ESB Audio - 8.6K3S 3-Way Speaker System with Squared Tw.

The ESB 8.6K3S system brings the 3-way performance of the K3 series with a square tweeter design—enhancing dispersion or matching aesthetic layouts that favor squared grille or mounting designs. It provides advanced tuning options, wide frequency coverage, and ESB’s signature clarity and musical accuracy for high-end automotive audio installations.

Specifications / Features:
• Model: 8.6K3S
• Type: 3-Way Component Speaker System
• Tweeter: Square-shaped dome tweeter version (“S” variant)
• System Components:
 • Woofer / Middriver (shared component)
 • Mid / UMA (unit mid / high)
 • Square Dome Tweeter

Performance Specs (Approximate / Typical):
• Nominal Impedance: 4 Ω
• Power Handling (RMS): ~160 W
• Peak Power: ~320 W
• Sensitivity: ~89 dB (system average)
• Frequency Response: 45 Hz – 25,000 Hz
• Crossover Frequencies:
 – Woofer to Mid: ~300 – 500 Hz
 – Mid to Tweeter: ~3,500 Hz
• Tweeter Attenuation Levels: 0 / –2 / –4 / –6 dB

Construction Details:
• Woofer / Middriver: rigid cone, progressive spider, optimised motor system
• Tweeter: Torcon® material in a square dome format, with venting & cooling
• Magnetic and motor structure: high flux, optimized for linearity
• Crossover Network: high-quality inductors, polypropylene capacitors, precise filtering