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JBL GX428 Coaxial Car Audio Loudspeaker Set 100MM

Gx428 Jbl Cib Genuine 4 Inch 100mm Coaxial Car Audio Loudspeaker Set Of 2

( Brand: Jbl ), ( Manufacturer Part Number: GX428 ), ( Model: JBL GX428 ), ( Type: Coaxial Speakers ), ( Speaker Size: 4in. ), ( Rms Power: 35w )

Review JBL Cib Genuine Inch 100mm Coaxial Car Audio Loudspeaker Set Of

The JBL GX428 CI 100mm Coaxial Car Audio Loudspeaker Set is an exceptional upgrade for anyone looking to enhance their in-car audio experience. These speakers are designed with JBL's renowned sound quality and technological innovation, ensuring that every note, rhythm, and melody is delivered with precision and clarity.

The GX428 CI speakers are a 2-way design, featuring a 100mm (3.93 inches) Polyplas Dynamic Surround Speaker Cones. These cones are engineered for durability and flexibility, allowing them to produce accurate and balanced sound across a wide frequency range. The speakers also incorporate a 25mm (1 inch) Mylar Dome Tweeter, which handles the high frequencies with utmost finesse. This tweeter's lightweight and rigid construction ensures excellent detail and clarity, resulting in a truly dynamic and engaging listening experience.

These speakers are designed as Component-Integrated (CI) systems, which means they can be installed in various locations within a vehicle. They can be used as full-range speakers when installed in the doors or as component systems when the tweeters are mounted separately, typically in the A-pillars or the Tweeter Proximity Pods. This flexibility allows users to customize their sound to their specific preferences and vehicle setup.

The JBL GX428 CI speakers are built to withstand the rigors of automotive use. They feature a robust, waterproof polymer enclosure that protects the internal components from the elements, ensuring long-lasting performance. The speakers also come with mounting hardware and a grille, allowing for a seamless and stylish integration into any vehicle.

These high-performance speakers are a testament to JBL's commitment to delivering superior sound quality in the car audio realm. Their ability to deliver clear, detailed, and powerful sound, coupled with their flexibility and durability, makes them an excellent choice for anyone seeking to elevate their in-car audio experience.

The JBL GX428 CIB 100mm Coaxial Car Audio Loudspeaker Set is a popular choice among car audio enthusiasts due to its high-performance sound and compact design. Here are some pros and cons to help you make an informed decision about purchasing this speaker set:

Pros:

1. High-Performance Sound: The JBL GX428 speakers deliver clear and powerful sound with deep bass. They use a 100mm phenolic-matrix cone, a high-temperature voice coil, and a powerful neodymium magnet to produce high-quality audio.

2. Compact Design: These speakers are designed to fit in compact spaces, making them ideal for use in smaller vehicles or custom installations. They are also available in various mounting configurations, including surface mount and flush mount.

3. Excellent Build Quality: The JBL GX428 speakers are built to last. They have a rugged, weather-resistant design, and their components are engineered to withstand the rigors of the automotive environment.

4. Versatile: These speakers can be used in various applications, including front, rear, and component installations. They are also compatible with a wide range of car audio systems.

Cons:

1. Expensive: The JBL GX428 speakers are more expensive than some other car audio speakers in their class. However, their high-performance sound and rugged build quality justify the extra cost.

2. Complex Installation: Installing these speakers requires some technical knowledge and experience. They are not plug-and-play, and you may need to make some modifications to your vehicle's wiring or mounting structure to get them to fit properly.

3. Limited Frequency Response: The JBL GX428 speakers do not have the widest frequency response range. They are optimized for mid-range and high-frequency sounds, so you may need to add a subwoofer or other low-frequency drivers to get the full range of sound you desire.

Conclusion:

The JBL GX428 CIB 100mm Coaxial Car Audio Loudspeaker Set is an excellent choice for car audio enthusiasts who want high-performance sound and a rugged build quality. While they are more expensive than some other speakers and require a complex installation, their clear and powerful sound and versatile design make them worth the investment.

Recommendation:

If you are looking for a high-performance car audio speaker set that delivers clear and powerful sound, the JBL GX428 CIB 100mm Coaxial Car Audio Loudspeaker Set is an excellent choice. However, be prepared for a complex installation process and a higher price tag than some other speakers in their class. If you are unsure about installing the speakers yourself, consider hiring a professional car audio installer to ensure the best possible results.

Details:

HARMAN-Proprietary Tweeter Deflector - Acting as a wave guide, the tweeter deflector allows for an angled, rotating speaker, which optimizes off-axis sound performance. They show minimal signs of usage with no wear and were kept in clean safe storage. Features: designed to fit into 4 factory locations without vehicle modification, the GX428 delivers high-energy JBL pro sound for applications. Frequency Response Up To 21kHz - Hear what you ve been missing the JBL GX Series offers a frequency response that delivers full-range associated with exceptional sound. Affordable Pricing - The JBL GX Series is designed to give audio enthusiasts more boom for the buck while it maintains a conservative price point, there never compromise in sound.

Because all cars are designed differently, this allows impeccable sound to travel throughout locations in the cabin. That's not the case with JBL. They come complete in original box with everything needed for installation and use.

The result is higher sensitivity, increased low-frequency output and greater overall performance. Edge-Driven Soft Dome Tweeter - Edge-driven dome tweeters provide better power handling than balanced-dome by providing more heat-dissipating surface area in the voice coil. Plus One Woofer Cones - Haman's patented US patent #7,548,631 polypropylene cones provide more overall speaker-cone area than other in its class.

Its not like in a house, where many listening positions must be accommodated. OEM-Level Reliability Testing - JBL tests every speaker design to the same rigid specifications as automakers, subjecting them extreme conditions that would break lesser speakers. The item you are viewing is a CIB Genuine JBL GX428 4 100mm Coaxial Car Audio Loudspeaker Set of Individually Voiced - For most brands, off-the-shelf speakers and a cursory approval of frequency response curves are good enough.

They were installed and used for a few months have been safely stored in their box ever since use.

part #: gx428 prices

  • $59.95-$109.10

specifications classicradiospeakers:

  • brand: Jbl
  • mpn: Gx428
  • model: Jbl Gx428
  • type: Coaxial Speakers
  • speaker size: 4in.
  • rms power: 35w

offer classicradiospeakers:

  • availability: In Stock
  • quantity: 1
  • sold: 0
  • options: Ship-to-home
  • started: April 23, 2026

returns classicradiospeakers:

  • time: 30 Days
  • method: Money back
  • policy: Returns Accepted
  • paid by: Buyer

seller classicradiospeakers:

  • city: Eugene, Oregon
  • rating: 100.0%
  • # reviews: 16913

payments classicradiospeakers:

  • wallet: Apple-pay
  • other
  • credit card: Mastercard

general classicradiospeakers:

  • condition: Used
  • Vehicle Electronics GPS > Car Audio > Car Speakers Speaker Systems

shipping classicradiospeakers:

  • carrier: USPS
  • transit: 4-8 Days
  • service: USPS Ground Advantage
  • type: Calculated
  • class: Standard
  • cost: $0.00
type: coaxial speakers, speaker size: 4in., rms power: 35w,
category: auto parts > vehicle electronics gps > car audio > car speakers speaker systems, sku: 16612286078313722,
Jbl GX428 Is Similar To:
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5 offers $59.95–$109.10 USD
  • New. Offer #1 priced at $59.95 + $0.00 shipping estimate = $59.95* total. Maximum Frequency Response: 21 kilohertz. Woofer Composition: Polypropylene.FREE SHIPPING
  • Open box. Offer #2 priced at $64.00 + $10.60 shipping estimate = $74.60* total. New in box.+$10.60 shipping
  • New. Offer #3 priced at $109.10 + $0.00 shipping estimate = $109.10* total. 4" 2-Way Coaxial Car Audio Speakers.FREE SHIPPING
  • Used. Offer #4 priced at $60.00 + $0.00 shipping estimate = $60.00* total. That s not the case with JBL. The item you are viewing is a(CIB) Genuine JBL 4" (100mm) Coaxial Car Audio Loudspeaker Set of 2.FREE SHIPPING
  • New. Offer #5 priced at $199.95 + $0.00 shipping estimate = $199.95* total. Max Power Handling: 105W/Pair. Model Number: .FREE SHIPPING

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