JBL Stage3 58 5.25" 2-Way Coaxial Car Speakers (Pair)

Next-Generation Concert Precision Formulated for High-Output 5.25-Inch Factory Speaker Overhauls.

The JBL Stage3 58 (including the standard Stage3 58 and factory-upgrade Stage3 Gen2 58F variants) is a high-efficiency 5-1/4" (130mm) 2-Way Coaxial Car Speaker system precision-engineered to inject studio-grade clarity directly into your daily drive. Anchored by HARMAN’s patented Plus One polypropylene woofer cone architecture and clear PEI balanced dome tweeters, this compact duo maximizes every available watt of power from a factory head unit or aftermarket amplifier without breaking into harsh distortion. With rugged, environment-tested materials and an optimized low-profile layout, the Stage3 58 delivers punchy mid-bass tracking, natural vocal presence, and reliable performance across standard 130mm mounting slots.

• Patented Plus One Woofer Architecture: Utilizes a signature polypropylene cone geometry that expands total surface area by up to 35% compared to standard speakers, drastically increasing sensitivity and low-frequency mid-bass presence.
• Smooth PEI Balanced Dome Tweeters: Outfitted with high-quality polyetherimide (PEI) balanced dome tweeters that handle high frequencies flawlessly, delivering wide spatial imaging free from ear fatigue or harshness.
• Laser-Etched Glass-Fiber Injection: Features a high-rigidity cone matrix reinforced with 10% glass fiber to manage transient snaps smoothly. The laser-etched mold creates a sleek forged carbon fiber aesthetic.
• True 4-Ohm Efficiency Engine: Built with high-output low-DCR internal logic that acts as a true 4-ohm load at the terminals to compensate for thin factory wiring and extract premium energy from standard car stereos.
• Eco-Conscious Component Design: Incorporates post-consumer recycled plastic composites, PVC-free internal wiring, and sustainable soy-ink packaging as part of JBL's commitment to green engineering.

• Speaker Profile: 5-1/4" (130mm) 2-Way Coaxial Car Audio Transducers (Pair)
• Woofer Core Technology: Patented Plus One™ Polypropylene Cone with 10% Glass Fiber Reinforcement
• Tweeter Core Technology: 3/4" (19mm) PEI Balanced Dome Tweeter
• Continuous Power Handling: 60 Watts RMS per side (120 Watts total system continuous load)
• Peak Power Handling Capability: 480 Watts Peak per side (960 Watts total system peak threshold)
• Nominal System Impedance: 4 Ohms (True 4-ohm technology)
• Sensitivity Rating: 89 dB (@ 2.83V/1m)
• Frequency Response Profile: 55 Hz - 20 kHz
• Grille Configuration: Available in Standard (Includes sculpted mesh grilles) and **F-Series** (Frontless factory fitment without outer grilles for stealth behind-panel mounting).
• Power Configuration: 100% Passive Car Loudspeaker System (Driven directly by vehicle head unit or external amplifier; requires no standalone mains line power)
• What's in the Box:
  • 2 x JBL Stage3 58 / 58F 2-Way Coaxial Speakers
  • 2 x Sculpted Protective Outer Grilles (Included with base *58* model; omitted on *58F* variant)
  • 2 x Sound-Sealing Foam Gaskets
  • 8 x High-Security Vehicle Mounting Screws
  • 8 x Mechanical Speed/Spade Metal Mounting Clips
  • 2 x Adhesive JBL Logo Metal Badges
  • 1 x Mini Owner's Installation Manual