3in Steel Coil / 75.5 ASV Voice coil (D-75.5 H-55 WH-18) Code: 34899255

A 75.5 ASV voice coil is an aluminum-skeleton speaker component featuring a 75.5 mm inner diameter, commonly used for repairing 3-inch woofer and stage bass drivers.

Core Specifications

• Inner Diameter:5 mm (approx. 3 inches)
• Bobbin Material:ASV (Aluminium / White or Black Aluminum former)
• Coil Material:Round copper or black aluminum wire
• Nominal Impedance:Usually 8 Ohms (with DC resistance around 5 to 7 Ohms)
• Winding/Wire Height:Varies by specific build, typically 16 mm to 20.5 mm
• Total Skeleton Height:Ranges from 50 mm to 65 mm depending on excursion needs
• Layers:Commonly 2-layer or 4-layer configurations

Key Applications

• Speaker Repair:Used for rebuilding mid-to-high power woofers and professional stage audio subwoofers.
• Thermal Control:The aluminum (ASV) bobbin helps conduct and dissipate heat away from the winding faster than standard paper formers during heavy bass use.