3-Way Speaker System with Crossover

1.1″/28 mm Dome Tweeter

– The carbon fiber reinforced, polymer matrix, composite dome, ensures extraordinary rigidity combined with very low weight.
– The 28 mm aluminum voice coil allows the use of very high power for this kind of component.
– The tweeter uses a very large, vented neodymium motor magnet optimized with computer simulations (FEA) to obtain a greater efficiency and improved linearity all along the voice coil’s excursion. The neodymium magnet is of a high-grade to reduce magnetic loss at elevated temperatures and concentrates more energy in a small space.
– All motor parts are made by CNC process. This gives tighter tolerances and improved performance.
– Great attention was paid to the axial and radial ventilation of the moving coil to ensure high power handling with reduced distortion and increased durability. The axial ventilation holes reduce the compression of the air at the back of the dome with greatly reduced distortion and extended response into lower frequencies.
– A special acoustic resistance helps to control the tweeter Ots. Residual resonances are neutralized by the under-dome, dB Cloth® damping material. This extends the frequency response to the lower limits and reduces harmonic distortion.
– The faceplate can be removed by clips and replaced with an adapter for back side installation.
– For tweeter flush mounting, use the included 4 chrome front screws, or for surface mounting, use the supplied mounting cup.

2″/50 mm Dome Midrange

– The carbon fiber reinforced, polymer matrix, composite dome ensures extraordinary rigidity combined with very low weight.
– The large (50 mm) aluminum voice coil allows the use of much higher power for this kind of component.
– This midrange uses a very large, vented, neodymium motor magnet, optimized with computer simulations (FEA) to obtain a greater efficiency and improved linearity all along the voice coil’s excursion. The neodymium magnet is of a high-grade to reduce magnetic loss at elevated temperature and concentrate more energy in a small space.
– All motor parts are made by CNC process for tighter tolerances and improved performance.
– Great attention was paid to the axial and radial ventilation of the moving coil to ensure high power handling, reduced distortion, and high durability. The axial ventilation holes reduce the compression of the air at the back of the dome for a great reduction in distortion and an extended response into lower frequencies.
– A special acoustic resistance helps to control the midrange Ots. Residual resonances are neutralized by the under-dome dB Cloth® damping material. This extends the frequency response to the lower limits and reduces harmonic distortion.
– The faceplate can be removed and replaced with an adapter for rear mount installation.

6.5″/165 mm Mid-Woofer

– The magnet motor is optimized with FEA simulation to ensure a perfectly symmetrical magnetic flux in both directions of movement of the cone.
– Great attention was paid to the axial and radial ventilation of the moving coil to ensure high power handling, reduced distortion, and increased durability. The stepped back allows a very long cone excursion.
– Metal parts from solid and refined material are CNC machined for maximum magnetic flux linearity and minimum magnetic loss. This reduces distortion at high power levels.
– A pure copper ring is inserted into the magnetic field to reduce harmonic distortion.
– A 25 mm CCAW (Copper Clad Aluminum Wire) double layer voice coil is wound on an aluminum former for exceptional power handling and compression-free reproduction to handle the most demanding musical passages.
– The carbon fiber reinforced, polymer matrix composite, exponential cone ensures an extraordinary rigidity combined with very low weight.
– The eight twin-spoke anti-resonant and self-extinguishing carbon fiber reinforced ABS frame ensures a drastic reduction of the cone’s back reflections. This frame design assures high structural and torsional rigidity. This is necessary for perfect parts alignment and very tight construction tolerances.
– The exclusive ESB designed TSW (Twin Symmetrical Wave) double-wave rubber suspension allows an excursion with perfect progression and linearity. This feature ensures natural low-frequency reproduction at low as well as at high volume.
– The large Conex® spider allows a smooth and gentle run at low excursions, and gently holds the cone at high excursions, thus increasing the useful frequency range.

3-Way Passive Crossover

Passive crossovers are used in 2-way and 3-way speaker systems to electrically channel low tones to the bass loudspeaker, and high notes and overtones to the high frequency speakers. If a passive crossover has to fulfill its function without compromise, it must be able to handle extreme variations in dynamics, the full range of audio frequencies, complex transients, and the varying impedance of a loudspeaker load. ESB passive crossovers are carefully designed to complement the exact characteristics of ESB speakers. Each crossover network circuit controls the signal to the high and low frequency speakers so that smooth acoustic response is maintained through the full audio spectrum. Naturally, such sophisticated engineering demands very close tolerances in production. Ordinary crossovers, for example, often use electrolytic capacitors with tolerances of +/- 20% and metal core inductors. Response through these crossover regions is ragged and characteristics vary from unit to unit. All ESB networks, on the other hand, use only non-inductive polypropylene or mylar dielectric capacitors (not electrolytic units) individually tested to meet ESB’s stringent tolerances. The special inductors used in ESB networks have extremely low insertion loss so that none of the driving power to the speaker system is wasted in the network. To avoid interference between the inductors, they have been installed with a rotation of 90°. This arrangement cancels the interactions. All the resistors used to align the level of the various speakers with each other are of the non-inductive type and their power is greatly over-sized. A switch located on the output side allows the user to adjust the tweeter level on two options according to the distance of the tweeter from the listener (and for the midrange in the 5.6K3 CX). Both the input and output connections are robust, two-way audio connectors with locking screws. They accept cables with gauges up to 4.5 mm (6 AWG). Even the PCB was not left to chance. The thick copper traces limit signal loss