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Upgrading the speaker openings in your Subaru Impreza can make a noticeable difference in clarity, bass response, and overall driving enjoyment. Choosing the right 6×8 option matters because variations in mounting depth, power handling, and cone design affect how the speaker performs in the tight door spaces of the Impreza.This guide covers our shortlisted top picks for 6×8 speakers that fit the Subaru Impreza, and it explains the evaluation criteria used to assess sound quality, installation compatibility, and durability. Read on for practical guidance to help you pick the right fit for your priorities.
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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 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-inch 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) |  |
| Most Sold A high-volume bestseller chosen again and again | Alphasonik AS268P 6×8 3-Way Coaxial 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)
| Speaker Type | Coaxial |
|---|---|
| Impedance | 4 Ohms |
| Tweeter Diameter | 1 Inches |
| Power | 250 watts max; 30 watts RMS |
The Kenwood KFC‑C6866S are 6×8 two-way coaxial speakers intended as direct replacements for factory door speakers in compatible cars like the Subaru Impreza. They pair a polypropylene/paper cone woofer with a 1-inch PEI balanced-dome tweeter to improve midrange punch and high-end clarity compared with many stock speakers. Installation is straightforward for standard 6×8 openings and the shallow mounting height helps them fit behind factory panels without extensive modification. These speakers are rated to handle up to 250 watts peak (30 watts RMS), so they perform well with factory radios and modest aftermarket head units but may benefit from an amp for louder, cleaner output. Users report easy installs and a noticeable improvement in clarity, though they are not designed for deep bass emphasis. If you want a reliable, factory-quality replacement that restores detail and is easy to fit in a Subaru Impreza, these are a sensible choice; expect solid day-to-day performance but limited low-frequency extension without amplification or a dedicated subwoofer.
Best for: Reliability-focused buyers who want a straightforward, factory-quality 6×8 replacement that improves clarity and midrange in everyday driving without fuss.
Less Ideal for: Listeners seeking deep bass or high-output systems who plan to drive speakers at loud volumes without an external amplifier should look at component setups or adding a subwoofer instead.
- Balanced-dome tweeter improves high-frequency detail
- Polypropylene/paper woofer provides stronger midbass than many stock speakers
- Shallow mounting height for easier fit behind factory door panels
- Suitable power handling for factory radios and modest aftermarket head units
- Limited low-end bass response without an amplifier or subwoofer
- Includes basic mounting hardware but may require vehicle-specific adapters or wiring connectors
Verdict A dependable, easy-to-install 6×8 replacement that upgrades clarity and midbass for the Subaru Impreza but is not a substitute for a powered low-frequency system.
2. Kicker KS-Series 6×8 Coaxial Car Speakers (Pair)
| Tweeter size | 0.75" |
|---|---|
| Impedance | 4 Ohm |
| Speaker design | 2-way coaxial |
| Manufacturer | Kicker |
These Kicker KS-Series 6×8 coaxial speakers replace factory door speakers to deliver clearer highs and stronger mid-bass without major installation work. Designed as a drop-in-style coaxial, they use internally dampened polypropylene woofers and rubber surrounds to tighten midrange detail and reduce distortion at louder listening levels. The 0.75" tweeters provide crisp high end while minimal tweeter protrusion helps them fit into many factory mounting locations without trimming. Owners typically install them in the front or rear speaker positions and run them from a factory radio or a modest aftermarket amp; they respond noticeably to EQ adjustments and can reveal improvements across frequency bands. Practical benefits include easier bolt-in fitment for common vehicles, durable surrounds for everyday use, and a sound upgrade that scales with modest power. Limitations are that they are coaxials rather than separate component sets so imaging and ultra-low-bass extension are constrained, and they still benefit from an amplifier for maximum clean output at high volume.
Best for: Convenience-driven buyers who want a straightforward, noticeable upgrade over factory speakers with minimal installation hassle and reliable day-to-day performance.
Less Ideal for: Audiophiles seeking separated component imaging or drivers who need significant sub-bass from door speakers should look at component systems and add a subwoofer instead.
- Drop-in coaxial design minimizes modification for many factory speaker locations.
- Polypropylene cone with rubber surround improves midrange clarity and durability.
- Minimal tweeter protrusion helps fit into tight factory grilles and mounting pockets.
- Handles increased power without early distortion when paired with appropriate amp settings.
- Coaxial layout limits stereo imaging compared with component speaker systems.
- Not tuned for deep low-bass reproduction without an added subwoofer.
Verdict A practical, easy-to-install 6×8 coaxial upgrade that noticeably improves clarity and mid-bass for drivers who prioritize convenience over component-level staging.
3. KICKER 43DSC6804 6×8-inch DS Series Coaxial Speaker Kit with Harness for Ford F-150 (4-pack)
| Speaker Type | Coaxial |
|---|---|
| Impedance | 4 Ohms |
| Sensitivity | 90dB |
| RMS Power | 50 watts |
| Frequency Response | 45-20,000 Hz |
These KICKER 6×8 DS Series speakers are a ready-to-install coaxial upgrade that pairs polypropylene woofers with 1/2-inch dome tweeters to deliver clearer highs and stronger mid-bass than typical factory units. The bundle includes two pairs of speakers plus harnesses designed to plug into a vehicle's factory connectors for a fast swap without cutting. In use they provide noticeably higher sensitivity and output compared with stock speakers, so they cleanly reproduce vocals and rock/hip-hop tracks at both low and high volumes on a factory head unit. The tweeters are low-profile to avoid interference with door panels and the ribbed surrounds and UV-treated cones help durability. Limitations: these are coaxial, not component speakers, so imaging and ultra-detailed high-end will not match higher-end separate tweeter systems, and they are not designed as part of a high-power amplified system where a more robust speaker would be preferable. Also the bundle is marketed for a Ford fit and includes harnesses sized for that application, so verify fit and connector compatibility before purchase for other vehicles.
Best for: Performance-oriented buyers who prioritize clearer, louder sound from a simple speaker swap and value a quick, install-friendly upgrade over sourcing separate components.
Less Ideal for: Audiophiles building a component front stage or owners planning a high-power amp and subwoofer system should look for dedicated component speakers and higher power handling instead.
- Includes two pairs of 6×8 speakers plus plug-and-play harnesses for quick installation
- Polypropylene cones and ribbed surrounds resist environmental wear and keep consistent midbass
- Half-inch dome tweeters improve high-frequency clarity compared with basic factory speakers
- 90dB sensitivity and 50W RMS rating deliver louder output from factory head units without an amp
- Designed and bundled specifically for Ford F-150 fitment so connector fit may not match Subaru Impreza doors
- Coaxial design limits stereo imaging and separates less cleanly than component speakers
- Not intended for high-power amplified systems where a higher-end speaker would perform better
Verdict A sensible, high-sensitivity coaxial upgrade that boosts clarity and volume with easy installation but is not a substitute for a component-level, high-power audio build.
4. Hifonics ZS5768CX 5×7/6×8 Coaxial Car Speakers (pair)
| Impedance | 4 Ohms |
|---|---|
| RMS Power Handling (CEA426B) | 90 W |
| Max Power | 250 W |
| Frequency Response +/-3dB | 46 Hz-20 kHz |
| Sensitivity (1W/1m) | 88 dB |
These Hifonics ZS5768CX coaxial speakers are a budget-focused replacement that bring clearer highs and stronger mid-bass to a factory Subaru Impreza speaker location. Designed as a 5×7 or 6×8 fit, they include a 1-inch Neo-Mylar tweeter and a passive Butterworth crossover so the tweeter and midrange split smoothly without extra components. In practice they are straightforward to install into common 6×8 openings and reproduce vocals and instrument detail better than many factory units while still being easy to drive from a stock head unit. Build details such as rubber surrounds, Kapton voice coil formers, and stamped steel baskets suggest decent durability for daily use. Limitations are their moderate sensitivity and CEA-rated RMS of 90 watts, which means they will perform well for normal listening but may need an external amp for high-volume, bass-heavy setups. Also they do not include grills and are not waterproof, so care is needed in damp mounting locations. For a cost-conscious Impreza owner looking for a noticeable step up from factory speakers, these deliver solid value.
Best for: Budget-conscious Subaru Impreza owners who want an easy, factory-location speaker upgrade that improves clarity and mid-bass without adding an external amplifier or extensive modification.
Less Ideal for: Audiophiles seeking very high output or deep, amplified bass should consider powered options or a separate amp and subwoofer instead.
- Designed to fit common 5×7 or 6×8 factory openings for easy installation in the Subaru Impreza dash or rear locations
- Includes Neo-Mylar 1-inch tweeters and a passive crossover for clearer highs and smoother frequency splitting
- Rubber surround and anti-resonant stamped steel basket improve durability and reduce distortion
- CEA-rated RMS power handling (90W) and braided tinsel leads for reliable power handling during typical driving
- Not rated as waterproof so unsuitable for exposed or wet mounting locations
- Sensitivity is modest at 88 dB which limits loudness from a factory head unit without an amplifier
- No protective grills included, so speaker cones are exposed during installation
Verdict A practical, low-cost 6×8 speaker upgrade for Subaru Impreza owners that improves clarity and mid-bass but may need an amp for very high-volume performance.
5. Alphasonik AS268P 6×8 3-Way Coaxial Car Speakers (2 Pairs)
| Speaker Type | 3-Way Speaker |
|---|---|
| Impedance | 4 Ohms |
| Sensitivity | 92 dB |
| Frequency Response | 28 – 22,000 Hz |
| Included Components | 4x Speakers, Coaxial Cables, Mounting Screws, Installation Manual |
The Alphasonik AS268P ships as two pairs of 6×8 3-way coaxial speakers intended as a direct upgrade for factory door speakers in vehicles that accept 6×8 units. They deliver a broad frequency response and a high 92 dB sensitivity that helps them play louder from a factory head unit without adding an amp. The kit includes wiring leads, screws, and an installation manual so typical use is a straight swap into the Impreza's compatible 6×8 openings or with simple adapter plates. In real-world listening you can expect clearer vocals and more presence in the midrange and highs, while bass remains limited compared with dedicated subs. Power handling is modest at 35 W RMS per speaker, so pushing them hard on powerful aftermarket amps may be beyond their long-term comfort. Build quality is serviceable for the price and fits commonly reported mounting patterns, but some installs require careful fitment or minor orientation changes. For Subaru Impreza owners who want an affordable, noticeable step up from worn stock speakers without changing the head unit, these are a practical choice, though audiophiles should plan on adding a sub and better amplification later.
Best for: Risk-averse mainstream buyers who want a reliable, budget upgrade from worn factory speakers on a Subaru Impreza without changing the head unit or doing complex wiring.
Less Ideal for: Enthusiasts seeking audiophile-grade clarity or deep bass without adding an amplifier and subwoofer should consider higher-end components instead.
- High 92 dB sensitivity makes them louder from a factory head unit without an amp
- Includes two pairs plus wiring leads and mounting hardware for straightforward installs
- Wide frequency response (28–22,000 Hz) yields clear mids and highs for vocals
- 3-way coaxial design delivers fuller sound than simple two-way replacements
- Low RMS power (35 W each) limits clean output and headroom under heavy amplification
- Not designed to produce deep bass so a subwoofer is recommended for low-end impact
- Build and long-term durability are modest compared with premium brands
Verdict A cost-effective 6×8 coaxial kit that noticeably improves door-stage clarity in a Subaru Impreza when used with factory power, but it needs a sub or amp for fuller bass and higher headroom.
6. JBL Club 8620 5×7/6×8 2-Way Coaxial Car Speaker Pair
| Peak power (pair) | 330 watts per pair |
|---|---|
| RMS power (each) | 55 watts each |
| Impedance | 3 Ohms |
| Frequency response | 65Hz – 20Khz |
| Sensitivity | 93 dB |
The JBL Club 8620 is a 5×7/6×8 two-way coaxial speaker pair intended as a direct-style upgrade to common car speaker locations. Each speaker uses a polypropylene woofer and an edge-driven PEI dome tweeter driven through a supplied crossover, delivering a frequency range roughly from 65 Hz to 20 kHz and a sensitivity around 93 dB. In practice these speakers provide clearer highs and tighter mid-bass than many factory units, and they can be driven acceptably by a factory head unit or more cleanly by a small external amplifier. Installation is straightforward in vehicles that accept 5×7 or 6×8 footprints, and the set includes mounting adapters and crossovers, though buyers should plan to supply their own speaker wire and some small fasteners. Limitations include a relatively low nominal impedance and the need for careful sealing or backfill behind door panels to maximize bass; installers seeking audiophile-level performance will want dedicated amplification and a subwoofer. For Subaru Impreza owners looking for a noticeable step up without a big spend, these hit a practical sweet spot.
Best for: Practical optimizers who want a clear, cost-effective sound upgrade for a Subaru Impreza without a full system overhaul and prefer components that work well with factory electronics.
Less Ideal for: Buyers seeking reference-level clarity, deep sub-bass, or a turnkey premium install should consider higher-end component speakers, an amplifier, or a dedicated sub instead.
- Designed to fit common 5×7 or 6×8 factory openings for straightforward installation in vehicles that accept that footprint
- Polypropylene woofer and PEI tweeter give clear highs and punchy mid-bass compared with many stock speakers
- Supplied crossovers help protect the tweeter and simplify wiring when separating components
- High sensitivity around 93 dB makes them usable on factory head units without immediate need for an amp
- No speaker wire or mounting screws included so you may need additional hardware for installation
- 3 ohm nominal impedance can demand more current from an unmodified factory head unit
- Top-end audiophile detail and deep bass require an external amp and/or subwoofer to reach their potential
Verdict A practical, budget-friendly 6×8 upgrade that delivers noticeably better clarity and mid-bass for a Subaru Impreza without requiring major electrical changes.
7. ORION Cobalt CM6854 5×7/6×8 Mid-Range Bullet Loudspeakers (Pair)
| Impedance | 4 Ohms |
|---|---|
| Power (Max) | 1000W Max Power |
| Power (RMS) | 250W RMS |
| Sensitivity | 92 dB |
| Speaker Type | Midrange |
The ORION Cobalt CM6854 midrange speakers are built to upgrade a vehicles mid and upper-frequency reproduction, bringing louder, clearer vocals and mid-bass than most factory 6x8s. They are typically used as door or rear-deck replacements paired with a head unit or small amp; the 1.5" high-temperature voice coil and 250W RMS handling mean they tolerate higher power and play loud with less distortion. Notable features include a bullet-style midrange/tweeter design for extended highs, 92 dB efficiency for strong sensitivity from a stock radio, and a shallow mounting depth that helps with tighter speaker cavities. In practice they produce crisp mids and impactful presence, especially when driven by even a modest amplifier, though the large magnet and non-coaxial configuration can create fitment headaches in some factory openings and may require adapter plates or longer fasteners. They are not waterproof and lack wireless features, so installation location and protection matter. For a balanced buyer wanting a clear, punchy upgrade for an Impreza, these deliver strong value if you confirm physical fit before buying.
Best for: A balanced all-round buyer who wants a clear, punchy midrange upgrade for daily driving and weekend listening in a Subaru Impreza and values sound quality over strictly stock fitment.
Less Ideal for: People seeking a guaranteed drop-in, waterproof replacement or a strictly plug-and-play option without any mounting modification should consider other speaker types.
- High power handling (250W RMS) suitable for loud playback when paired with an amp
- High sensitivity (92 dB) that performs well with stock head units
- Bullet mid/tweeter design extends high-frequency clarity without separate tweeters
- Shallow mounting depth for easier installation in tighter speaker locations
- Durable build with large magnet assembly for strong midrange output
- Large magnet and bullet design can prevent direct drop-in fit in some factory 6×8 openings
- Not waterproof so placement in exposed locations risks damage
- Non-coaxial layout may require adapter hardware or modification for proper mounting
Verdict Great-sounding, high-output midrange upgrade for an Impreza if you can accommodate the larger magnet and confirm fitment beforehand.
Choosing the Right Subaru Impreza 6X8 Speakers: Key Factors to Consider
Mounting Depth and Cutout Size
Mounting depth and the speaker cutout dimensions determine whether a 6×8 speaker will physically fit into the Impreza door without interfering with window mechanisms or inner door structures. Measure both the depth from the mounting surface to the deepest protrusion and the diameter of the cutout to avoid surprises during installation.
Shallow-mount options are often necessary in compact door cavities, while deeper designs can offer improved bass if clearance allows. Also check the screw hole pattern and whether adapters are needed; a proper fit reduces vibration and ensures a secure seal that affects bass performance.
Power Handling and Sensitivity
Power handling (RMS and peak) indicates how much amplifier power a speaker can accept continuously and briefly without damage, which helps you match speakers to your factory or aftermarket head unit and any separate amplifier. Sensitivity, measured in decibels, shows how efficiently a speaker converts power into volume; higher sensitivity means louder output at the same power level.
A speaker with low sensitivity will need more amplifier power to play loudly without strain. Choose a speaker whose RMS rating aligns with your system’s output and whose sensitivity supports your desired loudness without distortion.
Cone Material and Surround Construction
The cone material shapes tonal balance and durability. Stiffer cones tend to deliver tighter bass and clearer midrange, while more flexible cones can sound warmer but may distort under high power. The surround material affects excursion and longevity; rubber surrounds usually resist environmental wear and provide consistent performance over time.
Consider materials that withstand temperature swings and humidity common inside car doors to avoid premature degradation. The combination of cone and surround also influences how the speaker responds to low frequencies and transient peaks.
Tweeter Design and Crossover Type
Tweeter quality and crossover design determine high-frequency clarity and how smoothly the speaker blends across the audio spectrum. Coaxial 6×8 speakers integrate the tweeter into the main assembly for a simpler install and cohesive imaging, while component-style systems separate the tweeter and woofer for more precise placement and improved staging when space and budget allow.
Pay attention to whether the crossover is passive and built into the woofer or external; adjustable crossovers give more control over tonal balance and can reduce harshness or overlap between drivers.
Installation Features and Hardware
Installation-friendly features such as included mounting adapters, gasket seals, plug-and-play wiring plugs, and clear template dimensions save time and reduce the need for modification. Corrosion-resistant terminals and robust mounting tabs help maintain connectivity in a vehicle environment.
Also consider whether the speaker requires trimming of factory grilles or if it integrates cleanly behind the stock cover. Ease of installation affects total project time and can influence whether you need professional help.
Durability and Weather Resistance
Speakers mounted in doors are exposed to temperature swings, moisture, and vibrations, so materials and construction that resist these stresses are important for long-term reliability. Look for corrosion-resistant metal parts, water-resistant cones or coatings, and durable surrounds that retain flexibility without cracking.
Longer-lasting speakers reduce the need for repeat replacement and maintain consistent tonal balance as mounting conditions change over time.
FAQ
Will a standard 6×8 speaker fit my Subaru Impreza door?
It often depends on the specific model year and the speaker’s mounting depth and hole pattern. Measure the door cutout diameter, screw hole spacing, and available depth behind the grille before buying. Choosing a shallow-mount design or using a vehicle-specific adapter can resolve clearance issues in many cases.
Should I choose coaxial or component 6×8 speakers for my Impreza?
Coaxial speakers are simpler to install since the tweeter mounts on the woofer assembly, and they work well if you want a straightforward upgrade. Component setups separate the tweeter for better imaging and flexibility, but they may require more space and wiring. The right choice depends on your desired soundstage and willingness to spend extra time on installation.
How much power handling do I need for the Impreza’s factory system?
Factory head units typically provide modest power, so match speakers with sensitivity ratings that produce adequate volume without requiring excessive amplifier power. If you plan to add an external amplifier, choose speakers with higher RMS ratings that can handle continuous power from that amp to avoid distortion or damage.
Can speaker mounting adapters affect sound quality?
Well-designed adapters mainly help with fit and should not degrade sound quality. Poorly sealed or thin adapters can allow vibrations or air leaks that reduce bass performance. Use rigid, well-sealed adapters and ensure a secure mounting surface for the best results.
Do I need to modify the door or grille to install new 6×8 speakers?
Many installations can be completed without major modifications if you select speakers that match the Impreza’s mounting pattern or use compatible adapters. Some higher-performance or deeper speakers may require minor trimming or relocation of clips. Always verify dimensions and plan for potential adjustments before starting the install.
How We Chose the Best Subaru Impreza 6X8 Speakers
We focused on products that deliver reliable fit and sound in the Subaru Impreza door openings. Key evaluation criteria included mounting depth and bracket compatibility to ensure physical fit, power handling and sensitivity to match common head units and amplifiers, and frequency response and cone design to assess clarity and bass performance. We also evaluated build quality and materials for durability in a vehicle environment, and installation features such as included adapters, gasket design, and terminal accessibility for easier wiring.We excluded options that required major door modification, custom fabrication, or significant dash alterations. We did not include products that lack clear dimensional specs or that are explicitly sold only as part of multi-vehicle kits without Impreza-specific fit information. The list prioritizes speakers that balance sonic performance with straightforward installation for most Subaru Impreza owners.
Our full evaluation process is outlined in our review methodology.
Conclusion
Prioritize speakers that match the Subaru Impreza’s physical constraints while delivering the tonal balance you prefer. Focus on mounting depth, power handling, and sensitivity to ensure the new 6×8 speakers integrate well with your head unit or amplifier and provide reliable volume and clarity.Remember that tradeoffs exist between ease of installation and ultimate sound quality. If you need a simple upgrade, coaxial or shallow-mount options may be best. If you want improved imaging and control, consider component-style solutions and be prepared for a more involved installation.
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