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Upgrading the speakers in your Infiniti Q50 can make a dramatic difference in clarity, imaging, and bass control during everyday driving. Choosing the right 6×8 speakers matters because factory units often limit power handling and frequency range, which affects vocal detail and low-end punch.This guide highlights the top shortlisted 6×8 speakers for the Infiniti Q50, each selected for real-world performance and fit. We evaluated options across key criteria like power handling, sensitivity, and mounting depth to help you pick the right upgrade. Read on to see the picks and what to watch for when swapping your door speakers.
Looking for other parts? See all Infiniti Q50 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 | Kicker KS-Series 6×8 Coaxial Car Speakers (Pair) |  |
| Best Quality Built to a higher standard if you want something more solid | KICKER 43DSC6804 6×8" DS Series Coaxial Speaker Kit with Harness for Ford F-150 (Bundle of 4) |  |
| Best Budget The cheapest option that still gets the job done reliably | Jensen JS6804 4-Way 5×7/6×8 Car Speaker Pair |  |
| Most Sold A high-volume bestseller chosen again and again | Alphasonik AS268P 6×8-Inch 3-Way Car Speakers (2 Pairs) |  |
| Best Value for Money The sweet spot between price and what you get | JBL Club 8620 5×7/6×8 2-Way Coaxial Car Speaker Pair |  |
| Best Overall The best all-around choice for most situations | ORION Cobalt CM6854 5×7/6×8 Mid-Range Bullet Loudspeakers (Pair) |  |
1. Kenwood KFC‑C6866S 6×8 2‑Way Car Speakers (Pair)
| Impedance | 4 Ohms |
|---|---|
| Max Power | 250 Watts |
| RMS Power | 30 Watts |
| Tweeter Diameter | 1 Inches |
| Speaker Type | Coaxial |
The Kenwood KFC-C6866S is a straightforward 6×8 two-way speaker pair meant to replace stock units in vehicles like the Infiniti Q50 where 6×8 fitment is required. Each speaker combines a paper/polypropylene-style woofer for solid midbass and a 1-inch PEI balanced-dome tweeter to preserve high-frequency detail. Installation is typical of factory-replacement speakers: they mount into the factory openings with minimal modification and run on the car stereo without an external amp. Notable practical benefits include a shallow mounting depth to fit tighter speaker locations and a magnet/driver design tuned for clear midrange and vocal presence rather than heavy bass. Limitations are its modest power handling and 30W RMS rating, so it will sound best driven by the Q50s factory or modest aftermarket head unit rather than a high-power amplifier, and it is not designed for moisture resistance or deep low-frequency extension. For buyers wanting a reliable, easy swap that improves clarity over worn factory speakers, these are a solid choice; for bass-heavy systems you will want a separate subwoofer and/or a more power-capable component set.
Best for: A reliability-focused buyer who wants a straightforward, factory-style speaker replacement for the Infiniti Q50 that prioritizes consistent performance and easy installation over extreme output.
Less Ideal for: Not a good fit for listeners building a high-output or bass-first system who plan to rely on speakers alone for low-end impact rather than adding a dedicated subwoofer.
- Shallow mounting height for easier fit in tight factory locations
- Balanced-dome tweeter preserves high-frequency detail and clarity
- Paper/polypropylene woofer gives solid midbass and clear midrange
- Pair includes basic hardware for direct replacement installation
- Modest 30W RMS power handling limits headroom with high-volume playback
- Not water resistant so not suitable for exterior or high-moisture locations
Verdict A dependable, shallow-mount 6×8 pair that improves clarity and replaces worn factory speakers in the Infiniti Q50 but is limited in power and bass output.
2. Kicker KS-Series 6×8 Coaxial Car Speakers (Pair)
| Rated Impedance | 4 ohm |
|---|---|
| Tweeter size | 0.75 inch |
| Recommended amplifier power | 15-75 W |
| Frequency response | 45-21 kHz |
The Kicker KS-Series 6×8 coaxial pair replaces factory speakers with a ready-to-install upgrade that focuses on clearer highs and stronger midbass without major modifications. These speakers use internally dampened polypropylene cones, rubber surrounds, and .75" tweeters to deliver punchier low-mid response and crisp treble at concert-like volumes. They have a shallow tweeter profile so they fit many factory openings and include hardware that makes mounting straightforward. In practical use the KS-Series improves detail and imaging compared with typical OEM speakers and tolerates higher volume before sounding strained, but they are not a substitute for a separate component set or subwoofer if you want deep, room-shaking bass. Also, like most coaxials, their low-frequency extension is limited so an external amp or careful crossover tuning will help get the best performance in a Q50. Installation in the Infiniti Q50 is usually a bolt-in swap when using the correct 6×8 mounting brackets and wiring adapters.
Best for: Convenience-driven buyers who want a drop-in improvement over factory sound in their Infiniti Q50 with minimal fuss and straightforward installation.
Less Ideal for: Audiophiles seeking deepest bass or owners who plan to run a high-power, competition-level audio system without adding external amplification or a subwoofer.
- Designed for direct replacement with minimal tweeter protrusion for easier fitment in factory locations.
- Polypropylene cones and rubber surrounds for controlled midrange and resilient bass response.
- .75" tweeters deliver clear highs and improved imaging over stock speakers.
- Includes mounting hardware and spliced connectors to simplify installation.
- Limited low-frequency extension compared with separate component speakers or a subwoofer.
- Not intended to replace a dedicated amplified system for high-power applications.
Verdict A convenient, bolt-in 6×8 upgrade for the Infiniti Q50 that noticeably sharpens highs and midbass while keeping installation simple, but it will still benefit from an amp or sub for deeper low end.
3. KICKER 43DSC6804 6×8" DS Series Coaxial Speaker Kit with Harness for Ford F-150 (Bundle of 4)
| Impedance | 4 Ohms |
|---|---|
| RMS Power | 50 watts |
| Peak Power | 200 watts |
| Sensitivity | 90 dB |
| Frequency Response | 45-20,000 Hz |
These KICKER DS Series 6×8" coaxial speakers are a factory-replacement style kit that pairs polypropylene woofers with 1/2" dome tweeters to produce clearer highs and stronger mid-bass than typical stock units. The package includes two pairs of speakers plus matching harnesses to plug into a vehicle's factory connectors without cutting or splicing, making door installation straightforward for a single-vehicle swap. With a 50 watt RMS rating and 200 watt peak per pair, the speakers are tuned for higher sensitivity and a broad frequency response so they sound noticeably louder and more detailed on a factory head unit. Practical benefits include reduced installation time, improved clarity at high volumes, and durable ribbed surrounds and UV-treated cones for longevity. Limitations are that these are coaxial, not component speakers, so they will not match the separation or power handling of a dedicated component system driven by an external amp, and users seeking heavy bass augmentation will still want a subwoofer and amplifier to achieve that low-end extension.
Best for: Performance-oriented buyers looking to improve in-cabin clarity and loudness without swapping head units or adding external amplification; ideal for owners who prioritize a straightforward, high-quality speaker swap.
Less Ideal for: Audiophiles seeking top-tier soundstage separation or users planning a high-power amplified system and deep bass focus should consider component speakers and a dedicated subwoofer instead.
- Includes vehicle-compatible harnesses for plug-and-play installation with no cutting
- Polypropylene cone and acoustic-foam surrounds provide durability and cleaner mid-bass than typical stock speakers
- Half-inch dome tweeter adds clearer high-frequency detail for vocals and cymbals
- Coaxial design limits imaging and separation compared with component speaker systems
- Moderate RMS power means performance is best on a factory or modest aftermarket head unit rather than a high-power amplifier setup
Verdict A plug-and-play 6×8" upgrade that delivers clearer highs and stronger mid-bass for a performance-focused, no-fuss speaker replacement, but not a substitute for a powered component system.
4. Jensen 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 that swaps into many 6×8 or 5×7 openings and aims to improve clarity and range over factory speakers. It is typically used as an affordable upgrade for door or rear deck replacements where you want clearer mids and brighter highs without adding an amplifier. Notable features include a 30mm mylar balanced dome midrange for clearer vocals, a polypropylene injected woofer cone that resists moisture and distortion, and a 40 watt RMS rating with 160 watt peak handling for compatibility with most factory and aftermarket head units. The speakers cover roughly 70Hz to 20kHz and include a piezo tweeter for extended highs. In practice they offer noticeable improvement in detail and overall loudness at stock power levels, though bass extension is limited by the 70Hz low end and the modest sensitivity. Fit and mounting depth suit common 6×8 installs, but buyers planning heavy sub-bass or high-power amplification should expect constrained low-frequency output and consider adding an amp or subwoofer instead.
Best for: Budget-conscious buyers seeking a cost-effective, straightforward speaker upgrade to make music clearer on daily drives and improve factory sound without major electrical changes.
Less Ideal for: Audiophiles or drivers who want deep, punchy bass or who plan to drive speakers with high-power amplifiers should consider higher-end components or adding a powered subwoofer instead.
- 4-way design with dedicated midrange and tweeters improves vocal clarity and high-frequency detail
- Polypropylene woofer resists moisture and reduces cone distortion for consistent sound in damp environments
- Compatible power range (40W RMS, 160W peak) works with most factory head units and basic aftermarket amps
- Frequency response to 20kHz and mylar midrange yield clearer mids and trebles than typical stock speakers
- Low frequency limit around 70Hz means bass will be less pronounced without a subwoofer or amp
- No grille included which may require careful handling during installation
Verdict A solid, budget-friendly 6×8 replacement that sharpens mids and highs for daily driving but will need a sub or amp for strong bass.
5. Alphasonik AS268P 6×8-Inch 3-Way Car Speakers (2 Pairs)
| Speaker Type | 3-Way Speaker |
|---|---|
| Impedance | 4 Ohms |
| Sensitivity | 92dB |
| Included Components | 4x Speakers, Coaxial Cables, Mounting Screws |
| Power Handling (per speaker) | 350W Peak / 35W RMS |
The Alphasonik AS268P kit supplies two pairs of 6×8-inch 3-way coaxial speakers intended as a direct upgrade for factory car audio setups. For Infiniti Q50 owners these speakers are typically used as front or rear door replacements to improve clarity and volume over stock units without adding an external amplifier. Notable features include a 3-way driver design, claimed 350 watts peak per speaker (35 watts RMS per speaker per pair), 4 ohm impedance and 92 dB sensitivity which help them run acceptably from a factory head unit. The kit includes wiring pigtails, mounting screws and shallow mounting depth that eases installation in constrained door cavities. Practical benefits are clearer mids and more perceived loudness compared with many OEM Q50 door speakers and an affordable way to refresh a tired sound system. Limitations are that bass output is limited without a subwoofer, build quality and long-term durability are average compared with premium brands, and some installs may require adapters or minor trimming to match Infiniti Q50 mounting points and connectors.
Best for: Risk-averse mainstream buyers looking for an affordable, straightforward factory-quality speaker refresh for their Infiniti Q50 who prioritize reliable, noticeable improvement without complex upgrades.
Less Ideal for: Audiophiles seeking deep bass or high-end fidelity and installers who want a plug-and-play perfect fit without any adapter or trimming work should consider higher-tier or vehicle-specific options instead.
- Includes two pairs with mounting hardware and pigtails so you can replace front and rear speakers in one purchase
- 3-way coaxial design improves vocal clarity and high frequency detail over typical factory Q50 speakers
- 92 dB sensitivity and 4 ohm impedance let them play relatively loud from a factory head unit without an amp
- Limited low-frequency output so a subwoofer is recommended for deep bass
- Materials and long-term durability are middling compared with higher-end aftermarket speakers
- May require speaker adapters or small trim adjustments to fit Infiniti Q50 mounting and connector layouts exactly
Verdict A budget-friendly 6×8 3-way kit that noticeably improves Q50 door-speaker clarity and loudness but needs a sub or amp for strong bass.
6. JBL Club 8620 5×7/6×8 2-Way Coaxial Car Speaker Pair
| Speaker Type | 2-way coaxial |
|---|---|
| Power (RMS) | 55 watts each |
| Impedance | 3 Ohms |
| Frequency Response | 65 Hz – 20 kHz |
| Tweeter | Edge-driven PEI dome |
The JBL Club 8620 is a two-way coaxial speaker pair that replaces common 5×7 or 6×8 factory door or rear speakers and is intended as a budget-friendly audio upgrade for cars like the Infiniti Q50. Each speaker offers a balanced PEI dome tweeter and polypropylene woofer with a 55 watt RMS (165 watt peak each) rating and 3 ohm impedance, which helps produce clear highs and surprisingly solid mid-bass when driven by a factory head unit or small amp. Included crossovers keep the tweeter protected and the sensitivity rating supports decent output without huge power. In practice these fit many Q50 6×8 openings with the supplied brackets, and installers report easy top-mount installation. Expect good value: noticeably better clarity and punch than most stock speakers, but you will likely need extra speaker wire and possibly adapter screws to complete the job. Also, the speakers are not a high-end audiophile upgrade and will benefit from an external amplifier and proper door sealing for maximum bass response.
Best for: A practical optimizer looking for a cost-effective, noticeable upgrade over the Q50s factory speakers without moving to a full amplifier and component overhaul.
Less Ideal for: Owners seeking high-end, audiophile-level fidelity or those unwilling to add sealing, wiring, or a modest amplifier to get the best bass and clarity.
- Designed to fit 5×7 or 6×8 factory openings common in vehicles like the Infiniti Q50
- Balanced PEI dome tweeter plus polypropylene woofer for clear highs and solid midrange
- Includes passive crossovers to protect the tweeter and improve frequency separation
- Good sensitivity that yields strong output from a factory head unit
- No speaker wire or mounting screws included so expect to supply small accessories
- 3 ohm impedance may draw more current than higher-impedance replacements, which can tax weak factory head units
Verdict A budget-friendly 6×8 upgrade for the Infiniti Q50 that delivers clearer highs and punchier mid-bass but may need extra wiring or an amp to reach its full potential.
7. ORION Cobalt CM6854 5×7/6×8 Mid-Range Bullet Loudspeakers (Pair)
| Power (RMS) | 250W |
|---|---|
| Power (Max) | 1000W |
| Impedance | 4 Ohms |
| Sensitivity | 92 dB |
| Voice Coil | 1.5" High-temperature |
The CM6854 is a pair of mid-range bullet loudspeakers built for car audio upgrades where punchy mids and clear highs matter. They are typically used as direct replacements in factory speaker locations or as part of a system with an external amplifier; the 250W RMS (1,000W peak) rating and 92 dB efficiency mean they play loud without needing extreme power. Notable features include a 1.5-inch high-temperature voice coil and a bullet tweeter that extends high-frequency response while preserving midrange presence. In practice these speakers add clarity and staging to vocals and guitars and can fill the cabin at high volume with low distortion when paired with proper mounting and tuning. Important limitations are the large magnet assembly and relatively shallow mounting depth that may require adapter rings or changes to factory mounts for a perfect fit in some vehicles, and they are not waterproof so they are best used in protected interior locations. Expect excellent volume and midrange clarity but plan for potential fitment work during installation.
Best for: Balanced buyers who want a noticeable, all-around midrange and high-frequency upgrade that improves clarity and loudness without committing to a full custom system.
Less Ideal for: Audiophiles seeking the most refined studio-like accuracy or owners who need fully weatherproof speakers for exposed locations should consider other options.
- High power handling (250W RMS / 1000W max) for loud, dynamic sound
- High sensitivity (92 dB) that performs well with factory head units or moderate amplification
- Bullet tweeter design improves high-frequency clarity without overly brightening mids
- Shallow mounting depth for easier installation behind some factory grilles
- Large magnet can cause fitment issues in cramped door cavities
- Not rated waterproof so unsuitable for exposed exterior mounting
Verdict If you want louder, clearer mids and highs in your Q50 with minimal system upgrades, the CM6854 delivers strong performance but watch for fitment and outdoor exposure limitations.
Choosing the Right Infiniti Q50 6X8 Speakers: Key Factors to Consider
Power Handling and Amplifier Matching
Power handling indicates how much continuous and peak power a speaker can tolerate without damage. Matching speaker RMS ratings to the output of your head unit or amplifier prevents distortion and reduces the chance of thermal damage.
If you plan to add an external amplifier, choose speakers with higher RMS ratings and stable impedance to take advantage of cleaner, stronger output. For use with the factory head unit, prioritize speakers with moderate power handling and higher sensitivity to get adequate volume without extra amplification.
Sensitivity and Real-World Loudness
Sensitivity measures how efficiently a speaker converts amplifier power into volume, usually expressed in dB. A higher sensitivity speaker will sound louder than a low-sensitivity model at the same input level, which matters if you are not adding an amplifier.
When replacing factory speakers in the Infiniti Q50, look for sensitivity ratings that balance loudness with tonal control. Very high sensitivity can help with head-unit-only systems, while lower sensitivity paired with an amp often yields better control and cleaner sound at high volumes.
Frequency Response and Tonal Balance
The frequency response range indicates how low and high a speaker can reproduce sound, affecting bass weight and treble detail. A wider, flatter response generally produces more accurate music reproduction and better vocal clarity.
For door-mounted 6×8 speakers, pay attention to low-frequency extension and midrange clarity. Since doors are not ideal sealed enclosures, aim for speakers that maintain midbass presence without overwhelming midrange frequencies, so vocals remain clear and instruments retain separation.
Mounting Depth and Physical Fit
Mounting depth and overall dimensions determine whether a speaker will fit the factory door location without modification. Insufficient clearance can lead to rubbing against the window mechanism or require adapter plates.
Measure the Infiniti Q50 door cavity depth and compare it to the speaker's mounting depth and cutout dimensions. Also consider bezel or grille profile to ensure the speaker sits flush with the door panel and that mounting screws align with factory holes when possible.
Driver Construction and Durability
Materials used for cones, surrounds, and tweeters affect sound character and longevity. Stiffer cones can improve transient response and clarity, while durable surrounds resist fatigue from temperature changes and repeated use.
Look for corrosion-resistant terminals and coatings if your vehicle is exposed to humidity or extreme temperatures. Robust materials and good build quality reduce the chance of mechanical failure and help maintain consistent sound over time.
Crossover Design and Tweeter Integration
For coaxial and component solutions, the crossover or integration of the tweeter affects tonal balance and imaging. A well-designed crossover ensures smooth transitions between tweeter and midrange, reducing harshness and improving staging.
Component setups offer more placement flexibility and typically better imaging, while coaxial speakers simplify installation. Consider whether the crossover is passive and pre-wired or adjustable, and how the tweeter mounting will affect your Infiniti Q50 door installation and sound staging.
FAQ
Will 6×8 speakers fit in an Infiniti Q50 door?
Many 6×8 speakers are designed to fit in common door locations, but fit depends on mounting depth and cutout dimensions. Check the speaker's mounting depth and cutout diameter against your Infiniti Q50 door cavity. If clearance is tight, adapter plates or shallow-depth models are usually available to simplify installation.
Do I need an amplifier for 6×8 speaker upgrades?
An amplifier is not always required but it often improves clarity and dynamic range. If your replacement speakers have higher power handling and lower sensitivity than the factory units, an amplifier will drive them more cleanly. For head-unit-only setups, choose higher-sensitivity speakers to maintain usable volume.
Are coaxial or component 6×8 speakers better for the Q50?
Coaxial speakers combine tweeter and midrange in one unit and simplify installation, while component systems separate drivers for improved imaging and control. The best choice depends on how much installation complexity you want and whether you prioritize soundstage precision over ease of fit. Both can yield meaningful improvements when matched to the vehicle's acoustics.
How important is mounting depth when selecting 6×8 speakers?
Mounting depth is critical because inadequate clearance can cause fitment issues or contact with internal door components. Compare the speaker's specified depth to the available space in the Infiniti Q50 door. If space is limited, look for shallow-mount designs to avoid trimming or modifying the door.
Can I reuse the factory wiring when installing aftermarket 6×8 speakers?
Factory wiring can often be reused, but its condition and connectors vary. Ensure the wiring and connectors are intact and can handle the speaker's power. In some cases, crimp adapters or new wiring runs are recommended to maintain a reliable, low-resistance connection.
Will new 6×8 speakers change the bass in my car?
Yes, new speakers can change perceived bass by providing better midbass extension and control. Door-mounted 6×8 speakers are not a substitute for a subwoofer, but higher-quality drivers can tighten bass response and improve punch. Proper installation and enclosure sealing in the door also influence low-frequency performance.
How We Chose the Best Infiniti Q50 6X8 Speakers
We focused on speakers that fit the Infiniti Q50's door mounting and electrical constraints while delivering measurable audio improvements. Our selection criteria prioritized power handling that matches common aftermarket amplifiers, sensitivity ratings for efficient volume, and frequency response that preserves vocal clarity and bass extension. We also considered mounting depth and grille fit to ensure straightforward installation without major door modifications, along with build quality indicators such as cone materials and crossover design for coaxial or component options.We excluded any speakers lacking specified 6×8 dimensions or those with unclear installation requirements. Low-quality, unbranded units and products intended for marine or outdoor use were also omitted. The final list balances performance, installation practicality, and durability to suit typical Infiniti Q50 owners seeking a clear upgrade path.
Our full evaluation process is outlined in our review methodology.
Conclusion
When upgrading Infiniti Q50 6×8 speakers, prioritize the factors that match your goals: power handling and sensitivity for compatibility with your head unit or amplifier, frequency response for vocal clarity, and mounting depth for hassle-free installation. Consider driver materials and crossover design if you value longevity and refined imaging.Balancing these tradeoffs helps you choose a 6×8 speaker that fits physically and performs musically. Focus on realistic improvements you can install cleanly in the door and pair the speakers with appropriate amplification or tuning for the best results.
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