ESB 3.90

3.90 PARPRIS The ESB 3000 speaker system was developed and assembled with a great commitment to the research of materials and engineering solutions of the highest level. The baskets have been engineered to obtain maximum torsional rigidity (resistance to bending). The speaker cones use pressed paper with a waterproof treatment which represents an ideal marriage between lightness, stiffness and the ability of the cone to dampen any unwanted vibration. All the woofers are equipped with a Y-35 grade ferrite magnet motor, having significantly higher performance than classic "standard" magnets. - 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. Treated paper cone Perbunan rubber suspension Y-35 ferrite magnet Fiberglass reinforced ABS basket Balanced cotton spider Double layer voice coil Nominal Impedance: 4 Ohm Nominal Power Handling: 60 Watt Transient Power: 120 Watt Freq. Response: 150 Hz ~ 7 KHz Sensitivity: 88.5 dB 1W/1m ​