JBL GX328 3.5″ (89mm) 2-Way Coaxial Car Speaker 25W RMS / 75W Peak / Harman Signature

Description

The JBL GX328 is engineered to bring clear midrange and high-frequency audio performance into small mounting locations. Built to replace basic factory dashboard drivers, this 3.5-inch (89mm) coaxial speaker system delivers high acoustic clarity, warm vocals, and extended treble response across the upper cabin.

DASHBOARD & DASH-LOCATION FITMENT (3-INCH / 4-INCH LOCATIONS)

• Direct Replacement for 3-Inch Factory Dashboard Speakers: Most modern vehicles featuring factory 3-inch speaker locations inside the upper dashboard can directly upgrade to the JBL GX328. It drops into standard dash recesses to replace flat factory sound with clear vocal stage height.

• Custom Modification Support for 4-Inch Speaker Slots: For vehicles built with 4-inch factory dash or corner speaker cutouts, the JBL GX328 can be cleanly fitted using basic adapter rings or custom bracket modifications.

• Windshield-Height Vocal Elevation: Upgrading dashboard speakers creates an elevated soundstage across the windshield, making vocals and acoustic details clearer for both driver and passenger seats.

  Low-Impedance 2.3-Ohm Architecture

  Designed with a 2.3-ohm low-resistance voice coil, the GX328 draws maximum power from factory stereos and aftermarket head units, ensuring rich output even without an external amplifier.

  Premium HARMAN Sound Tuning

  Each driver set is individually tuned by HARMAN acoustic engineers to deliver smooth frequency transitions, low distortion, and authentic vocal warmth.

  PRODUCT SPECIFICATION INDEX

  Specification Category	Detailed Technical Value
  Brand & Lineage	JBL by HARMAN (GX Series)
  Model Number	GX328
  Speaker Type	3.5″ (89mm) Coaxial Loudspeaker System
  Continuous Power (RMS)	25 Watts RMS (Per Pair)
  Peak Power Handling	75 Watts Max
  Nominal Impedance	2.3 Ohms (High-efficiency power draw)
  Sensitivity (@ 2.83V/1m)	89 dB
  Frequency Response	90 Hz – 21,000 Hz (21 kHz)
  Woofer Cone Technology	Plus One™ Polypropylene Cone
  Tweeter Type	Edge-Driven Soft Dome Tweeter
  Grilles Included	No (Designed for concealed factory dashboard/door locations)

  WHY CHOOSE AYON MOTORS?

  1. 100% Authentic HARMAN/JBL Stock: Genuine products verified with official serial numbers and original security packaging.

  2. OEM Plug-and-Play Adapter Rings: Custom vehicle-specific speaker rings that mount perfectly into factory bolt locations—zero body cutting or structural alteration required.

  3. 100% Pure Copper Wiring: Ultra-low resistance high-purity copper wiring for maximum power transfer, clean conductivity, and long-term signal integrity without corrosion.

  4. Professional Cable Clipping & Wire Management: All wiring is secured cleanly with industrial cable clips and tie-mounts to prevent panel rattling, loose movement, or long-term wire fatigue inside door cavities.

  5. OEM-Grade Harness Cloth Taping: Wiring looms are wrapped in automotive TESA cloth tape to absorb noise/vibrations, protect against friction wear, and provide a clean factory look.

  6. Precision Cabin Audio Tuning: Fine-tuned equalizer and soundstage balance tailored specifically to your vehicle’s interior acoustic layout.