ESB Audio - 8000 Series - 8.6K3U - 3-Way Speaker System with UMA + Crossover

8.6K3U
3-Way Speaker System with UMA + 8.6K3 CX3-Way Passive Crossover
 
8.165
6.5"/165 mm Mid-Woofer
- The Y35 ferrite magnet motor is optimized with FEA simulation to ensure a perfectly symmetrical magnetic flux in both directions of cone’s run. Motor metal parts are CNC machined from solid, refined material for maximum magnetic flux linearity and minimum magnetic loss. This reduces distortion at high power levels.
- The 32.4 mm double layer voice coil is wound on an aluminum former for exceptional power handling and compression-free reproduction, even for the most demanding musical passages.
- Non pressed cellulose pulp exponential cone with a vinylester resin coating ensures a perfect balance between rigidity, weight, and self-damping. The cellulose pulp guarantees an extremely natural and linear reproduction in all musical passages with an excellent extension at high frequencies without audible break-up. An aluminum dust cup fixed directly on the voice coil former increases and linearizes the extreme top of the bandwidth.
- The CNC (LE model only) aluminum basket ensures a drastic reduction of the cone’s back reflections and a greater torsional rigidity. High structural and torsional rigidity for perfect parts alignment requires very tight tolerances in the construction and assembling system. This results in better efficiency, more power handling and less distortion.
- The exclusive TSW (Twin Symmetrical Wave) rubber surround offers maximum linearity of travel and high reliability in extreme conditions.
- The axial ventilation system ensures high thermal dissipation capacity, power handling and reliability.
- The large Conex™ spider allows a smooth and gentle run at low excursions and gently holds the cone at high excursions, thus increasing its useful range of use.
- The exclusive terminal connection design accepts very large gauge cables.
 
Technical Specifications
- Nominal Impedance: 3 Ohm
- Nominal Power: 160 Watt
- Transient Power: 320 Watt
- Frequency Response: 45 Hz ~ 4 KHz
- Sensitivity: 92 dB 2.83v/1m
 
8.003UMA
2-Way Mid-High Unit
 
- This special and exclusive component driver is a concept conceived way back in 1970's. Its aim is to concentrate midrange and tweeter emissions in a virtual single point. This minimizes phase delays and irregularities at the crossover point.
- All the parts that make up this component have been made with the CNC process. This is a very expensive and time consuming manufacturing process, but ensures perfect geometry and impeccable aesthetics. A mix of precious materials such as brass, stainless steel and Avional aluminum are used together for a unique product.
- Each component uses a very large, vented neodymium motor magnet, optimized with computer simulations (FEA) to obtain a greater efficiency and improve linearity all along the voice coil’s excursion. The neodymium magnet is of a high-grade to eliminate magnetic loss at elevated temperatures and concentrate more force in less space.
- The tweeter uses a Torcon® soft dome, an exclusive Polyphenylene Sulfide (PPS) with a high performance fiber that offers superb heat resistance, low weight and excellent self-damping, to obtain a free resonance frequency response outside the audible frequency range.
- The midrange’s non-pressed cellulose pulp exponential cone, with a Vinylester resin coating, ensures a perfect balance between rigidity, weight, and self-damping. The cellulose pulp guarantees an extremely natural and linear reproduction, with an excellent extension at high frequencies.
- Great attention was given to the ventilation of the two components, through a single axial ventilation on the tweeter and multiple on the midrange. To improve control and damping, an acoustic resistance was adopted on both components.
- Combined, the two components are able to reproduce, with perfect linearity, the entire frequency spectrum from 95 Hz to 25 KHz.
 
 
Technical Specifications
- Nominal Impedance: 4 Ohm
- Nominal Power Handling: 120 Watt
- Transient Power: 240 Watt
- Frequency Response: 95 Hz ~ 25 KHz
- Sensitivity: 94 dB 2.83v/1m
 
8.6K3 CX
3-Way Passive Crossover
 
- This crossover has been specifically designed for the 8000 Series components, in particular, the 8.165/LE woofer, 8075 midrange; 8028/S tweeter; and the 8.003UMA mid-high unit.
- Multi-amplification connection options.
- Aluminum structure machined from solid aluminum with CNC machines.
- Clear acrylic cover for improved ventilation and component protection.
- Gold-plated spacers and screws.
- Gold-plated, large diameter parameter adjustment jumpers for zero resistance and ultra-high load capacity.
- All coils are wound in air to minimize distortion.
- Large diameter coil wire (1.5mm) made from 99.9% pure copper.
- Anti-inductive resistors with dissipating aluminum body, helps to manage very high powers in order to remain relatively cool and maintaining a constant resistance.
- Very high quality bi-metallized capacitors for maximum transparency of details in the medium and high frequencies. To increase the response speed, the tweeter uses a configuration of smaller capacitors in parallel.
- Compact size with a sturdy, 4 screw mounting system.
- 4 tweeter attenuation levels: 0; -2; -4; -6 dB.
- 4 midrange attenuation levels: 0; -3; -6; -9 dB.
- 3 midrange high pass frequencies.
- 2 different cutting slopes for the tweeter and midrange.
- 4 levels of adjustment for the woofer/midrange transition zone.
 
Technical Specifications
- 4 tweeter attenuation levels: 0; -2; -4; -6 dB.
- 4 midrange attenuation levels: 0; -3; -6; -9 dB.
- 3 midrange high pass frequencies.
- 2 different cutting slopes for the tweeter and midrange.
- 4 levels of adjustment for the woofer/midrange transition zone