Infinity Reference REF687F 5"x7" / 6"x8" Coaxial Speakers

The Infinity Reference REF687F is a 2‑way coaxial speaker designed to fill 5"x7" and 6"x8" openings—common in Ford, Jeep, and Chrysler vehicles—providing a direct upgrade where factory sound is limited by an awkward size. The Plus One+ woofer cone and an adjustable tweeter deliver stronger midbass and smoother high end without a dramatic enclosure change.

• Plus One+ polypropylene woofer cone with hi-roll rubber surround: A larger-than-standard cone for this size moves more air, increasing midbass output and giving a fuller overall sound in daily listening.
• 1" textile edge-driven dome tweeter with 3.0 dB level adjustment: Tweeter output can be dialed to suit mounting location, helping maintain a natural soundstage when the tweet location varies in the vehicle.
• True Four Ohm Impedance Technology: A 3-ohm design combined with vehicle wiring yields a true 4-ohm load, ensuring reliable compatibility with both factory and aftermarket head units.
• Power handling: Handles up to 60W RMS (180W peak), giving you headroom for a balanced system without overdriving the voice coil.
• Frequency response: 49–21,000 Hz delivers solid bass through high treble for a coherent, 2‑way sound across musical content.
• Sensitivity: 93 dB @ 2.83V, indicating efficient performance that can reach satisfying loudness with modest amplification.
• Top-mount depth: 2.32" footprint helps fit into tight door assemblies; grilles are not included.
• What’s in the box: Two 2-way speakers, two adhesive-backed foam gaskets, instruction manual.

Benefits: This pair is ideal for a Ford/Jeep/Chrysler install where factory 5x7/6x8 speakers underperform. The REF687F fits behind most factory grilles, upgrades midbass without a full speaker swap, and provides adjustable tweeter level to restore natural soundstage in vehicles with low mounting locations. Its 4Ω load compatibility and solid RMS rating make it a practical, performance-driven upgrade for automotive audio builds seeking clearer highs, stronger bass presence, and reliable electrical compatibility.