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JBL GX428 (JBLGX428AM) (Like New (Open Box))

210W Peak (70W RMS) 4" GX Series 2 Way Coaxial 2.3-ohm Speakers

JBL
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• 105 watts Peak Each, 35 watts RMS Each
• Soft Dome tweeters with deflector
• Polypropylene Plus One woofer cone material
• Impedance: 2.3 ohm
• Sensitivity: 90 dB

Learn more about the ls-gx428am-u9

We apologize

This item has been discontinued

Description


JBL brand icon

Authorized dealer

Item Condition - Like New (Open Box):

This product works and looks like new. It may have been opened for a visual demo or product video. In some cases there may be signs of an attempt at installation like opened packaging or mounting screw holes used, but there is no real sign of use or wear. Includes all original parts, packaging and accessories (or suitable replacement)

JBL GX428

Designed to fit into 4" factory locations without vehicle modification, the GX428 delivers 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 the 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" GX Series 2-way Coaxial Car Speakers
  • Power Handling:
    • Peak: 210 watts per pair / 105 watts each
    • RMS: 70 watts per pair / 35 watts each
  • Polypropylene cone material
  • Rubber speaker surround
  • Edge Driven Soft Dome Tweeters
  • Plus One woofer cone build
  • Harman-proprietary tweeter deflector for an angled, rotating speaker
  • OEM-level reliability testing
  • Top-mount Depth: 1-7/8"
  • Cutout Dimensions: 3-3/4"
  • Impedance: 2.3 ohm
  • Frequency Response: 75 - 21000 Hz
  • Sensitivity: 90 dB
  • Authorized Internet Dealer
  • MFR #: GX-428
  • 1-year Manufacturer's Warranty

  • Priced Per Pair

Specifications & Details


Speaker Specifications
Series
GX Series
Priced Per
Pair
Number of Speakers
2
Speaker Size
4"
Design
2-way Coaxial
Tweeter Design
Soft Dome
Woofer Composition
Polypropylene
Woofer Surround
Rubber
Peak Power Handling
105 watts
RMS Power Handling
35 watts
Total PEAK Per Pair/Set
210 watts
Total RMS Per Pair/Set
70 watts
Sensitivity
90 dB
Frequency Response
75 - 21000 Hz
Impedance (Per Voice Coil)
2.3 ohm
Shallow Mount Installation
No
Top-Mount Depth (Mounting Depth)
1-7/8"
Bottom-Mount Depth
2-19/32"
Cutout Dimensions
3-3/4"
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:

GX428-2

Weight:

5.00lbs

Internal SKU:

ls-gx428am-u9

Internal Product ID:

208586

Customer Ratings & Reviews


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Modern vehicles often require specific brackets, wiring harnesses, and mounting solutions. A fit guide ensures:

  • You see only parts engineered for your exact vehicle
  • You avoid incompatible radios, speakers, or wiring
  • Installation is smoother, faster, and frustration-free
  • You get the correct accessories the first time

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