ESB Audio 3.90 3.5"/90 mm Cone Midrange (pair)

Main Features

• ABS basket reinforced with fiberglass. The basket has been engineered to obtain the maximum in terms of torsional rigidity (resistance to bending), but at the same time, offers the minimum resistance to air passage.
  
• Pressed paper cone with waterproof treatment. It is widely recognized that cones made of paper are the ideal marriage between lightness, stiffness and the ability of the cone to dampen any unwanted vibration (read: distortion).
  
• Twin symmetrical wave rubber surround. The Perbunan® rubber edge is much more stable with temperature changes than standard rubber.
  
• The 20 mm voice coil uses an aluminum support with a double layer winding technology of copper wire with an aluminum core.
  
• High grade ferrite magnet, a type of magnet with significantly higher performance than "standard" magnets.

Technical Specifications

• Nominal Impedance: 4 Ohm
  
• Nominal Power Handling: 60 Watt
  
• Transient Power: 120 Watt
  
• Frequency Response: 150 Hz ~ 7 KHz
  
• Sensitivity: 91.5 dB 2.83v/1m