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Upgrading the sound in a Subaru Crosstrek often comes down to choosing the right 6×8 speakers for the vehicle rather than picking the loudest option. You want speakers that fit the Crosstrek's door openings, handle the output of your head unit or amplifier, and deliver balanced sound across highs and lows. This guide covers our shortlisted top picks for Subaru Crosstrek 6×8 speakers and explains the features that matter most. Below you will find the top selections, plus explanations of key specs and installation considerations to help you pick the best option for your driving and listening habits.
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Top Picks at a Glance
| Best Reviewed A top-rated pick with lots of positive feedback | Kenwood KFC‑C6866S 6×8 2‑Way Car Stereo Speakers (Pair) |  |
| Most Popular A crowd favorite that many people choose with confidence | CERWIN-VEGA V68 6×8 Coaxial Car Speaker (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 (4-Pack) |  |
| Best Budget The cheapest option that still gets the job done reliably | Hifonics ZS5768CX 5×7/6×8 Coaxial Car Speakers (Pair, 4 Ohms) |  |
| 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 | Kicker KS-Series 6×8 Coaxial Car Speakers (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 Stereo Speakers (Pair)
| Speaker Type | Coaxial |
|---|---|
| Impedance | 4 Ohms |
| Max Power | 250 watts |
| Tweeter Diameter | 1 Inches |
| Speaker Size | 8 Inches |
These Kenwood KFC-C6866S 6×8 two-way speakers are sold as a direct replacement-style pair for vehicles that accept 6×8 door or rear speakers. They combine a 6×8 paper cone woofer for punchy midbass with a 1-inch PEI balanced-dome tweeter to improve clarity in the high range. Typical installation is straightforward in vehicles with standard 6×8 openings and uses the supplied screws and speaker cord. The enlarged magnet and sound field enhancer aim to tighten midrange response and improve imaging compared with many factory units, making them a good reliability-focused upgrade for daily driving. They are not marketed as bass-heavy or subwoofer replacements, so listeners seeking deep low-frequency extension will need an amplifier and subwoofer. Also the package does not include vehicle-specific mounting adapters or harnesses, so some Crosstrek owners may need adapters or minor wiring work for a clean, plug-and-play install.
Best for: A reliability-focused Crosstrek owner who wants a straightforward, factory-style speaker upgrade that improves clarity and midrange on a daily-driver without chasing extreme volume or bass.
Less Ideal for: Buyers seeking deep bass or a high-power competition setup for their Crosstrek should consider adding an amplifier and subwoofer or choosing component speakers instead.
- Designed as drop-in 6×8 replacement for common car speaker locations
- 1-inch PEI tweeter improves vocal and high-frequency clarity
- Polypropylene/paper cone and enlarged magnet for stronger midbass compared with stock
- Includes mounting screws and speaker cord for basic installation
- No vehicle-specific mounting adapters or harnesses included which may be needed for some installs
- Not intended to deliver deep sub-bass without an external amp and subwoofer
Verdict A dependable, clarity-focused 6×8 replacement that improves midrange and highs for Subaru Crosstrek owners who prioritize reliable, everyday sound over heavy bass.
2. CERWIN-VEGA V68 6×8 Coaxial Car Speaker (Pair)
| Power (RMS/Max) | 100W RMS / 300W Max |
|---|---|
| Frequency Response | 88Hz-20KHz |
| Sensitivity | 87 dB |
| Impedance | 4 Ohms |
The Cerwin-Vega V68 is a 6×8 two-way coaxial speaker pair intended as a direct replacement for factory 6×8 installations. It uses a hybrid carbon fiber/polypropylene cone and Santoprene surround for stronger bass excursion while a dynamically balanced 3/4-inch silk dome tweeter delivers cleaner highs; an internal crossover includes tweeter protection to reduce distortion at higher volumes. In practice these speakers are easy to use as a drop-in upgrade and are forgiving with stock head units thanks to their high sensitivity, so you may not need an external amplifier for better volume and clarity. The stamped steel basket and ferrite woofer magnet help control unwanted vibration and give the speakers a solid, durable feel for outdoor and vehicle use. Expect noticeably fuller midbass and clearer highs compared with typical factory speakers, but the tweeter can sound forward on some source units and benefits from EQ or a DSP. Mounting depth and cutout shape should be checked against Crosstrek door openings before purchase.
Best for: Buyers who prioritize a convenient, noticeable audio upgrade without adding an external amplifier and want a simple drop-in replacement to improve everyday listening.
Less Ideal for: Users who demand reference-level accuracy or who prefer component speaker systems with separate woofers and tweeters for precise staging should look at component options instead.
- High sensitivity yields louder output from stock head units without an amp
- Hybrid carbon fiber/polypropylene cone and Santoprene surround for improved bass response and durability
- Integrated crossover with tweeter protection reduces distortion at high volume
- Stamped steel basket and ferrite magnet help minimize vibrations for cleaner sound
- Tweeter can be forward or sharp on some factory head units without EQ
- Mounting depth and non-standard cutout may require adapter or modification for some installations
Verdict A convenient, high-sensitivity 6×8 coaxial upgrade that delivers stronger bass and clearer highs for daily driving but may need EQ for the brightest tweeter tones.
3. Kicker 43DSC6804 6×8" DS Series Coaxial Speaker Kit with Harness for Ford F-150 (4-Pack)
| Peak power | 200 watts |
|---|---|
| RMS power | 50 watts |
| Impedance | 4 Ohms |
| Sensitivity | 90 dB |
| Frequency response | 45–20,000 Hz |
These Kicker 6×8 DS Series speakers are a plug-and-play upgrade that replaces factory door speakers and includes harnesses to avoid cutting or splicing. They use polypropylene cones, ribbed surrounds and a 1/2" dome tweeter to extend highs while the 2-way coaxial design and 90 dB sensitivity boost output on low-power factory stereos. In practice you get clearer mids and crisper highs with noticeably more volume headroom than stock speakers, which makes them useful for daily driving and spirited listening without adding an amp. Installation is straightforward with the included adapter harnesses, though a few owners report swapped polarity on some vehicle harnesses so double-check wiring during fitment. These are tuned as a high-sensitivity, factory-replacement style speaker set rather than an audiophile top-end or amp-driven component system, so they deliver strong value and real-world improvement but are not the choice if you plan a high-power aftermarket stereo with dedicated crossovers and subs.
Best for: Performance-oriented buyers looking for a straightforward, factory-replacement upgrade that raises volume and clarity on a stock vehicle stereo without adding an amplifier.
Less Ideal for: Audiophiles building a high-power aftermarket system or buyers who plan to pair speakers with an external amplifier and separate component tweeters should consider higher-end component speakers instead.
- Includes vehicle-specific harnesses for plug-and-play installation with no cutting required
- High sensitivity (90 dB) provides louder output on factory head units without adding an amp
- Coaxial 2-way design with 1/2" dome tweeter improves clarity and high-frequency detail
- Polypropylene cone and ribbed surround offer durable, road-friendly performance
- Designed and marketed specifically for Ford F-150 1999–2014 fitment so vehicle-specific harness layout may not match other models
- Not optimized for high-power, amp-driven systems or dedicated component upgrades
Verdict A high-sensitivity, plug-and-play 6×8 speaker bundle that noticeably improves factory sound and volume but is not aimed at amp-driven high-end systems.
4. Hifonics ZS5768CX 5×7/6×8 Coaxial Car Speakers (Pair, 4 Ohms)
| Impedance | 4 Ohms |
|---|---|
| RMS Power Handling (CEA426B) | 90 W |
| Max Power | 250 W |
| Frequency Response +/-3dB | 46 Hz – 20 kHz |
| Sensitivity | 88 dB |
The Hifonics ZS5768CX coaxial speakers are a value-oriented replacement designed to fit common 6×8 openings and lift in-car sound without adding an amplifier. They pair a 6 inch midbass cone with a 1 inch Neo-Mylar soft-dome tweeter and a passive Butterworth crossover to deliver clearer highs and stronger midbass than most factory Crosstrek speakers. Typical use is direct swap into factory locations of a Subaru Crosstrek where space and grille clearances match 6×8 units. Notable features include rubber surrounds for moisture resistance, a stamped steel anti-resonant basket for stable mounting, Kapton voice coil formers for heat management, and spade connectors for simple wiring. In practice these speakers provide louder, more detailed sound from the factory head unit and are relatively easy to install. Limitations are modest sensitivity and power handling compared with aftermarket component systems so extreme loudness or deep low bass will be limited without an amp and a dedicated subwoofer. Also grills are not included which may matter if your installation requires them.
Best for: Budget-conscious Crosstrek owners who want a straightforward, affordable upgrade from factory speakers to improve clarity and midbass without adding an amplifier.
Less Ideal for: Audiophiles seeking deep bass, high output, or component-level separation should consider a powered system with separate woofers and tweeters instead.
- Designed to fit 5×7 or 6×8 factory openings for straightforward swap in many vehicles
- Neo-Mylar soft-dome tweeter and passive crossover improve midrange clarity and high-frequency detail
- Rubber surround and anti-resonant stamped steel basket increase durability and reduce unwanted noise
- Capable of louder output than many stock speakers when driven by a factory head unit
- Sensitivity (88 dB) and CEA RMS (90 W) limit clean output at very high volumes without an external amplifier
- No speaker grills included which may require reuse of factory grilles or additional parts
Verdict A cost-effective, easy-to-install 6×8 replacement that noticeably improves Crosstrek sound over stock speakers but may need an amp for high-volume, bass-heavy listening.
5. Alphasonik AS268P 6×8-inch 3-Way Car Speakers (2 Pairs)
| Speaker Type | 3-Way Speaker |
|---|---|
| Impedance | 4 Ohms |
| Sensitivity | 92dB |
| Frequency Response | 28 – 22,000 Hz |
| Included Components | 4x Speakers, Coaxial Cables, Mounting Screws |
The Alphasonik AS268P ships as two pairs of 6×8-inch, 3-way coaxial speakers intended as a direct upgrade over many factory door units. In typical use they replace factory front or rear speakers in a vehicle and are powered by the factory head unit or a modest amplifier. Notable features include a claimed 350 watt peak handling per speaker (35 watts RMS each), a 28–22,000 Hz frequency range, 92 dB sensitivity and 4 ohm impedance. In practice these specs mean you can expect clearer vocals and brighter highs compared with many low-end stock speakers, and they play reasonably loud from deck power. The kit includes mounting hardware and pigtail leads to simplify installation. Limitations are typical of budget speakers: modest true power handling, limited low-bass output without a subwoofer, and variable fitment that may require adapters or minor mounting adjustments for some vehicles. For a risk-averse buyer wanting an affordable, straightforward sound upgrade for their Crosstrek, these deliver noticeable improvement over factory units but will not replace a dedicated component system or provide deep bass on their own.
Best for: Risk-averse mainstream buyers who want a low-cost, easy upgrade to improve clarity and volume without changing the factory stereo or installing a separate amplifier.
Less Ideal for: Audiophiles seeking deep bass or high-power handling and installers who want a full component system with separate crossovers and tweeters.
- Includes two pairs plus mounting hardware and pigtail leads for easier installation
- 3-way coaxial design improves vocal clarity and high-frequency detail over typical stock speakers
- High listed sensitivity (92 dB) allows reasonable volume from a factory head unit
- Fits common 6×8 mounting locations with shallow mounting depth for confined door spaces
- Low true RMS power means limited clean bass without adding a subwoofer or amplifier
- Not water resistant so moisture-prone door locations may reduce longevity
- Fitment may require adapters or slight reorientation in some vehicles
Verdict A budget-friendly, plug-in upgrade that noticeably sharpens vocals and highs for Subaru Crosstrek owners but needs a sub or amp for stronger bass.
6. Kicker KS-Series 6×8 Coaxial Car Speakers (Pair)
| Tweeter size | .75 inch |
|---|---|
| Impedance | 4 Ohm |
| Speaker design | 2-way coaxial |
| Recommended amp power | 15-75 W |
These Kicker KS-Series 6×8 coaxial speakers are built to replace factory units and give a noticeable step-up in clarity and punch. They pair a high-performance woofer with a .75" tweeter and redesigned cones, voice coils, and crossovers so you get stronger midbass and defined highs without adding separate component tweeters. Typical use is a direct door or rear deck replacement in vehicles that accept 6×8 speakers; installation is straightforward using the included wiring and mounting brackets. Practical benefits include better dynamic range at concert-level volumes and minimal tweeter protrusion for easier fitment into OEM openings. They respond well to head units or modest amplifiers and handle EQ adjustments cleanly, though pushing extreme low bass without a subwoofer will reach their limits. If you need deep, subwoofer-level bass or plan to drive them with very high power continuously, you will want to pair them with proper crossovers or a dedicated amp configuration. These speakers strike a balanced upgrade for drivers who want clear, louder sound without complex installation or heavy modification.
Best for: A practical optimizer focused on getting the most sound quality per dollar who wants a straightforward factory-style upgrade for everyday driving and occasional loud listening.
Less Ideal for: Listeners seeking deep sub-bass or owners planning extensive, high-power aftermarket systems should look at dedicated woofers and component speaker packages instead.
- Redesigned cones, voice coils, and crossovers for clearer mids and highs
- Minimal tweeter protrusion simplifies drop-in fitment into factory openings
- Handles high volume with low distortion for a noticeable sound upgrade
- Includes multiple mounting brackets and wiring for easier installation
- Not a substitute for a subwoofer for deep bass extension
- Requires correct amplifier/crossover setup to avoid sending very low frequencies to the speakers
Verdict Great, easy-to-install 6×8 speakers that deliver a substantial factory-style audio upgrade for Crosstrek owners who value sound quality and practicality.
7. ORION Cobalt CM6854 5×7/6×8 Mid-Range Bullet Loudspeakers (Pair)
| Impedance | 4 Ohms |
|---|---|
| Power RMS | 250W |
| Power Max | 1000W |
| Sensitivity | 92 dB |
| Voice Coil | 1.5" high-temperature |
The ORION Cobalt CM6854 midrange pair brings a punchy, high-output upgrade for a Crosstrek’s factory audio, engineered to reproduce vocals and midrange detail without breaking up at high volumes. These speakers are typically used as direct replacements in 6×8 or 5×7 openings or installed with an adapter into doors or rear decks; they pair well with a modest external amp or a higher-output factory head unit thanks to 250W RMS handling and a 1.5" high-temperature voice coil. Notable features include a bullet tweeter to extend highs while preserving mid clarity, a reported 92 dB sensitivity for efficiency, and a shallow mounting depth that helps fit tighter Subaru door cavities. In practice they deliver clear, loud mids and defined presence for rock, pop, and vocal-heavy tracks, and customers frequently note strong performance even without heavy equalization. Pay attention to physical fit and the large magnet assembly since some Crosstreks may require a spacer, adapter, or modified mounting hardware; also these are focused on mid/high output rather than deep bass so you will still want a dedicated woofer or sub for low-end punch.
Best for: Balanced all-round Crosstrek owners who want a clear, louder midrange upgrade that improves vocals and instrument definition without committing to an expensive full-system overhaul.
Less Ideal for: Buyers seeking deep bass from a single speaker or a plug-and-play fit without checking clearance should consider a dedicated woofer or a different speaker sized explicitly for their factory openings.
- High power handling (250W RMS, 1000W max) supports louder, distortion-resistant playback
- 92 dB sensitivity makes the speakers efficient with factory head units or small amps
- Bullet tweeter design preserves high-frequency detail while maintaining strong mids
- Shallow mounting depth improves compatibility with tighter door or deck locations
- Large magnet assembly can interfere with stock mounting holes and may require adapters or spacers
- Focused on mid/high performance and does not provide substantial low bass on its own
Verdict A loud, efficient midrange upgrade that sharpens vocals and mids for Subaru Crosstrek owners willing to verify fitment and add bass elsewhere if needed.
Choosing the Right Subaru Crosstrek 6X8 Speakers: Key Factors to Consider
Fit and Mounting Depth
Accurate fitment is critical because door cavity depth and mounting bolt patterns vary. Measure the available depth behind the speaker opening in the Crosstrek before selecting a 6×8 speaker to ensure the magnet and basket do not interfere with window mechanisms or wiring.
Also check the speaker frame shape and bolt hole spacing. Some 6×8 speakers use oval frames or require an adapter plate to match factory mounting points. Considering fit prevents the need for trimming or custom brackets and reduces installation time and risk of damage.
Power Handling and Sensitivity
RMS power handling indicates how much continuous power a speaker can take, which matters when pairing with a head unit or amplifier. Choose speakers with RMS ratings that align with your amplifier's output to avoid distortion or thermal stress.
Sensitivity describes how efficiently a speaker converts power into loudness. Higher sensitivity models require less power to achieve the same volume, which can be beneficial if you keep the factory head unit. Balancing power handling and sensitivity helps ensure clean, reliable performance.
Frequency Response and Tonal Balance
Look at the speaker's frequency range to understand how it reproduces bass, midrange, and treble. A wider, flatter response typically yields more accurate sound, while pronounced peaks or dips can color vocals or instruments.
Consider your listening habits: emphasis on full-range music or bass-heavy genres may influence whether you prioritize extended low-frequency output or clearer midrange detail. Matching the speaker's tonal balance to your preferences will reduce the need for corrective equalization.
Speaker Type: Coaxial Vs Component
Coaxial 6×8 speakers combine tweeters and mid/bass drivers in one unit for space efficiency and simpler wiring. They are often the easiest direct replacement in door locations and provide a straightforward improvement over factory speakers.
Component setups separate tweeters from the woofer, offering better imaging and clearer highs at the cost of extra installation complexity. If you care about soundstage and have room or mounting options for separate tweeters in the cabin, components can deliver more refined results.
Build Materials and Durability
Speaker cone, surround, and basket materials affect sound character and longevity. Treated paper, polypropylene, and mineral-filled cones each have different responses and durability profiles. Surround materials such as rubber tend to resist deterioration better than foam in humid or hot environments.
Pay attention to crossover construction and connector quality as well. Sturdier parts and corrosion-resistant terminals contribute to long-term reliability, which is particularly relevant for vehicles exposed to seasonal weather and fluctuating temperatures.
Installation and Wiring Compatibility
Consider whether the speaker includes mounting hardware, wiring adapters, or a plug-and-play harness for the Subaru Crosstrek. Having compatible mounting screws and connector types reduces modification needs and simplifies installation.
Think about whether you will add an amplifier or retain the factory head unit. Some speakers benefit from a simple plug-and-play swap, while higher-performance options may require crossovers mounted in a door pocket or an inline wiring adapter. Plan for wiring space and accessibility during selection.
FAQ
Will 6×8 speakers fit in my Subaru Crosstrek doors without modification?
Many 6×8 speakers are designed to fit common door openings, but fit depends on mounting depth and bolt pattern. Check the measured depth and frame dimensions of your Crosstrek's speaker location and compare them to the replacement speaker specifications. If a speaker's frame or magnet is too large, you may need an adapter plate or a shallow-mount model.
Do I need an amplifier to power aftermarket 6×8 speakers?
It depends on the speakers' power handling and your desired volume and clarity. High-power 6×8 speakers or models with lower sensitivity often benefit from an external amplifier to reach clean output without distortion. If you have a factory head unit with modest power, choose speakers with higher sensitivity or moderate RMS ratings for better results.
Are coaxial 6×8 speakers a good upgrade over factory units?
Coaxial speakers are a common, straightforward upgrade because they combine tweeters and woofers in a single assembly, simplifying installation in door locations. They typically offer noticeably better clarity and detail than worn or basic factory speakers, especially when matched for fit and power handling.
Can I install component 6×8 speakers in a Crosstrek door?
You can install component systems, but they often require additional space or separate mounting locations for tweeters and crossovers. Evaluate possible tweeter placements in the dash or sail panels and ensure crossovers can be secured inside the door or behind trim. Component setups can improve imaging but add installation complexity.
How should I match speaker impedance with my vehicle audio system?
Most car audio systems use 4-ohm speakers, but values can vary. Match the replacement speaker impedance to the vehicle's wiring and amplifier specifications to avoid overloading the head unit or amp. If in doubt, consult the head unit or amplifier documentation to confirm compatible impedance ranges.
What maintenance helps extend the life of car door speakers?
Keep door seals and weatherstripping in good condition to limit moisture exposure. Avoid playing music at extreme volumes for prolonged periods, which can overheat voice coils. Periodically check speaker mounting screws and wiring connections for corrosion or loosening to ensure consistent performance.
How We Chose the Best Subaru Crosstrek 6X8 Speakers
We focused on options that combine vehicle-specific fitment with dependable performance for the Subaru Crosstrek. Key evaluation criteria included mounting depth and frame shape to ensure proper fit in Crosstrek door locations, RMS power handling to match common head units and aftermarket amplifiers, and frequency response to assess tonal balance across bass, mids, and treble. We also considered material durability for cones and surrounds to handle cabin humidity and temperature changes, voice-coil design for thermal reliability under sustained output, and mounting hardware or adapter availability to simplify installation in Crosstrek doors. Ease of installation, including whether the speaker requires a spacer or adapter, was prioritized. We excluded speakers that do not meet standard 6×8 dimensional profiles or that have unclear fitment guidance for the Crosstrek. Products lacking documented power ratings or key specifications were also filtered out. The result is a focused list of compatible, well-specified 6×8 speakers suited to the vehicle and common audio upgrades.
Our full evaluation process is outlined in our review methodology.
Conclusion
When choosing Subaru Crosstrek 6×8 speakers, prioritize fit and power compatibility first, then weigh tonal balance and build quality against your listening priorities. Decide whether the simplicity of coaxial units or the refined imaging of component setups better matches your goals, and plan installation needs accordingly. Balancing mounting depth, RMS ratings, and sensitivity will help you select speakers that perform reliably in the vehicle. Focus on durable materials and proper wiring to ensure consistent sound and longevity in real-world driving conditions.
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