4000
New Speaker Series
ESB’s goal for its new 4000 Series was to push the limits of cost vs. performance. We know of no other car speakers currently on the market at these price points that make use of the same advanced materials or surpasses their remarkable performance. The particularly expensive design of the 3”/75 mm midrange driver and its high-grade, high-energy neodymium magnet guarantees a level of efficiency that supports high sound pressure levels even when paired with low-power factory amplifiers. Even the 4000 Series’ premium matt black steel grilles lend them a more refined aesthetic on par with more expensive speaker systems. They make a bold statement, yet blend harmoniously with just about any car interior. With ESB’s new 4000 Series, never has such quality, clarity, and accuracy been more affordable.
Technology meets Performance
A look inside - Tweeter
• Silk dome with polymer laminated (Sonatex™) creates a perfect balance between weight, rigidity, and self-damping. The catenary curvature ensures wide dispersion of the tweeter.
• Under dome felt damper improves acoustic phase by absorbing reflections from the magnetic structure that bounce through the dome.
• High-grade neodymium magnet. Not all magnets of equal size are equal in strength. This high grade (N-52), high-energy magnet provides a high resistance to demagnetization and is over 25% stronger for the same mass than more common lower grade (N-48) magnets. By utilizing a high-grade magnet, efficiency rises to extraordinary levels resulting in high output but controlled speaker.
• Main body in fiberglass-filled ABS for superior strength.
• Acoustic resistance component inside of the ventilation hole helps to control and dampen dome movement resulting in reduced distortion and a linear impedance curve for improved speaker/amplifier coupling.
• CNC-machined ultra-low carbon alloy steel pole plate. This type of
manufacturing process ensures perfect flatness so it sits perfectly flush over the magnet without reducing any crucial magnetic flux.
• The large aluminum copper-clad vented voice coil can handle very high power while reproducing music with extreme realism and high dynamics. The copper clad aluminum wire voice coil is very lightweight and with excellent heat dissipation/capacity. Copper is coated over an aluminum surface providing equal copper surface area at a fraction of the weight of solid copper wire. The CCAC provides maximum sensitivity and extends the high frequency response of the speaker.
• Deluxe protective stainless-steel grille with perforations calibrated to function as an acoustic lens, guaranteeing the sound emission will be in the on-axis part of the speaker, and also curved to the sides, which is very useful in car installations where speaker placement often results in off-axis listening.
Woofer
• Ultra-low carbon alloy steel pole piece CNC-machined using magnet
analysis software (FEM), cold forged in one-piece creates a perfect geometry. This produces an extra magnet force concentration just in front of the voice coil, focusing the magnetic force where needed.
• Oversized magnet. The high-quality magnet (Y-35) guarantees a surplus of energy that makes the excursion peaks easily reproducible by this woofer. Even at high excursions, the coil works quietly in its magnetic field.
• Die cast aluminum alloy basket frame. This design structure offers great rigidity and minimal resistance to airflow movement without altering sound quality. The casting of this aluminum basket follows strict procedures that ensure compliance with regulatory specifications and help maintain consistent casting quality.
• CNC-machined ultra-low carbon alloy steel pole plate. This type of
manufacturing process ensures perfect flatness so it sits perfectly flush over the magnet without reducing any crucial magnetic flux.
• The large aluminum copper-clad vented voice coil can handle very high power while reproducing music with extreme realism and high dynamics. The copper clad aluminum wire voice coil is very lightweight and with excellent heat dissipation/capacity. Copper is coated over an aluminum surface providing equal copper surface area at a fraction of the weight of solid copper wire. The CCAC provides maximum sensitivity and extends the high frequency response of the speaker.
• Long-fiber, unbleached pulp cone with a special external treatment that makes this material a perfect combination of lightness, rigidity, and internal damping.
• Surround suspension made of soft nitrile rubber, UV-resistant, and unaffected by temperature change so that the superior acoustic qualities of this speaker are preserved long-term. Special edge design ensures perfect and free forward and backward movement.
The UMA Unit
• Silk dome with polymer laminated (Sonatex™) creates a perfect balance between weight, rigidity, and self-damping. The catenary curvature ensures wide dispersion of the tweeter.
• High-grade N52 neodymium magnet.
• An acoustic resistance component inside of the ventilation hole helps to control and dampen dome movement resulting in reduced distortion and a linear impedance curve for improved speaker/amplifier coupling.
• Ultra-low carbon alloy steel pole piece CNC-machined magnet analysissoftware (FEM) to create a perfect geometry.
• Long-fiber, unbleached pulp cone (midrange) with a special external treatment that makes this material a perfect combination of lightness, rigidity, and internal damping.
• The voice coil is designed to be extremely lightweight in order to easily reach the highest frequencies, but at the same time, remain durable enough to handle great power. The copper clad aluminum wire voice coil is very lightweight and with excellent heat dissipation/capacity.
• Injected ABS twin frame. This custom configuration is what has made ESB famous in the automobile audiophile world: the UMA unit ("Unità Medio Alta" in Italian). The extremely close positioning of the midrange and tweeter emission centers make these two components virtually one, facilitating installation in cars where space is tight and the separate position of these drivers would create quite a few phase problems.
• Deluxe protective stainless-steel grille.
Midrange
• Ultra-low carbon alloy steel pole piece CNC-machined using magnet
analysis software (FEM), cold forged in one-piece creates a perfect geometry. This produces an extra magnet force concentration just in front of the voice coil, focusing the magnetic force where needed.
• High-grade N-52 neodymium magnet.
• Die cast aluminum alloy basket frame. This design structure offers great rigidity and minimal resistance to airflow movement without altering sound quality.
• CNC-machined ultra-low carbon alloy steel pole plate.
• The large aluminum copper-clad vented voice coil can handle very high power while reproducing music with extreme realism and high dynamics. The copper clad aluminum wire voice coil is very lightweight and with excellent heat dissipation/capacity.
• Long-fiber, unbleached pulp cone with a special external treatment that makes this material a perfect combination of lightness, rigidity, and internal damping.
• Surround suspension made of soft nitrile rubber, UV-resistant, and unaffected by temperature change so that the superior acoustic qualities of this speaker are preserved long-term. Special edge design ensures perfect and free forward and backward movement.
• Deluxe protective stainless-steel grille
4000 Series - Components
