Custom Event Setup

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    The ESB 3.9 Midrange delivers smooth, accurate mid frequencies ideal for high-fidelity 3-way systems or mid / high bands in compact component setups. With its compact size, high sensitivity, and premium build quality, it is well-suited for environments where space is limited but performance cannot be compromised.

    Specifications / Features:
    • Model: 3.9
    • Type: 3.5-inch (90 mm) Midrange driver
    • Nominal Impedance: 4 Ω
    • RMS Power Handling: 90 W
    • Peak / Transient Power: 180 W
    • Frequency Response: 100 Hz – 20,000 Hz
    • Sensitivity: 91 dB @ 2.83 V / 1 m

    Construction / Design Highlights:
    • Magnet System: Compact neodymium motor for strong magnetic flux and lower mass
    • Voice Coil: Aluminum wound on a Nomex or equivalent heat-resistant former
    • Spider: Balanced spider structure for stable linear motion
    • Cone Material: Rigid composite or treated pulp for tonal neutrality and stiffness
    • Surround: Rubber surround for reliable excursion and damping
    • Basket / Frame: Die-cast aluminum with open structure to reduce airflow restrictions
    • Cooling / Venting: Rear pole venting to enhance thermal management
    • Terminals: Gold-plated connectors for low resistance and secure connection

    Mechanical Specifications:
    • Nominal Diameter: 3.5″ (90 mm)
    • Mounting Depth: ~1.9″ (48 mm)
    • Cutout Diameter: ~3.38″ (86 mm)
    • Overall Diameter: ~3.7″ (94 mm)
    • Weight: Approx. 1.1 lb (0.5 kg)