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Upgrading the speakers in your Scion tC can transform cabin sound, making music clearer and bass more controlled without changing the factory radio. Choosing the right 6×8 speakers matters because size-compatible drivers ensure proper fit and reliable performance while preventing installation headaches. This guide covers our shortlisted Scion tC 6×8 speakers, chosen for their balance of power handling, sound quality, and installation compatibility. Below we explain the criteria used to evaluate options and what to expect during installation before the product list.
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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 | MB Quart FKB168 6×8" 200W Coaxial Car Speakers (4-pack) |  |
| Best Quality Built to a higher standard if you want something more solid | KICKER 6×8" CS Series Coaxial Speaker Upgrade Kit with Harness (4-pack) |  |
| Best Budget The cheapest option that still gets the job done reliably | Orion Cobalt Series CB683 6×8" 3-Way Coaxial Car Speakers (Pair) |  |
| Most Sold A high-volume bestseller chosen again and again | UTV Stereo Kicker DS-Series 6×8 Coaxial Speaker Upgrade Kit (4 pack) with Harness |  |
| Best Value for Money The sweet spot between price and what you get | JBL GX8628 6×8" 2-Way Coaxial Car Speakers (Pair) |  |
| Best Overall The best all-around choice for most situations | Alphasonik AS268P 6×8-inch 3-Way Car Speakers (2 Pairs) |  |
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 |
| Speaker Size | 8 Inches |
The Kenwood KFC‑C6866S are 6×8 two-way coaxial speakers intended as direct replacement door or rear speakers for vehicles that use 6×8 openings. They combine a polypropylene paper woofer with a 1-inch PEI balanced-dome tweeter to sharpen highs while the larger cone provides midbass presence. In typical use you wire them into the Scion tC factory speaker locations and power them with the stock head unit or a modest aftermarket amplifier. Notable details include a shallow mounting height to ease fitment in tight factory locations and an enlarged magnet circuit for improved clarity at listening levels. Practical benefits are better vocal definition and cleaner high frequencies compared with many factory speakers, plus straightforward installation when correct adapters or mounting hardware are used. Limitations are that these are not bass-heavy subwoofer replacements and they rely on your head unit for power, so they will not produce deep low-end without an amplifier or a dedicated sub. Some buyers may also need an adapter or harness for perfect plug-and-play fitment in the Scion tC.
Best for: Drivers prioritizing reliable, factory-style upgrades who want clearer highs and fuller midrange from the Scion tC without changing the head unit or adding complex electronics.
Less Ideal for: Audiophiles seeking strong low-frequency output or anyone wanting a high-power speaker to drive without adding an amplifier or subwoofer.
- Balanced-dome tweeter improves high-frequency clarity for vocals and instruments.
- Polypropylene paper woofer delivers solid midbass and natural midrange.
- Shallow mounting height helps fit into tight factory speaker locations.
- Designed as a direct replacement 6×8 pair for typical car door or rear locations.
- Not designed to produce deep bass without an external amplifier or subwoofer.
- May require a vehicle-specific adapter or wiring harness for true plug-and-play installation.
Verdict A reliable, easy-to-fit 6×8 replacement that noticeably upgrades clarity and midrange in the Scion tC but will need extra amplification for deep bass.
2. MB Quart FKB168 6×8" 200W Coaxial Car Speakers (4-pack)
| Speaker Type | Coaxial, Tweeter |
|---|---|
| Impedance | 4 Ohms |
| Speaker Maximum Output Power | 200 Watts |
| Tweeter Diameter | 1 Inches |
| Woofer Diameter | 8.6 Inches |
These MB Quart FKB168 6×8 coaxial speakers are a drop-in upgrade intended to replace factory speakers and improve clarity and midrange presence in a Scion tC. They pair an aluminum dome tweeter with a polypropylene woofer and an internal 6 dB crossover so highs stay clear while midrange remains forward; users typically install them in door locations and run them from the factory head unit or add a small amp for better dynamics. Notable design touches include butyl rubber surrounds for durability, a Kapton voice coil former for heat management, and stamped steel frames for a solid mounting surface. Practical benefits include cleaner highs, controlled cone movement that reduces distortion at higher volumes, and compatibility with standard spade or solder connections. Limitations are that sensitivity is modest so the factory head unit may not fully drive them to their potential without an amp, and they do not include grille covers. For a convenience-minded Scion tC owner looking for a straightforward speaker swap, these offer a clear sonic step up from stock but may benefit from amplification for best low-end impact.
Best for: Convenience-driven buyers who want a straightforward, factory-style speaker swap for their Scion tC that noticeably improves clarity without complicated installation or extra components.
Less Ideal for: Audiophiles seeking deep, room-filling bass or maximum output without adding an amplifier should consider component systems or adding a dedicated subwoofer and amp instead.
- Aluminum dome tweeters deliver clearer high frequencies and improved reliability over typical cloth tweeters
- Butyl rubber surrounds and polypropylene cones provide durable midbass response and resistance to weather
- Internal 6 dB crossover ensures smoother transition between woofer and tweeter without extra components
- Heavy gauge stamped steel frames create a stable mounting surface for a secure fit in the door
- Modest sensitivity means the factory Scion tC head unit may struggle to drive deep bass without an aftermarket amp
- Speakers ship without protective grilles so additional covers are needed for exposed mount locations
Verdict A practical, easy 6×8 upgrade for Scion tC owners who want clearer highs and tighter midrange with the option to add amplification for stronger bass.
3. KICKER 6×8" CS Series Coaxial Speaker Upgrade Kit with Harness (4-pack)
| Speaker Type | Coaxial |
|---|---|
| Impedance | 4 Ohms |
| Sensitivity | 90 dB |
| Peak Power | 225 watts |
| Included Components | 4 speakers and 2 harnesses |
This KICKER 6×8 CS Series kit replaces factory door speakers with higher-sensitivity coaxials and includes two harnesses for plug-and-play wiring. It is typically used as a direct swap to improve clarity, midrange detail, and bass response without major modification. Notable features include PEI tweeters for crisp highs, a poly-foam surround treated to resist UV and heat, an extended voice coil and large motor for stronger bass, and harnesses that eliminate cutting or splicing. In practice the speakers deliver cleaner highs and fuller mids compared with stock units and the included adapters speed installation and reduce wiring errors. Important limitations are that the kit is tailored physically to vehicles that accept 6×8 replacements and that true low-frequency extension still benefits from a dedicated subwoofer, so bass will be improved but not transformed into sub-level output. Also the speakers are wired only and require a compatible head unit or amp to reach peak performance.
Best for: Performance-oriented buyers who prioritize clearer highs, stronger mid-bass, and a direct, no-fuss installation when upgrading a Scion tC's factory speakers.
Less Ideal for: Buyers seeking deep low-frequency output without adding a subwoofer or those who need wireless connectivity or a full amplifier solution should look elsewhere.
- Vehicle-specific harnesses allow plug-and-play installation with no cutting required
- PEI tweeters and neodymium magnets provide clear highs and higher volume in the upper range
- UV-treated poly-foam surrounds resist heat and sunlight for longer life in door locations
- Large woofer motor and extended voice coil improve bass control compared with typical factory speakers
- Designed as a speaker-level upgrade so it will not produce deep sub-bass without adding a subwoofer or external amplifier
- Wired connection only with no wireless options
- Fit depends on the vehicle accepting 6×8 replacements which may require grille or bracket adjustments
Verdict A high-sensitivity, plug-and-play 6×8 speaker bundle that noticeably upgrades clarity and mid-bass for performance-focused Scion tC owners but will need a sub or amp for deep bass.
4. Orion Cobalt Series CB683 6×8" 3-Way Coaxial Car Speakers (Pair)
| Impedance | 4 Ohms |
|---|---|
| Power Handling | 70W RMS / 280W peak |
| Speaker Type | 3-way coaxial |
| Material | Polypropylene cone; Butyl rubber surround |
| Frequency Response | 75Hz-20kHz |
The Orion CB683 is a budget-focused 3-way coaxial speaker pair designed to replace factory speakers in a car audio setup. Each speaker combines a woofer, midrange and tweeter in one housing to improve clarity across lows, mids and highs without requiring extra components. The polypropylene cone and butyl rubber surround help keep distortion down and survive regular driving conditions, while a 4 ohm impedance and quoted 70W RMS (280W peak) mean these are suitable with most factory head units or modest amplifiers. Installation is straightforward for standard 6×8 openings and the speakers include basic mounting hardware. You should expect noticeably fuller bass and clearer vocals compared with many stock Scion tC speakers, especially when paired with a stronger head unit or small amp. Limitations are typical for the price: the frequency response bottoms out around 75Hz so very deep bass will be limited, and they are not waterproof so placement and exposure matter. Fitment can require minor trimming or adaptors in some vehicles, so check mounting depth and grille clearance for the Scion tC before final installation.
Best for: A budget-conscious buyer who wants a clear, affordable upgrade from factory speakers in a Scion tC and values punchier midbass and improved clarity without adding separate components.
Less Ideal for: Audiophiles seeking deep, subsonic bass or those who need weatherproof speakers for exposed locations should consider higher-end component systems or sealed subwoofers instead.
- 3-way coaxial design offers better high, mid and low integration without external crossovers
- Polypropylene cone with butyl rubber surround resists distortion and holds up to regular use
- Handles modest power (70W RMS / 280W peak) so pairs well with factory head units or small amps
- Easy installation for standard 6×8 speaker openings and includes basic hardware
- Frequency response starts at about 75Hz so deep sub-bass is limited
- Not rated waterproof so exposure to moisture or fully open locations is risky
Verdict A wallet-friendly 3-way 6×8" upgrade that tightens mids and adds punchy midbass for Scion tC drivers, but it will not replace a dedicated sub for deep lows.
5. UTV Stereo Kicker DS-Series 6×8 Coaxial Speaker Upgrade Kit (4 pack) with Harness
| Speaker Type | Coaxial |
|---|---|
| Peak Power | 200 Watts |
| RMS Power | 50 Watts |
| Impedance | 4 ohms |
| Sensitivity | 90 dB |
This bundle replaces factory 6×8 door speakers with a pair of DS-series coaxial 6x8s plus a second pair and matching plug-in harnesses for a simple swap. Each speaker pair is a 2-way design with a polypropylene cone, half-inch dome tweeter and ribbed foam surround; rated at 200 watts peak and 50 watts RMS with 90 dB sensitivity, they deliver clear midrange and detailed highs when driven by a factory head unit. The included harnesses are intended to plug into the vehicle wiring without cutting, and the package ships with trim tools to ease door panel removal. In use the speakers produce crisp vocals and accurate source quality, though reviewers note limited low-end slam compared with powered subwoofers. One reported missing connector pieces in a kit, so check the harness parts on arrival before installing. If you want a straightforward, factory-style improvement in clarity and treble detail with minimal installation fuss, this kit does that; if you need deep bass or high-power aftermarket amplification, you will need additional components.
Best for: A risk-averse mainstream buyer seeking a low-risk, factory-style sound upgrade without modifying vehicle wiring or adding amplifiers; ideal for owners who prioritize easy installation and clearer everyday listening.
Less Ideal for: Audiophiles chasing deep bass or those planning a high-power aftermarket system should look for speakers designed for amplified setups or add a subwoofer and amp instead.
- Designed as direct replacement 6×8 speakers for simple door swap with included harnesses for plug-and-play installation
- Two-way coaxial design with dome tweeter for clearer highs and improved vocal detail over many factory speakers
- High sensitivity (90 dB) makes them easy to drive from a factory radio without an aftermarket amp
- Bundle includes trim tools to simplify door panel removal and installation
- Limited low-frequency output compared with larger speakers or a powered subwoofer
- One customer reported missing mating plug pieces in the harness packaging which can prevent immediate installation
Verdict A plug-and-play 6×8 speaker bundle that reliably improves clarity and highs for a factory-style upgrade but will not substitute for dedicated low-frequency bass drivers.
6. JBL GX8628 6×8" 2-Way Coaxial Car Speakers (Pair)
| Speaker Type | Coaxial 2-way |
|---|---|
| Frequency Response | 50Hz – 21kHz |
| Power Handling (per speaker) | 180W peak / 60W RMS |
| Sensitivity | 92 dB @ 2.83V |
| Nominal Impedance | 2.3 ohms |
The JBL GX8628 are 6×8-inch 2-way coaxial speakers intended as a direct upgrade for factory door or rear locations in vehicles like the Scion tC. They pair a Plus One polypropylene woofer cone with an edge-driven soft dome tweeter and a proprietary tweeter deflector to extend highs up to 21 kHz while keeping mids and bass tight for everyday listening. Rated for 180 watts peak and 60 watts continuous each, they work well with standard head units and will accept more power if you add a small amplifier. Installation is typically straightforward for Scion tC 6×8 openings and the speakers have a factory-quality fit and finish that blends with OEM openings. Expect clearer vocals, better high-frequency detail, and improved punch compared with stock speakers, though they are not designed to produce deep sub-bass on their own. If you want stronger low-end you will still need a dedicated subwoofer or amplification. For a practical, value-driven upgrade that reliably improves in-car sound, these JBLs are a sensible choice.
Best for: Practical optimizers who want a reliable, factory-quality sound upgrade for their Scion tC without major modifications or added amplification.
Less Ideal for: Audiophiles seeking deep, room-shaking bass or users wanting a full high-power component system should consider adding a subwoofer or choosing a component speaker set instead.
- Balanced two-way design with soft dome tweeter for clear highs and natural mids
- Plus One polypropylene woofer cone improves midbass and durability over typical stock speakers
- Accepts moderate power (180W peak, 60W RMS each) so it performs well with factory head units and with a small amp
- Designed for direct-fit replacement in common 6×8 vehicle openings for easier installation
- Limited low-frequency extension compared with dedicated subwoofers, so deep bass requires adding a sub
- Nominal impedance under 4 ohms may draw more current from weak factory head units
Verdict A practical, factory-friendly 6×8 speaker upgrade for Scion tC owners who want clearer highs and better midbass without major system changes.
7. 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, Installation Manual |
| Style | 2 Sets 6×8 Inch – 350 Watts |
The Alphasonik AS268P bundle supplies two pairs of 6×8-inch 3-way coaxial speakers intended as direct replacements for common factory locations. They are typically used to replace weak door or rear deck speakers when you want clearer mids and more presence without adding an amp. Notable features include a 3-way dynamic driver configuration, 4 ohm impedance, quoted sensitivity of 92 dB and bundled mounting hardware and pigtails. In practice these speakers deliver noticeably crisper vocals and more midrange detail than many stock Scion tC speakers, and the higher sensitivity makes them easy to drive from a factory head unit. Limitations are modest RMS power handling (35 W each) and limited low-end output, so bass will remain thin unless you add a subwoofer or amplifier. Build quality is serviceable for the price, but expect ferrite magnets and basic materials rather than high-end components. Installation is straightforward in standard 6×8 openings but may require adapters or minor orientation changes depending on Scion tC mounting points. If you want an affordable, no-frills upgrade that improves clarity and loudness, these are a sensible choice.
Best for: Balanced buyers seeking an affordable, stock-style speaker upgrade for everyday listening who prioritize clearer vocals and better overall volume from the Scion tC without adding amplification.
Less Ideal for: Audiophiles seeking deep bass or competition-level fidelity and drivers who plan to run high-powered amplification should consider higher-end components instead.
- Includes two pairs and basic pigtail leads and screws so you get everything needed for a standard replacement install.
- High sensitivity (92 dB) makes them easy to drive with a factory head unit for louder, clearer mids and highs.
- 3-way design improves vocal clarity and high-frequency detail compared with many stock Scion tC speakers.
- Low RMS power per speaker (35 W) limits clean loudness headroom without an amplifier.
- Modest bass extension so deep low frequencies require a separate subwoofer for impact.
- Materials and ferrite magnets reflect budget construction and may not match longevity of premium replacements.
Verdict A cost-effective 6×8 replacement that improves clarity and loudness in a Scion tC but needs a sub or amp for stronger bass and high-volume headroom.
Choosing the Right Scion tC 6X8 Speakers: Key Factors to Consider
Physical Fit and Mounting Depth
Confirming the speakers will physically fit the Scion tC is the first step. Mounting depth and frame diameter determine whether a speaker can be installed without trimming panels or fabricating adapters. If depth is too great you may need spacer rings or a cut, which increases labor and the risk of an imperfect seal.
Mounting hole pattern and flange size also affect how securely the speaker attaches and whether the grille or door panel clears the driver. Choosing speakers designed for common 6×8 mounting patterns reduces surprises during installation and preserves factory aesthetics.
Power Handling and Amplifier Matching
Power handling tells you how much continuous power a speaker can accept before risking damage. Look at RMS (continuous) ratings rather than peak values to match the speaker to the available amplifier or head unit output. Underpowering can mean limited dynamic range while overpowering can cause distortion or damage.
If you plan to use an aftermarket amplifier, pick speakers with RMS ratings that align with the amp’s recommended power per channel. For head-unit-only setups, higher sensitivity may be more important than high power handling because it yields louder output from limited wattage.
Sensitivity and Real-World Loudness
Sensitivity measures how efficiently a speaker converts power into sound, typically shown in decibels at 1 watt/1 meter. A higher sensitivity speaker will generally play louder than a lower sensitivity model at the same power level. This is particularly important when you are not adding an external amplifier.
Bear in mind that sensitivity is only one part of perceived loudness; enclosure, cabin acoustics, and frequency balance also matter. For noisy driving conditions, prioritize higher sensitivity to maintain clarity without clipping the source unit.
Frequency Response and Tonal Balance
The frequency response spec indicates the range a speaker can reproduce, which affects how full and balanced your system sounds. Good 6×8 speakers should cover midrange frequencies cleanly and extend low enough to provide usable bass, or pair with a subwoofer if deep bass is a priority.
Also consider how the speaker’s voicing aligns with your listening preferences. Some speakers emphasize mid-bass for punch, others favor midrange clarity for vocals. Choose based on whether you prioritize bass impact, vocal presence, or a neutral presentation.
Speaker Configuration: Coaxial Vs Component
Coaxial 6×8 speakers integrate tweeters into the same assembly, offering simpler installation and better value for a straightforward upgrade. They are often ideal when space and wiring simplicity are priorities.
Component setups separate tweeters and crossovers from the woofer, allowing more precise imaging and better dispersion when installed correctly. Components require additional mounting locations for tweeters and routing for crossovers, so factor installation complexity and placement flexibility when deciding between the two.
Durability and Materials
Materials influence longevity and sound character. Stiffer cones tend to improve transient response, while robust surrounds resist degradation from heat and humidity. Look for durable basket construction and corrosion-resistant terminals if the vehicle is used in varied climates.
Quality crossovers and tweeter housings also affect long-term reliability. Weather-resistant designs or treated components can extend life in a car environment where temperatures and moisture can vary widely.
FAQ
Will any 6×8 speaker fit the Scion tC door openings?
Not every 6×8 speaker fits exactly the same. While the Scion tC uses a common 6×8 footprint, mounting depth, flange diameter, and mounting hole pattern vary between models. Check the speaker’s mounting depth and hole pattern against the vehicle’s measurements before purchasing to avoid modifications.
Do I need an amplifier for 6×8 speakers in a Scion tC?
It depends on your goals and the speakers’ sensitivity. For modest upgrades, the factory head unit can power higher-sensitivity speakers adequately. If you want louder, cleaner sound or plan to use lower-sensitivity, high-power speakers, adding an external amplifier is usually beneficial.
Are coaxial 6×8 speakers a good choice for door installs?
Yes, coaxial 6×8 speakers are commonly used for door installations because they combine the woofer and tweeter in one unit, simplifying wiring and mounting. They are a practical choice when you have limited mounting locations for separate tweeters.
How do I ensure good bass from a 6×8 speaker in the Scion tC?
Bass performance depends on speaker xmax, cone design, and cabinet coupling in the door. Proper sealing between the speaker and the mounting surface helps preserve low-frequency output. If deep bass is important, pairing the speakers with a dedicated subwoofer will reliably extend low-end performance.
What installation details should I check before buying replacement 6×8 speakers?
Measure mounting depth, cutout diameter, and mounting hole spacing before buying. Also confirm whether mounting adapters, spacers, or grilles are required. Verify connector type to avoid extra crimping or splicing during installation.
How We Chose the Best Scion tC 6X8 Speakers
We focused on products that fit the Scion tC’s factory 6×8 mounting locations and that offer a clear path to successful installation. Selection prioritized measurable performance attributes such as continuous power handling, sensitivity rating, and frequency range to estimate loudness and tonal balance. Build quality factors included cone materials, surround durability, and basket design to assess long-term reliability in a vehicle cabin environment. We also considered installation features such as mounting depth, adapter compatibility, and included hardware to reduce modification needs. Finally, we evaluated whether speakers were available in coaxial or component configurations to suit different audio upgrade approaches. Excluded from this list were speakers that require extensive custom fabrication, incompatible mounting dimensions, or parts intended only for professional installations beyond typical owner upgrades.
Our full evaluation process is outlined in our review methodology.
Conclusion
When choosing Scion tC 6×8 speakers, prioritize fitment and mounting depth first to avoid modification work. Next, balance power handling and sensitivity based on whether you will use the factory head unit or add an amplifier. Also weigh configuration and materials against your installation tolerance and listening preferences. Following these criteria will help you pick a reliable 6×8 upgrade that delivers clearer sound and a satisfying driving-listening experience.
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