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The JBL Stage3 6427 is a pair of 4x6-inch 2-way coaxial car speakers rated at 35W RMS (175W peak), from JBL's Stage 3 range. With a 3-ohm impedance and 91dB sensitivity, they're designed to deliver more volume from a factory head unit without an amplifier.
The Stage 3 range is also available as the JBL Stage 3 627F 6.5-inch 2-way coaxial speakers if you need a larger fitment.
Key specifications
- Size: 4x6 inch
- Type: 2-way coaxial
- Power handling: 35W RMS, 175W peak
- Sensitivity (2.83V/1m): 91dB
- Frequency response: 75Hz – 20kHz
- Impedance: 3 ohms
- Tweeter: edge-driven dome, 0/+2dB level control
- Sold as: pair
Designed to replace factory speakers
The Stage3 6427 is a straightforward upgrade over standard OEM speakers. The 2-way coaxial design combines woofer and tweeter in a single unit for improved clarity, smoother mids and better high-frequency detail in a compact fitment.
Plus One woofer cone technology
JBL's Plus One polypropylene woofer cone increases cone surface area compared to a standard OEM speaker, improving efficiency and midbass performance. Edge-driven dome tweeters extend high-frequency response for a more balanced overall sound.
High sensitivity for factory head units
At 91dB sensitivity and 3 ohms impedance, the Stage3 6427 extracts more output from a factory head unit — delivering louder, clearer sound without needing a separate amplifier.
Fitment
The 4x6-inch oval size suits vehicles with oval speaker openings in dashboards or doors. Installation is straightforward, making these a practical, no-fuss upgrade.
Explore the full range in JBL Stage.
Specification
| Power Handling | RMS 35 Watts |
|---|---|
| Peak | 175 Watts |
| Impedance | 3 Ohms |
| Sensitivity | (@ 2.83V/1m) 91dB |
| Frequency Response | 75Hz – 20kHz |
More specs
| |
What's Included
- 2 x Speakers
JBL
About the JBL STAGE36427AM
From our tech experts at CEN
JBL 4x6 inch coaxial speakers, with the tweeter in the centre of the woofer, rated at 35w RMS.
Who it suits
Drivers replacing tired factory speakers who want a clear, immediate improvement without complication.
Our tech experts advise
Sizes, adapter rings and harnesses vary by vehicle, year and trim, so we confirm what your car takes before ordering rather than guessing. Door treatment matters as much as the speaker itself. Installation is priced per vehicle, so get in touch with your make, model and year and we will confirm what it needs. See car audio installation.
Explore the full JBL range at CEN, with fast UK dispatch and expert advice from our Nottingham team. Shop all JBL
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Have it Fitted By Our Team
Our team fits car audio, stereos, dash cams and vehicle security at our workshop in Beeston, Nottingham. Tell us your vehicle and we'll confirm the parts and a fitted price.
- 1
Tell us your vehicle
Make, model and year, and what you'd like fitted.
- 2
We confirm the parts
Fascia, wiring and interfaces checked for your car, with a fitted price.
- 3
Fitted at our workshop
Bring it to our Beeston workshop and we do the rest.
Unit 25 Technology Drive, Beeston, Nottingham NG9 1LA
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Frequently Asked Questions
Q: Will these speakers fit my car?
A: Most car speakers are standard sizes, but mounting depth and fitting rings vary by vehicle. Check the size in the Specification tab against your vehicle, or contact CEN with your registration and we will confirm fitment and any adapters or fitting kits you need.
Q: Do I need an amplifier to run these speakers?
A: Not always. Most speakers will run from a standard head unit, but a dedicated amplifier lets them perform at their best, particularly for component sets and higher power handling models. The RMS figure in the Specification tab is the guide to how much clean power they can use.
Q: What is the difference between coaxial and component speakers?
A: Coaxial speakers combine the tweeter and woofer in one unit for a simple like-for-like upgrade. Component sets separate the tweeter and woofer with a crossover for better imaging and detail, and suit installs where sound quality is the priority.
Q: Do these come as a pair?
A: Unless stated otherwise, car speakers are sold in pairs. Check the product title and What's Included tab, which lists exactly what is in the box.
Q: Can CEN fit these speakers for me?
A: Yes. CEN offers professional installation from our Nottingham premises. Contact us to book an installation slot or ask for a fitting quote.
Q: Do I need an amplifier for the JBL Stage3 6427?
A: Not necessarily. The 3 ohm impedance and 91 dB sensitivity help them get more power from a factory head unit, giving louder, clearer sound without an amplifier.
Q: Can I adjust the tweeter level on the Stage3 6427?
A: Yes. It has an external crossover with 0 or +2dB tweeter level control.
Q: Where do 4x6 inch speakers fit?
A: They suit vehicles with 4x6 inch oval speaker openings, typically in the dashboard or doors.
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