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Car Audio
JBL  |  SKU: JBLSPKS338F
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JBL Stage3 38F 3.5" 2-Way Coaxial Car Speakers

Sale price $59.99 Regular price $71.99
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Key features

  • Speaker size: 3.5″
  • RMS power per speaker: 50 W
  • Speaker impedance: 4.0 ohms
  • Frequency response: 90 Hz–20 kHz
  • Sensitivity (2.83 V): 88 dB
  • Tweeter: PEI balanced dome


Description

Product Overview

Bring clearer highs and fuller midrange to a compact factory speaker location with the JBL Stage3 38F 3.5-inch 2-way coaxial car speakers. Their 10% glass-fiber reinforced Plus One™ cone and True 4-ohm design deliver a distinct combination of cone stiffness and amplifier-friendly impedance in a 3.5-inch speaker.

Key Features & Benefits

  • Plus One™ cone: Its 10% glass-fiber reinforcement helps control cone flex for tighter bass and more accurate midrange.
  • PEI balanced dome tweeter: Adds smooth, detailed high-frequency sound.
  • True 4-ohm impedance: Designed to work with factory head units and aftermarket amplifiers.
  • 88dB sensitivity: Supports solid output from a head unit or amplifier.
  • Recycled materials: Post-consumer recycled plastics and PVC-free wiring are part of its construction.

Technical Specifications

Specification Value
Brand JBL
Model STAGE3 38F
Configuration 2-Way Coaxial
Speaker Size 3.5" (89mm)
Power Handling (RMS) 50W
Power Handling (Peak) 400W
Sensitivity (@ 2.83V/1m) 88dB
Frequency Response 90Hz – 20kHz
Nominal Impedance 4 ohms (True 4-Ohm)
Woofer Cone Material Plus One™ Glass-Fiber Reinforced (10%)
Tweeter Type PEI Balanced Dome
Construction Post-Consumer Recycled Plastics, PVC-Free Wiring
Weight 0.9 kg

Why Choose This Product?

The Stage3 38F pairs its compact 3.5-inch format with a reinforced cone and 50W RMS power handling. That makes it a considered factory-speaker upgrade when you want JBL coaxial sound without moving to a larger speaker size.

Its 90Hz–20kHz frequency response covers midrange and high frequencies. For fuller system coverage, pair the speakers with a subwoofer to handle lower bass.

Installation & Compatibility Notes

These speakers are designed for factory 3.5-inch locations, commonly found in dash, rear-deck, and door positions. They are a drop-in fit in most vehicles, though fitment depends on the vehicle and speaker location.

Run them from a quality head unit or pair them with a 4-channel amplifier rated 30–60W RMS per channel at 4 ohms. For speaker-wire runs over 6 feet, the supplied guidance recommends 16-gauge or heavier wire.

Frequently Asked Questions

Can I run the JBL Stage3 38F from a factory head unit?

Yes. Its True 4-ohm impedance and 88dB sensitivity are suited to use with a factory head unit.

What amplifier rating is recommended?

The recommended pairing is a 4-channel amplifier rated 30–60W RMS per channel at 4 ohms.

Will these speakers provide deep bass on their own?

Their frequency response starts at 90Hz. A subwoofer is recommended for fuller system coverage, including lower bass.

Will they fit my vehicle?

They are designed for factory 3.5-inch speaker locations and fit most such locations. Check your vehicle’s speaker size and mounting location before ordering.

Explore More

Shop the JBL Stage3 38F at 12 Volt Outlet. Want to learn more about JBL? Explore our JBL brand profile.

Need an amplifier to run these speakers?

Compare car-audio amplifiers by channel count. Ratings shown at 4 Ω. Check your speakers’ impedance and RMS power before choosing an amplifier.

2-Channel Amplifiers

50–125W RMS per channel at 4 Ω

4-Channel Amplifiers

50–125W RMS per channel at 4 Ω

6-Channel Amplifiers

Actual 4 Ω ratings shown for each amplifier

8-Channel Amplifiers

Actual 4 Ω ratings shown for each amplifier

Product Details