ESB Audio 4.UMA 75mm Midrange + 25mm Tweeter (Pair)

ESB Audio 4.UMA 75mm Midrange + 25mm Tweeter (Pair)

Key Features

• Polymer Laminated Silk Dome (tweeter) with Sonatex™ coating creates the perfect balance of weight, stiffness and self-damping. The catenary curve ensures wide sound dispersion of the tweeter.
• High-grade neodymium magnet. Not all magnets of the same size are equally strong. This high-grade (N-52), high energy magnet offers high resistance to demagnetization and is more than 25% stronger for the same mass than more common lower-grade magnets.
• The acoustic resistance component inside the vent hole helps control and damp the movement of the diaphragm, thus reducing distortion and creating a linear impedance curve for better speaker/amplifier coupling.
• Ultra-low carbon steel alloy pole piece CNC machined with magnetic analysis software (FEM) to create the perfect geometry.
• Long-fiber, unbleached cellulose cone (midrange) with special external treatment, making this material the perfect combination of lightness, stiffness and internal damping. Demanding audiophiles consider cellulose pulp to be the best compromise for a loudspeaker cone that reproduces low and mid frequencies.
• The curved shaped cone improves the performance of this speaker through its unique geometry. The sensitive inner portion of the cone features a steep angle design that aids in its performance. The outer edge is flat and stiffer, producing more potent mid-bass frequencies that radiate evenly throughout the listening environment.
• The voice coil is designed to be very light to easily achieve the highest frequencies while remaining durable enough to handle high power. The copper-clad aluminum wire voice coil is very light and has excellent heat dissipation/capacity. Copper is clad over the aluminum surface, offering an equivalent copper surface area at a fraction of the weight of solid copper wire.
• Injected ABS double chassis. This custom configuration is what has made ESB famous in the car audio world: the UMA unit ("Unità Medio Alta" in Italian). The very close positioning of the mid-range and tweeter acoustic centers makes these two components practically one, facilitating installation in cars where space is tight and separate positioning of these elements would create quite a lot of phase problems.
• High-quality protective stainless-steel grille, with perforations calibrated to act as an acoustic lens, ensuring the radiation of sound on the speaker's axis.