JBL GX402 4-inch coaxial speaker cone and tweeter delivering crisp highs.
JBL GX402 4-inch coaxial speaker pair shows balanced mids for in-car listening.

JBL

JBL GX402 4-Inch 210W Peak Power 2-Way GX Series Coaxial Car Speakers

High-performance electronics accessories made for confident daily results

$83.76

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Why customers choose Nexoltic

JBL GX402: 4-Inch Coaxial Car Speakers

Upgrade your car audio with the JBL GX402 4-inch coaxial speakers. Designed to fit a wide range of 4-inch mounting spaces, these 2-way speakers handle peak power up to 210 watts per pair (105 watts per speaker) and deliver RMS power of 70 watts per pair (35 watts per speaker). They’re built for compatibility with factory systems and aftermarket setups, offering a balance of clarity and efficiency that can scale with your listening preferences. You’ll notice responsive dynamics without needing a separate amplifier for everyday listening, while higher headroom remains an option if you choose to add amplification later.

Key build and construction

  • Plus One polypropylene cone with a durable rubber surround for stable, linear motion
  • Balanced dome tweeter with 2.3 ohms nominal impedance for efficient highs
  • Compact external diameter 4.125 inches, cutout 3.75 inches, top-mount depth 1.88 inches
  • Wide frequency response from 75 Hz to 21 kHz and sensitivity of 90 dB

Why this matters for your listening experience

  • Clear highs and controlled midrange across genres, from rock to podcasts
  • Broad enough range to handle vocal detail and instrument textures with ease
  • Compatibility with standard car audio systems and optional amplification for extra headroom

Real-world use cases

Imagine city commutes with crisp cymbals and vocal clarity that cuts through road noise; on long highway drives, guitars and synths stay distinct even at higher volumes; in a quiet cabin, subtle details in your favorite tracks emerge at comfortable listening levels. The GX402’s balanced response helps highs stay articulate while mids remain present, enhancing a wide range of music and spoken-word content.

Installation and compatibility notes

The GX402 is designed for straightforward fit in many 4-inch mounting spaces. Check the top-mount depth of 1.88 inches and the cutout diameter of 3.75 inches to ensure a clean install. They can be driven by a capable head unit, and may benefit from an amplifier if you’re aiming for more headroom and dynamic range.

FAQ

Q: What makes the JBL GX402 a good upgrade for a 4-inch speaker install?

A: The GX402 combines a Plus One polypropylene cone, a durable rubber surround, and a balanced dome tweeter for clearer highs and reliable midrange in a compact 4-inch design.

Q: Do these speakers require an external amplifier?

A: They can be driven by a compatible head unit, and may benefit from an amplifier for extra headroom in high-demand playlists.

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