Inches |
| Frequency Response | 20 KHz |
These MB Quart FKB168 6×8 coaxial speakers are sold as a four-piece set intended to replace factory 6x8s and bring clearer highs and tighter midrange to a vehicle audio setup. They pair lightweight thermal-formed polypropylene cones with aluminum dome tweeters and a 6 dB internal crossover so the tweeter integration is smooth without external components. In real-world use they work best as a direct swap into dash or door openings when you want an audible step up from stock without adding external crossovers or new mounting adapters. The butyl rubber surrounds and Kapton voice coil formers improve durability and heat handling for highway driving and extended listening. Expect better detail and cleaner treble, but realize they are not a substitute for a dedicated midrange plus subwoofer system if you want deep low-frequency impact. They also benefit from more amplifier power than a weak factory head unit to reach their potential. Fitment and mounting depth are compact for most 6×8 locations in a Mazda CX-5 but check clearance for grills and factory brackets before installation.
Best for: Convenience-driven buyers who want a straightforward, drop-in sound upgrade for their Mazda CX-5 without reworking speaker wiring or adding external crossovers.
Less Ideal for: Audiophiles seeking deep low-frequency output or drivers planning a high-power custom system without adding a separate subwoofer should consider component speakers or a system with a dedicated amp and sub instead.
- Includes four speakers for a full vehicle pair swap so front and rear replacements are covered
- Aluminum dome tweeters provide clear highs and improved reliability over stock tweeters
- Butyl rubber surrounds and Kapton voice coil formers increase durability and heat dissipation
- Internal 6 dB crossover simplifies installation with no external components required
- Sensitivity is modest so they often need an external amplifier for fuller sound and stronger bass
- They extend only to mid-bass frequencies and will not reproduce deep bass without adding a subwoofer
Verdict A convenient, factory-style 6×8 upgrade for the Mazda CX-5 that improves clarity and midrange detail but needs extra amplification or a sub for strong bass.
3. JBL GX8628 6×8" 2-Way Coaxial Car Speakers (Pair)
| Peak Power Handling | 180W each |
|---|---|
| Continuous Power Handling | 60W each |
| Frequency Response | 50 Hz – 21 kHz |
| Sensitivity | 92 dB @ 2.83V |
| Nominal Impedance | 2.3 ohms |
The JBL GX8628 are 6×8-inch 2-way coaxial speakers built for car audio upgrades where clarity and dependable power handling matter. They pair a Plus One woofer cone with an edge-driven soft dome tweeter and a Harman-designed tweeter deflector to extend frequency response up to 21 kHz and keep vocals and upper mids defined. Rated for 180 watts peak (60 watts RMS each) with nominal impedance around 2.3 ohms and 92 dB sensitivity, these speakers work well on factory head units and respond positively to moderate external amplification. Typical use is direct replacement in factory 6×8 openings on vehicles like the Mazda CX-5 to lift detail and improve bass response without huge enclosure changes. Notable benefits include JBL voice-matching and individually voiced drivers for balanced sound. Limitations are modest continuous power handling compared with dedicated component systems and the speakers are not intended to reproduce deep sub-bass on their own, so a subwoofer is recommended for low-end impact in large cabins. Installation may require retention of factory mounting hardware or adapters for some CX-5 trim levels.
Best for: Performance-oriented buyers who prioritize accurate midrange and clear highs and want a factory-quality speaker upgrade for in-car listening and improved imaging.
Less Ideal for: Buyers seeking ground-shaking bass as a primary goal or those looking for a full component speaker set; also not ideal if you need an exact drop-in that never requires adapters across all trim levels.
- Extended frequency response to 21 kHz delivers clear highs and detail.
- Plus One woofer cone improves midbass presence compared with basic stock speakers.
- Designed voice-matching and individually voiced drivers for balanced in-car sound.
- Good sensitivity makes them usable with factory head units and modest amplifiers.
- Rated RMS power is moderate, so they will benefit from an external amp for louder, cleaner output.
- Not designed to reproduce deep sub-bass, so a separate subwoofer is needed for full low-end.
- May require mounting adapters or modifications for a perfect fit in some vehicle trims.
Verdict A balanced, performance-focused 6×8 coaxial upgrade that sharpens highs and mids for improved in-cabin sound but needs a sub or amp to fill out the lowest and loudest demands.
4. JENSEN JS-Series JS6804 4-Way 5×7/6×8 Car Speaker Pair
| Speaker Design | 4-Way |
|---|---|
| RMS Power | 40 Watts |
| Peak Power | 160 Watts |
| Impedance | 4-Ohm |
| Frequency Response | 70Hz – 20kHz |
The Jensen JS6804 is a 4-way coaxial speaker pair designed as a direct fit for vehicles that use 5×7 or 6×8 speaker openings, offering an affordable upgrade to factory sound. In a Mazda CX-5 it replaces factory door or rear speakers without major modification and provides clearer midrange thanks to a 30mm Mylar balanced dome and crisper highs from the piezo tweeters. The polypropylene woofer resists moisture and reduces distortion, so it holds up to road conditions and delivers a cleaner sound at moderate volume. With 40 watts RMS per speaker and 160 watts peak the JS6804 pairs well with factory head units or modest aftermarket amps but will not produce deep sub-bass on its own. Sensitivity around 87 dB means acceptable efficiency, though audiophiles wanting powerful low end or very high output will need a larger system or external amplification. For a budget-conscious CX-5 owner this model improves clarity and overall tonal balance while keeping installation simple and inexpensive.
Best for: Budget-conscious buyers who want a straightforward, affordable speaker upgrade for a Mazda CX-5 to improve clarity and midrange detail without replacing the head unit or adding an amplifier.
Less Ideal for: Listeners seeking deep bass or very high output for competition-level audio should consider adding a subwoofer and higher-power components instead of relying on these speakers alone.
- Direct-fit 5×7/6×8 sizing suitable for common vehicle speaker locations
- 4-way design with Mylar midrange and piezo tweeter for improved vocal clarity and highs
- Polypropylene woofer resists moisture and reduces cone distortion for consistent performance
- Modest power handling that pairs well with factory radios or small amps
- Limited bass extension compared with larger speakers or dedicated subwoofers
- Peak power rating is high but continuous RMS is modest, limiting very loud playback potential
Verdict An inexpensive, easy-to-install 4-way speaker pair that noticeably sharpens vocals and highs in a Mazda CX-5 but will need a sub or more power for strong bass.
5. JBL Club 8622F 6×8" Coaxial Car Speakers (Pair)
| Speaker Type | Coaxial |
|---|---|
| Speaker Size | 6×8" |
| Impedance | 3 Ohms |
| Tweeter Diameter | 1 Inches |
| Number of Items | 2 |
These JBL Club 8622F 6×8" coaxial speakers replace factory door speakers to deliver clearer highs and stronger low-end than most OEM units. They pair a polypropylene woofer with an edge-driven silk-dome tweeter and a low-impedance design that accepts more power from a Mazda CX-5 factory head unit or an aftermarket deck. In everyday use they provide punchier bass and crisper mids for vocals and instruments, and many users report noticeable volume and clarity gains without adding an amp. The polypropylene cone and UV-resistant design make them suitable for a vehicle interior exposed to sunlight. Limitations include a modest 60 W RMS rating so they will benefit from an outboard amplifier for very loud listening, and pushing extreme bass without a subwoofer can cause distortion. Fitment is straightforward for 6×8" openings in the CX-5 but grille covers are not included so you may need factory grilles or aftermarket adapters.
Best for: Practical, risk-averse Mazda CX-5 owners who want a reliable, factory-style upgrade that noticeably improves clarity and bass without changing speaker locations.
Less Ideal for: Audiophiles seeking very high output or deep bass without adding an amplifier and subwoofer should look at powered or higher-end component options instead.
- Designed as a direct factory-style 6×8" replacement for improved clarity over stock speakers
- Polypropylene woofer with Plus One cone design for stronger low-frequency output for its size
- Edge-driven silk-dome tweeter delivers clearer high frequencies and detail
- Low-impedance design lets the stock Mazda CX-5 head unit drive them louder without immediate need for an amp
- 60 W RMS power suggests they are best for moderate listening levels unless paired with an external amp
- No grills included which may require retaining factory grilles or buying adapters
- Some reports of shorter lifespan or early failures in a minority of units
Verdict A safe, factory-style 6×8" upgrade for Mazda CX-5s that brings clearer highs and firmer bass at moderate volumes but rewards amp support for louder setups.
6. JBL Club 8620 6×8 2-Way Coaxial Car Speakers (Pair)
| Speaker Size | 6×8 inches |
|---|---|
| Power (RMS) | 55 watts each |
| Peak Power | 165 watts each |
| Impedance | 3 Ohms |
| Frequency Response | 65Hz – 20kHz |
The JBL Club 8620 is a 6×8 two-way coaxial speaker pair designed as an affordable upgrade for vehicle sound systems. In use it replaces factory 6×8 woofers and adds a polypropylene plus one woofer cone and an edge-driven PEI balanced dome tweeter for clearer highs and tighter midbass. With 55 watts RMS per speaker (165 watts peak each) and 3 ohm impedance these speakers respond well to a modest amplifier or a healthy factory head unit, producing punchy bass and clear vocal detail in everyday driving. Included crossovers help protect the tweeters and simplify installation, though JBL supplies no long hookup wire so you may need to add wiring and small fasteners depending on the CX-5 mounting. People report solid build quality and a lively sound that benefits from a sealed or insulated door cavity. Limitations are modest sensitivity to very low power head units and the need to source extra wiring or foam sealing for best bass performance. For a practical, cost-conscious upgrade that fits common 6×8 openings in the Mazda CX-5, these speakers deliver a noticeable step up from stock without requiring a major amplifier overhaul.
Best for: Practical optimizers who want a noticeable, budget-friendly audio upgrade for daily driving that improves clarity and punch without major system changes.
Less Ideal for: Audiophiles seeking the absolute highest fidelity or installers planning a high-power competition system should consider component speakers and dedicated amplification instead.
- Balanced two-way design with PEI dome tweeter for clearer highs and defined mids
- Decent power handling (55W RMS per speaker) that pairs well with a modest amp or stronger factory head units
- Includes crossovers for proper frequency separation and tweeter protection
- Fits common 6×8 mounting locations and provides a clear upgrade over many stock speakers
- Does not include speaker hookup wire or mounting hardware for every vehicle, so additional parts may be required
- 3 ohm impedance can draw more current than typical 4 ohm speakers, which may limit compatibility with weak head units
Verdict A practical, wallet-friendly 6×8 upgrade for the Mazda CX-5 that delivers punchy, clearer sound but may require extra wiring and modest power to reach its potential.
7. Alphasonik AS268P 6×8 3-Way Car Speakers (2 Pairs)
| Speaker Type | 3-Way Speaker |
|---|---|
| Impedance | 4 Ohms |
| Included Components | 4x Speakers, Coaxial Cables, Mounting Screws, Installation Manual |
| Frequency Response | 28 – 22,000 Hz |
| Sensitivity | 92 dB |
The Alphasonik AS268P ships as two pairs of 6×8 3-way coaxial speakers intended as a direct replacement-style upgrade for vehicle door or rear deck speakers. Each speaker is rated at 350 watts peak and 35 watts RMS with a 4 ohm impedance, and the quoted sensitivity and frequency range aim to deliver clearer highs and fuller midrange compared with many factory units. The kit includes mounting hardware, pigtails and coaxial leads to simplify installation in common mounting locations. In real-world Mazda CX-5 installs these speakers will typically be used on doors or rear locations to restore clarity and volume without adding an external amplifier. Expect noticeably improved vocal detail and midrange definition; bass is present but modest, so drivers who want deeper low end should plan a subwoofer later. Build quality and magnet size look modest, so long-term durability under heavy use is uncertain and peak power claims are optimistic compared with the listed RMS rating. For balanced buyers seeking better sound for daily driving the AS268P offers strong value, but those after high-fidelity or powerful bass will want higher-end components or amplification.
Best for: A balanced all-round buyer who wants an affordable, straightforward sound upgrade for daily driving and values simplicity over audiophile-level performance.
Less Ideal for: Drivers seeking deep bass or competition-grade fidelity without adding an amplifier or subwoofer should consider higher-end components instead.
- Comes as two pairs with hardware and pigtails for easier in-vehicle installation.
- 3-way coaxial design improves clarity in highs and mids compared with typical stock speakers.
- High quoted sensitivity helps the speakers play louder from a factory head unit without an amp.
- Includes multiple mounting accessories so fewer additional purchases are needed.
- Low RMS power rating means limited clean loudness and weaker bass compared with powered setups.
- Not water resistant so exposure to moisture in door locations could reduce longevity.
- Peak wattage figures are marketing-oriented and do not reflect continuous performance.
Verdict Good value 3-way 6×8 speaker kit that noticeably upgrades factory sound for daily Mazda CX-5 use but needs a sub or amp for stronger bass.
Choosing the Right Mazda CX-5 6X8 Speakers: Key Factors to Consider
Physical Fit and Mounting Depth
Proper physical fit is essential because incorrect diameter or mounting depth can prevent installation or require door trimming. Measure the existing speaker opening and compare it to the replacement's mounting dimensions to avoid interference with window mechanisms or inner door panels.
Mounting depth matters when there is limited clearance behind the speaker. Shallow-mount designs often simplify installation in tight OEM cavities, while deeper drivers may need spacers or relocation. Also consider the screw pattern and whether adapter plates or retaining clips are required for the Mazda CX-5 mounting points.
Power Handling and Sensitivity
Power handling ratings indicate how much amplifier power a speaker can handle continuously and at peak. Choose speakers whose RMS and peak ratings match or slightly exceed the output of your head unit or amplifier to minimize distortion and risk of damage.
Sensitivity affects how loudly a speaker plays from a given power level. Higher-sensitivity drivers will produce more volume from the factory head unit, which is important if you do not plan to add an external amplifier. Balance power handling and sensitivity to suit your planned system.
Speaker Type: Coaxial Versus Component
Coaxial speakers combine tweeter and woofer in one assembly, simplifying installation and saving space in door locations. They are often the easiest upgrade path for a Mazda CX-5 if you want a straightforward swap and improved high-frequency detail without added complexity.
Component systems separate tweeters from woofers and offer better imaging and cleaner treble reproduction when installed properly. However, they require planning for tweeter placement and may need crossovers and extra wiring. Consider whether you want the performance gains enough to justify the more involved installation.
Frequency Response and Sound Signature
Frequency response gives an idea of how a speaker reproduces bass, mids, and highs. Look for drivers with extended midrange clarity and controlled low-end for balanced in-car sound, because cabin acoustics can emphasize or mask certain frequencies.
Think about your listening preferences: a neutral response suits mixed music collections, while a forward midrange emphasizes vocals and acoustic instruments. Consider whether you need enhanced low-frequency extension for fuller bass, and how that will interact with the CX-5's cabin size.
Build Quality and Weather Resistance
Car interiors can be humid and experience temperature swings, so durable materials matter. Cone materials, surround composition, and corrosion-resistant mounting hardware affect longevity and consistent performance over time.
Also check for water-resistant features if speakers are exposed during door panel removal or in vehicles with more moisture exposure. Better build quality often reduces the likelihood of rattles, foam degradation, and premature failure.
Ease of Installation and Compatibility
A speaker that is straightforward to install reduces labor time and the chance of wiring or mechanical issues. Compatibility with OEM wiring harnesses, included mounting hardware, and clear instructions all help simplify installation in the Mazda CX-5.
Consider whether adapters or additional brackets are needed, and whether the speaker requires new grilles or changes to the door card. If you plan to keep the factory head unit, check impedance and connector type to ensure a plug-and-play experience where possible.
FAQ
Will 6×8 speakers fit my Mazda CX-5 without modifications?
Many 6×8 speakers are designed to match common door openings, but fit depends on mounting depth and screw pattern. Check the speaker's physical dimensions and compare them to the CX-5 mounting points. Shallow-mount options often allow installation with little or no modification, while deeper drivers may need spacers or minor trimming.
Do I need an amplifier to run 6×8 speakers in a CX-5?
An amplifier is not always required, especially if you choose higher-sensitivity speakers that perform well from a factory head unit. However, adding an amplifier can provide cleaner power, reduce distortion at higher volumes, and unlock better dynamic range if you upgrade to lower-sensitivity or higher-power-handling speakers.
Are coaxial 6×8 speakers a good upgrade for door installation?
Coaxial 6×8 speakers are a practical upgrade because they combine tweeter and woofer in one unit, simplifying installation in door locations. They typically improve overall clarity and treble extension without needing extra tweeter placement, making them a convenient option for many CX-5 owners.
How do I match speaker impedance to my Mazda CX-5's audio system?
Most factory systems use 4-ohm speakers, but it can vary. Verify the impedance specification of your original speakers and choose replacements with compatible impedance to avoid overloading the head unit. If you plan to add an external amplifier, ensure the amp supports the speaker impedance you select.
Will upgrading to aftermarket 6×8 speakers improve bass response?
Upgrading to quality 6×8 drivers can enhance perceived bass due to better cone control and power handling, but door-mounted speakers have limited low-frequency output compared with subwoofers. Expect tighter and clearer bass rather than deep, room-filling low end, unless you add a dedicated subwoofer to the system.
What should I do if the new speakers rattle the door panels?
Rattles often indicate poor coupling or loose mounting hardware. Use proper mounting screws, consider foam or rubber gaskets between the speaker flange and door surface, and tighten fittings evenly. Address any loose interior trim or insulation to reduce sympathetic vibration that can affect sound quality.
How We Chose the Best Mazda CX-5 6X8 Speakers
We selected products that specifically match the Mazda CX-5 door mounting shapes and common factory speaker locations, focusing on items designed to fit without major modifications. Evaluation prioritized sound quality, physical fitment and mounting depth, power handling and sensitivity, build quality and materials, and ease of installation. Sound quality assessment emphasized balanced frequency response and clarity in midrange and bass for in-car listening. Fitment checks measured mounting diameter, depth, and grille clearance relevant to CX-5 doors. Power handling and sensitivity were considered to ensure compatibility with typical aftermarket and factory head units and amplifiers. Durability factors included cone materials, surround construction, and corrosion-resistant hardware for a vehicle environment. We excluded speakers that require extensive door modification, custom enclosures, or are incompatible with standard Mazda CX-5 mounting locations. We also omitted units that lack documented specifications needed to verify fit and performance.
Our full evaluation process is outlined in our review methodology.
Conclusion
Prioritize fitment, power handling, and sound signature when choosing 6×8 speakers for a Mazda CX-5. Ensuring the speaker physically fits the door opening and has compatible depth and mounting points reduces installation headaches. Balance sensitivity and power handling to match your head unit or planned amplifier, and consider build quality to ensure long-term reliability. Decide whether the simplicity of coaxial units or the performance potential of component setups better suits your listening goals and installation willingness.
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