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JBL GX6428 (JBLGX6428AM)

240W Peak (80W RMS) 4x6" GX Series 2 Way Coaxial 2.3-ohm Speakers

JBL
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• 120 watts Peak Each, 40 watts RMS Each
• 1" Edge-driven Polypropylene Soft Dome tweeters
• Polypropylene cone material with Plus One woofer cone architecture
• Impedance: 2.3 ohm
• Sensitivity: 91 dB

Learn more about the gx6428am
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List price $99.95
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Description


JBL brand icon

Authorized dealer


JBL GX6428

Designed to fit into most factory locations without vehicle modification, the GX series speakers deliver high-energy JBL pro sound for in vehicle applications. Leveraging our patented Plus One woofer cone with three Ohm voice coil and edge-driven soft-dome tweeter mounted into our all-new proprietary tweeter deflector, all individually voiced to deliver authentic JBL pro sound for your next road trip. To ensure that you get a great performance even with the windows down, the three-ohm voice coil extracts more power from the amplifier, delivering high output and deeper bass.


Product Details:

  • 4" x 6" GX Series 2-way Coaxial Car Speakers
  • Power Handling:
    • Peak: 240 watts per pair / 120 watts each
    • RMS: 80 watts per pair / 40 watts each
  • Polypropylene cone material with Plus One woofer cone architecture
  • Rubber speaker surround
  • 1" Edge-driven Polypropylene Soft Dome tweeters
  • HARMAN-proprietary tweeter deflector
  • OEM-level reliability testing
  • Ferrite magnet motor structure
  • Top-mount Depth: 1-7/8"
  • Cutout Dimensions: 6-5/16 x 4-1/16 
  • Impedance: 2.3 ohm
  • Frequency Response: 75 - 21000 Hz
  • Sensitivity: 91 dB
  • Authorized Internet Dealer
  • MFR #: GX6428
  • 1-year Manufacturer's Warranty

  • Priced Per Pair


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Specifications & Details


Speaker Specifications
Series
GX Series
Priced Per
Pair
Number of Speakers
2
Speaker Size
4" x 6"
Design
2-way Coaxial
Tweeter Design
Soft Dome
Tweeter Size
1"
Tweeter Composition
Polypropylene
Woofer Composition
Polypropylene
Woofer Surround
Rubber
Peak Power Handling
120 watts
RMS Power Handling
40 watts
Total PEAK Per Pair/Set
240 watts
Total RMS Per Pair/Set
80 watts
Sensitivity
91 dB
Frequency Response
75 - 21000 Hz
Impedance (Per Voice Coil)
2.3 ohm
Shallow Mount Installation
No
Magnet Type
Ferrite
Top-Mount Depth (Mounting Depth)
1-7/8"
Bottom-Mount Depth
2-1/4"
Cutout Dimensions
6-5/16 x 4-1/16 
CTA-2031 Compliant
No
General specifications
Marine Certified
No
Hi-Res Certified
No
Color
Black
Illumination
None
Speaker Grilles
No
Includes Damping Kit
without Damping Kit
Compatible vehicle types
Car/Truck/SUV/Van
What is in the box?
Paperwork
Quick start guide
WITB: Speakers
Foam Gasket
Speakers (2)
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

Item Details


Manufacturer:

JBL

Model Number:

GX6428

Weight:

5.00lbs

Internal SKU:

gx6428am

Internal Product ID:

201413

Customer Ratings & Reviews


JBL GX6428 (JBLGX6428AM) thumbnail image

5 star
100%
4 star
0%
3 star
0%
2 star
0%
1 star
0%



Durability
5
Value
5
Features
5
Design
5
Usability
5

Customer Photos & Videos


Customer Reviews

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By Gustavo on September 27, 2024 Checkmark Icon Verified purchase
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1 found this helpful


By Juan on May 6, 2026 Checkmark Icon Verified purchase
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Modern vehicles often require specific brackets, wiring harnesses, and mounting solutions. A fit guide ensures:

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Whether you're replacing a factory stereo or upgrading your entire audio system, the Fit Finder eliminates uncertainty.