JBL Stage3 48F 4" 2-Way Coaxial Car Speakers

Product Overview

The JBL Stage3 48F 4" 2-Way Coaxial Car Speakers bring clearer highs and more controlled bass to a compact factory speaker location. Their 10% glass-fiber-reinforced Plus One™ cone, PEI balanced dome tweeter, and True 4-ohm design suit everyday listening with a factory head unit or aftermarket amplifier.

Key Features & Benefits

• Plus One™ woofer cone: The 10% glass-fiber reinforcement helps reduce cone flex, while the larger effective cone area supports fuller, tighter bass from a 4" speaker.
• True 4-ohm impedance: Designed to draw clean power from compatible factory head units and aftermarket amplifiers.
• 89dB sensitivity: Helps the speakers produce useful output from a head unit or amplifier.
• PEI balanced dome tweeter: Delivers detailed high frequencies for clear sound throughout the cabin.
• 80Hz–20kHz response: Covers midrange and highs; add a subwoofer for deeper bass and full-range system coverage.
• Thoughtful construction: Recycled plastics, PVC-free wiring, and a laser-etched carbon-fiber finish bring practical and visual details to the design.

Technical Specifications

Why Choose This Product?

The Stage3 48F pairs a compact 4" format with a cone design intended to increase effective cone area without upsizing. That makes it a practical option when you want a speaker upgrade for a small factory location. Its frequency response starts at 80Hz, so a subwoofer can provide the deeper bass range in a full-range system.

Installation & Compatibility Notes

The 4" size is commonly used in dash, rear deck, and door locations across many vehicles, including some Honda, Toyota, Mazda, and European models. The speakers are described as a drop-in fit for most factory 4" locations, but check your vehicle's speaker size and fitment before ordering.

For amplified use, the product recommends a 4-channel amplifier rated at 30–60W RMS per channel at 4 ohms. You can also run the speakers from a quality factory head unit. Use 16-gauge or heavier speaker wire for runs over 6 feet.

Frequently Asked Questions

Can I use the JBL Stage3 48F with a factory head unit?

Yes. Its True 4-ohm impedance and 89dB sensitivity are designed to work with factory head units as well as aftermarket amplifiers.

Will these speakers fit my vehicle?

They are 4" speakers, a size commonly found in dash, rear deck, and door locations. Check your vehicle's factory speaker size and mounting fitment before ordering.

Do I need an amplifier?

No. They can run from a quality head unit. For amplified use, the recommendation is a 4-channel amp rated at 30–60W RMS per channel at 4 ohms.

Should I pair them with a subwoofer?

The 80Hz low-frequency response does not cover deep bass on its own. A subwoofer can add the lower frequencies for full-range system coverage.

How does the Stage3 48F compare with the Stage3 58F?

The 48F is a 4" speaker for compact locations; the 58F is 5.25". The source describes both as sharing the Plus One™ glass-fiber cone, PEI dome tweeter, True 4-ohm design, and power handling. It lists the 58F's response down to 55Hz, compared with 80Hz for the 48F.

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