ESB Audio 4.75 - 3" Midrange Speaker (Pair)

Main Features

• Pole piece in very low carbon steel alloy CNC machined with magnetic analysis software (FEM), cold forged from a single piece creating perfect geometry. This generates an extra concentration of magnetic force right in front of the voice coil, localizing the magnetic force where it is needed.
  
• High-Grade Neodymium Magnets. Not all magnets of the same size are equally strong. This high-grade (N-52), high-energy magnet offers a high resistance to demagnetization and is more than 25% stronger with the same mass than the more common lower-grade (N-48) magnets.
  
• Die-Cast Aluminum Alloy basket frame. This structural design offers excellent rigidity and minimal resistance to the movement of the air flow without altering sound quality. The casting of this aluminum basket follows strict procedures that ensure compliance and help maintain consistent casting quality.
  
• CNC machined ultra-low carbon steel alloy plate. This type of manufacturing process ensures perfect flatness, so it rests perfectly on the magnet without detracting from critical magnetic flux.
  
• Large aluminum copper-clad ventilated voice coil capable of withstanding very high power while reproducing music with extreme realism and high dynamics. The copper-clad aluminum wire voice coil is very light and has excellent heat dissipation/capacity.
  
• Long fiber, unbleached cellulose pulp cone with special external treatment which makes this material the perfect combination of lightness, rigidity and internal damping.
  
• Edge mounting made of soft nitrile rubber, UV resistant and independent of temperature variations, to maintain the excellent acoustic characteristics of this speaker for a long time. The special edge design ensures perfect and free forward and backward movement.
  
• High quality protective stainless steel grille.

Specifications

• Nominal impedance: 4 Ohm
  
• Nominal power handling: 100 W
  
• Transient power: 200 W
  
• Frequency response: 140 Hz ~ 12 kHz
  
• Sensitivity: 90.6 dB 2.83 V/1 m