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Upgrading the audio in your Mitsubishi Eclipse can transform daily drives into a more engaging experience. Choosing the right 6×8 speaker affects clarity, bass response, and how well the speaker integrates with your existing door or rear panel. This guide covers the shortlisted top 6×8 speakers selected for the Eclipse and explains the practical differences that matter. Read on to understand the evaluation criteria we used, including power handling and physical fitment, and to see the top options for reliable performance and easier installation.
Looking for other parts? See all Mitsubishi Eclipse 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 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 (Bundle) |  |
| Best Budget The cheapest option that still gets the job done reliably | Hifonics ZS5768CX 5×7/6×8 Coaxial Car Speakers (4-pack) |  |
| 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 DS-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 Speakers (Pair)
| Speaker Type | Coaxial |
|---|---|
| Impedance | 4 Ohms |
| Power (Max) | 250 Watts |
| Tweeter Diameter | 1 Inches |
| Woofer Diameter | 8 Inches |
The Kenwood KFC‑C6866S are 6×8 two‑way coaxial speakers intended as direct replacements for factory door or rear speakers in vehicles with 6×8 fitment like the Mitsubishi Eclipse. They use a polypropylene/paper woofer for fuller midbass and a 1" PEI balanced‑dome tweeter to sharpen high frequencies, so you get clearer vocals and more presence without adding an external amp. The widened magnet circuit and sound field enhancer are aimed at cleaner midrange and a more open soundstage than typical stock speakers. Installation is straightforward for vehicles that accept 6×8 units and the low mounting height helps fit tighter factory speaker openings. Expect solid day‑to‑day performance for commuting and casual listening, though these are not designed for heavy bass fans or waterproof outdoor use. If you keep the factory stereo and want a reliable, plug‑in upgrade for an Eclipse, these deliver dependable improvement in clarity and durability.
Best for: Reliability‑focused buyers looking for a dependable, factory‑style speaker upgrade for regular driving and clear everyday listening in a Mitsubishi Eclipse.
Less Ideal for: Audiophiles chasing heavy bass, high SPL, or those who plan to drive a powered aftermarket system should consider component speakers or an amplified setup instead.
- Designed to fit common 6×8 factory openings with a shallow 5/16" mounting height for easier installation
- Polypropylene/paper woofer improves midbass and midrange clarity over typical stock speakers
- 1" PEI balanced‑dome tweeter delivers cleaner high frequencies and better detail
- Built with an enlarged magnet circuit and sound field enhancer for more stable, musical sound without an external amp
- Not optimized for deep bass or high‑power subwoofer replacement
- Not water resistant so not suitable for exposed outdoor mounting
Verdict A reliable, easy‑to‑fit 6×8 factory‑replacement that brings clearer mids and highs to a Mitsubishi Eclipse without needing extra amplification.
2. Kicker KS-Series 6×8 Coaxial Speakers (pair)
| Speaker size | 6×8 |
|---|---|
| Tweeter size | .75 inch |
| Impedance | 4 Ohm |
The Kicker KS-Series 6×8 coaxial speakers are a direct-fit aftermarket upgrade intended to replace factory door or deck speakers in vehicles like the Mitsubishi Eclipse. They pair a 6×8 woofer with a .75 inch tweeter in a 2-way coaxial layout so you get fuller low end and clearer high frequencies without installing separate component tweeters. Typical use is bolt-in replacement for the factory 6×8 locations and they include mounting hardware and spliced connectors to simplify installation. The internally dampened polypropylene cones and rubber surrounds give punchier midbass and stable performance at higher volumes, while the articulating tweeter options let you fine-tune imaging in tight dash or door spaces. Important limitations are that these are not full-range components for heavy low-frequency duties, so adding a subwoofer or using amp-based crossovers will improve very deep bass, and they need correct wiring and mounting depth checks to avoid fit issues in some Eclipse trim levels. For buyers wanting a straightforward sound upgrade with minimal modification, these deliver noticeable improvement over stock speakers.
Best for: Convenience-focused buyers who want a bolt-in sound improvement over factory speakers for daily driving without modding the car or adding complex components.
Less Ideal for: Audiophiles seeking full component systems or owners who want large-volume, subwoofer-level bass from door speakers alone should look at component setups or add a dedicated subwoofer.
- Direct-fit 6×8 coaxial design simplifies replacement of factory speakers in compatible locations
- Internally dampened polypropylene cone and rubber surround for improved midbass and durability
- Articulating and surface-mountable tweeter options let you tailor imaging without major panel work
- Includes mounting hardware and spliced connectors to speed installation
- Not intended to reproduce very deep bass on their own so a subwoofer or careful crossover tuning may be needed for low-end heavy music
- May require checking mounting depth and trim brackets for exact fit in some Eclipse model years
Verdict A plug-and-play 6×8 upgrade that gives clearer highs and punchier midbass for Mitsubishi Eclipse owners who prioritize an easy, no-fuss installation.
3. KICKER 43DSC6804 6×8-inch DS Series Coaxial Speaker Kit with Harness for Ford F-150 (Bundle)
| Impedance | 4 Ohms |
|---|---|
| Sensitivity | 90 dB |
| Frequency Response | 45-20,000 Hz |
| RMS Power | 50 watts |
These KICKER DS Series 6×8 coaxial speakers deliver a clear, full-range upgrade when replacing worn factory door speakers. The kit pairs two 2-way speakers with included harnesses so installation is plug-and-play without cutting or splicing. The polypropylene cones, acoustic-foam surrounds, and 1/2-inch dome tweeters give a balanced response from about 45 Hz up to 20 kHz, with a listed sensitivity that helps them play loudly from a factory head unit. Peak and RMS power ratings indicate they can handle moderate power when an aftermarket amplifier is added, though they are aimed at improving clarity and volume rather than providing deep low bass. Practical benefits include reduced installation time thanks to vehicle-specific harnesses and a thin top-mount depth for tight door pockets. Limitations are that these are coaxial two-ways meant for door-level upgrade work, so serious audiophiles building a high-power system or seeking strong sub-bass will want component speakers and a separate subwoofer instead.
Best for: Performance-oriented buyers who want a straightforward, factory-style speaker upgrade that increases clarity and loudness while keeping installation simple.
Less Ideal for: Enthusiasts building a high-power or competition-grade system focused on deep bass or ultimate imaging should look at component speakers plus a subwoofer instead.
- Includes vehicle-specific harnesses for plug-and-play installation without cutting
- Polypropylene cone with acoustic-foam surround and dome tweeter for balanced full-range sound
- High sensitivity that improves loudness from a factory head unit
- Thin top-mount depth suits doors with limited clearance
- Coaxial design and door placement limit low-frequency extension compared with component systems and dedicated subwoofers
- Not intended for very high-power amplified systems where higher-end speakers would perform better
Verdict A plug-and-play 6×8 coaxial upgrade that boosts clarity and volume for a performance-minded installer but is not a substitute for component speakers and a dedicated subwoofer.
4. Hifonics ZS5768CX 5×7/6×8 Coaxial Car Speakers (4-pack)
| Impedance | 4 Ohms |
|---|---|
| RMS Power Handling (CEA426B) | 90 W |
| Max Power | 250 W |
| Frequency Response +/-3dB | 46Hz-20kHz |
| Sensitivity (1W/1m) | 88 dB |
The Hifonics ZS5768CX set is a value-oriented coaxial speaker pack intended as a direct replacement for many factory 6×8 locations, including common mounts in the Mitsubishi Eclipse. Each kit combines a neo-mylar soft dome tweeter with an alpha-cellulose cone and rubber surround to produce clearer highs and stronger mid-bass than typical stock speakers. The speakers use a passive Butterworth crossover to steer frequencies to the tweeter at about 4 kHz and have a ferrite motor and Kapton voice-coil former for thermal stability under normal driving levels. Installation is straightforward in factory 6×8 openings and the stamped steel basket limits cone flex and distortion. Practical benefits are noticeable volume and improved detail without needing an external amplifier for everyday listening. Limits to expect are modest sensitivity and power handling compared with higher-end options, so they will not sustain very high SPL for long or replace a powered system for bass-heavy listening. For Eclipse owners wanting an inexpensive, audible upgrade from factory units these speakers hit the right price-performance point.
Best for: Budget-conscious Mitsubishi Eclipse owners who want a straightforward, factory-replacement upgrade to improve clarity and mid-bass without adding an amp or major modifications.
Less Ideal for: Audiophiles seeking very high output or deep bass and buyers planning to drive speakers at extreme volumes should consider a dedicated component system with amplification instead.
- Designed to fit 5×7 or 6×8 factory locations for easy installation.
- Neo-Mylar tweeter with a passive crossover for clearer highs and smoother midrange integration.
- Rubber surround and anti-resonant stamped steel basket reduce distortion and improve durability.
- Kapton voice-coil former and braided tinsel leads improve heat dissipation and reliability under normal driving use.
- Sensitivity around 88 dB and conservative RMS means they are not ideal for very high-volume, bass-heavy listening.
- Not waterproof so they rely on proper door protection and mounting locations to avoid moisture issues.
Verdict A practical, low-cost 6×8 factory-replacement option for Mitsubishi Eclipse owners who want better clarity and mid-bass without adding an amp.
5. Alphasonik AS268P 6×8-inch 3-Way 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 |
The Alphasonik AS268P kit provides four 6×8-inch 3-way speakers intended as a straight replacement for common vehicle door applications. It is typically used to swap out weak factory speakers when you want clearer midrange and a bit more presence from the dash or door locations. The kit includes pigtail leads, mounting screws and a shallow mounting depth that helps in tight door cavities. Key real-world benefits are higher sensitivity for louder output with a factory head unit and extended frequency response that brings improved vocals and highs compared with many stock units. Limitations are also clear: rated power is modest at 35 watts RMS per speaker so deep bass remains limited without a subwoofer or amplifier, and build materials and small ferrite magnets mean these are not a high-end, long‑lasting audiophile upgrade. Fit and finish vary by vehicle so careful test-fit and proper sealing/damping are recommended for best results in road noise and longevity.
Best for: A risk-averse mainstream buyer who wants an affordable, factory-replacement style upgrade to improve clarity and volume using the car's stock stereo without committing to amps or custom installs.
Less Ideal for: Audiophiles, heavy bass listeners, or anyone planning a high-power amplified system who needs stronger RMS power and deeper low-end should choose higher-spec speakers or add a dedicated subwoofer.
- Includes four speakers plus pigtail cables and mounting hardware for a full door replacement
- 3-way design and 28–22,000 Hz frequency range improves clarity and treble over many stock speakers
- 92 dB sensitivity provides louder output from a factory head unit without an amp
- Low RMS power (35 W each) limits bass extension and headroom without a sub or amplifier
- Not water resistant so exposure in door cavities with moisture can reduce lifespan
- Build uses small ferrite magnets so long-term durability and claimed specs may lag higher-end units
Verdict A pragmatic, wallet-friendly 6×8 3-way speaker kit that noticeably improves factory sound but needs a sub or amp for real bass.
6. KICKER DS-Series 6×8 Coaxial Car Speakers (Pair)
| Impedance | 4 Ohms |
|---|---|
| Sensitivity | 90 dB |
| Peak Power Handling | 200W |
| Frequency Response | 45-20k Hz |
| Speaker Type | Coaxial |
The KICKER DS-Series 6×8 coaxial speakers are a budget-friendly plug-and-play upgrade for a Mitsubishi Eclipse that need replacement door speakers. They deliver clearer highs and stronger mid-bass than many factory speakers thanks to stiff polypropylene cones, ribbed foam surrounds, and PEI dome tweeters with zero protrusion so they clear factory grilles and window mechanisms. These speakers are high-sensitivity drivers that play loud with a factory head unit yet can also handle boosted power from an aftermarket amplifier. Installation is straightforward for most 6×8 openings, and the design aims to fit without drilling. Practical benefits include noticeably improved vocal clarity, better handling of head-unit power, and a drop-in fit for many vehicles. Limitations are typical for coaxials at this price: you should not expect deep low-frequency output like a dedicated subwoofer, and some users report needing adhesive or mounting tape to get a perfect door seal in certain vehicles. For a practical optimizer looking to get the most sonic improvement per dollar, these deliver sensible performance without complex tuning.
Best for: A practical optimizer who wants a straightforward, cost-effective sound upgrade for a Mitsubishi Eclipse without aftermarket amplification most of the time.
Less Ideal for: Audiophiles seeking deep bass or owners looking for a full-component overhaul including separate crossovers and subwoofer integration should consider higher-end component speakers and a subwoofer instead.
- Drop-in style intended to fit most 6×8 factory openings without drilling
- High-sensitivity motor yields louder output from a stock head unit
- PEI dome tweeter provides clear, non-intrusive highs that sit behind factory grilles
- Stiff polypropylene cone and ribbed surround improve midrange clarity and durability
- Coaxial design cannot reproduce deep sub-bass like a separate subwoofer
- May require additional mounting tape or adapters for a perfect seal or plug compatibility in some doors
Verdict A practical, drop-in 6×8 upgrade that noticeably improves clarity and loudness for the price while leaving deep bass to a subwoofer.
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 |
| Speaker Type | Midrange with bullet tweeter |
The ORION Cobalt CM6854 are midrange 6×8-style speakers built for car audio upgrades where louder, clearer mids and highs are the priority. They are used as direct replacements in door or rear deck locations on vehicles that accept 6×8 mounts, pairing a 1.5" high-temp voice coil and a bullet-style tweeter to extend high frequencies while preserving midrange presence. Notable features include 250W RMS/1000W peak power handling, a reported 92 dB efficiency, and a shallow mounting depth that helps with tighter dash or door pockets. In practice they drive vocals and guitars forward and can play very loud without apparent distortion when matched to an appropriate head unit or amplifier. Limitations to consider are the large magnet assembly that has caused fitment headaches in some vehicles and the speakers benefit from amplification to reach full potential, so they may be underwhelming on low-power factory radios. Installation may require adapter plates or longer fasteners to fit into some Eclipse mounting points.
Best for: Balanced all-round buyers who want a noticeable, reliable midrange and vocal upgrade for a Mitsubishi Eclipse and value loud, clean reproduction without chasing extreme custom builds.
Less Ideal for: Drivers who need a drop-in, guaranteed fit without modification or those who plan to run only a factory head unit with no amplifier should consider smaller or lower-power alternatives.
- High power handling (250W RMS, 1000W peak) for loud, dynamic sound
- 92 dB sensitivity for stronger output from moderate head unit power
- Bullet tweeter design delivers clear high frequencies and vocal detail
- Shallow mounting depth helps with tighter door or dash locations
- Large magnet housing can interfere with factory mounting holes and may need adapters
- Performs best with external amplification rather than low-power factory radios
Verdict A loud, efficient midrange upgrade that delivers clear mids and highs for a Mitsubishi Eclipse but may require fitment adapters and an amp to reach its full potential.
Choosing the Right Mitsubishi Eclipse 6X8 Speakers: Key Factors to Consider
Physical Fitment And Mounting Depth
Accurate physical fitment is critical because door and rear panel cavities in the Mitsubishi Eclipse have limited space. Measure mounting depth and overall diameter to ensure the speaker sits flush and the grille clears interior panels.
Mismatched fitment can lead to rattles, poor sealing, or the need for cutting or modification. Check mounting hole patterns and whether adapters or spacers are required to achieve a secure, vibration-free mount.
Power Handling And RMS Rating
Power handling determines how much continuous power a speaker can take without distortion or damage. Look for RMS specifications rather than peak power because RMS reflects real-world performance when paired with an aftermarket amplifier or the factory head unit.
Matching speaker RMS to amplifier output reduces clipping and preserves tonal balance. Speakers with insufficient RMS may sound tinny at higher volumes, while one with much higher capacity may be under-driven by a stock system.
Impedance And Electrical Compatibility
Speaker impedance affects how the head unit or amplifier loads electrically. Most car systems expect 4 ohm speakers, but variations exist, so verify the impedance to avoid overloading the factory output stage.
Implications include possible changes in volume, thermal stress on the head unit, or the need to reconfigure parallel/series wiring when installing multiple speakers. Ensuring electrical compatibility helps maintain reliability and prevents distortion.
Driver Configuration And Sound Character
Coaxial designs integrate tweeters into the same housing for compact installation and broader frequency coverage, while component systems separate drivers for improved imaging and clarity. Decide whether a full, space-efficient solution or a more sophisticated multi-driver setup fits your goals.
Driver materials and crossover design influence tonal balance. Softer cones often yield smoother mids, while stiffer materials can enhance bass and transient response. Consider the desired sound signature when selecting between coaxial and component-style 6×8 speakers.
Build Quality And Weather Resistance
Car speakers endure temperature swings, humidity, and vibration. Options with corrosion-resistant frames, treated surrounds, and robust cones last longer and maintain performance in the vehicle environment.
Higher build quality also reduces deformation at higher volumes, helping preserve sound quality. If your Eclipse is used in humid climates, look for speakers with better environmental sealing to avoid premature degradation.
Installation Features And Accessories
Accessories such as installation brackets, wiring harness adapters, and detailed templates make an upgrade less time-consuming and reduce the risk of wiring errors. Some speakers include spacer rings or multiple mounting screws to fit different vehicles.
Consider whether you will retain factory trim pieces or need to modify panels. Built-in features that simplify mounting and connectivity speed up installation and reduce the likelihood of vibration or grounding issues after the upgrade.
FAQ
Will 6×8 speakers fit in the Mitsubishi Eclipse without modification?
Many 6×8 speakers are designed to fit common vehicle openings, but fitment depends on mounting depth and bolt pattern. Measure the speaker cavity depth and mounting hole layout in your Eclipse before purchasing. If a direct bolt pattern is not available, aftermarket adapters or spacer rings often provide a straightforward solution.
Do I need an amplifier when upgrading to 6×8 speakers?
An amplifier is not always required, but it often improves clarity and dynamics. Factory head units may not provide enough clean power to drive higher-performance speakers to their potential. If you aim for louder, distortion-free playback or plan to use speakers with higher RMS ratings, adding an amplifier is usually beneficial.
Are 6×8 coaxial speakers a good choice for daily driving?
Coaxial 6×8 speakers are a practical choice for everyday use because they combine tweeter and woofer in a single unit for full-range sound and simpler installation. They generally offer good vocal clarity and a balanced response without the extra installation complexity of separate components. For most daily drivers, coaxials provide a solid balance of performance and convenience.
How can I improve bass response with 6×8 speakers in my Eclipse?
Bass response depends on speaker design, enclosure, and door sealing. Use speakers with a stiffer cone and properly treated surrounds for better low-frequency output. Ensuring a tight seal between the speaker and mounting surface and adding sound-deadening material to the door can also reduce panel resonance and enhance perceived bass.
What should I check for durability when choosing replacement 6×8 speakers?
Inspect materials and construction details like cone composition, surround treatment, and frame finish. Look for corrosion-resistant mounting hardware and seals designed for vehicle environments. Durable adhesives and robust tweeter mounts reduce the risk of failure due to temperature and vibration over time.
How We Chose the Best Mitsubishi Eclipse 6X8 Speakers
We focused on speakers that are appropriate for the Mitsubishi Eclipse platform and that meet realistic expectations for in-car audio. Key evaluation criteria included power handling and RMS rating to ensure consistent output; physical dimensions and mounting depth so the speaker fits typical Eclipse locations; frequency response and midrange clarity to improve vocals and instruments; build quality and materials for durability in a car environment; and ease of installation including mounting adapters and wiring compatibility. We excluded speakers that require extensive custom fabrication or that are incompatible with standard Eclipse speaker locations. We also filtered out models lacking clear technical specifications or those without common mounting options. The result is a list that balances sound quality, fitment, and long-term reliability for this specific vehicle application.
Our full evaluation process is outlined in our review methodology.
Conclusion
Prioritize accurate fitment, realistic power handling, and the driver configuration that matches your listening goals when choosing Mitsubishi Eclipse 6×8 speakers. Balance electrical compatibility and build quality to avoid installation headaches and to ensure long-term reliability. Tradeoffs typically involve ease of installation versus audio refinement. If you plan to keep the stock head unit, choose speakers with sensitivity and RMS ratings aligned with that output. If you want higher volume and cleaner dynamics, factor in adding an amplifier and select speakers with appropriate specifications.
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