ESB Audio - 3.6K3 -  3000 Series - 3 way Speaker system  +  3.6K3 HECX   3-Way High End Passive Crossover
 
3.90
3.5"/90 mm Cone Midrange
- 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.
 
Technical Specifications
- Nominal Impedance: 4 Ohm
- Nominal Power Handling: 60 Watt
- Transient Power: 120 Watt
- Frequency Response: 150 Hz ~ 7 KHz
- Sensitivity: 91.5 dB 2.83v/1m
 
3.165
6.5"/165 mm Mid-Woofer
- 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).
- High damping, single wave rubber surround. The Perbunan® rubber edge is much more stable with temperature changes than standard rubber.
- The 25 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.
 
Technical Specifications
- Nominal Impedance: 4 Ohm
- Nominal Power Handling: 120 Watt
- Transient Power: 240 Watt
- Frequency Response: 65 Hz ~ 9 KHz
- Sensitivity: 91.5 dB 2.83v/1m
 
3.28
1.1"/28 mm Dome Tweeter
- The tweeter uses a Torcon® diaphragm for a smooth sound, with an outer suspension covered with a high-loss damping material to eliminate edge vibration and resonance. The dome is of extremely low mass and is much less susceptible to mechanical deformation than other tweeters, yet it provides a smooth, linear and very extended response.
- The 28 mm voice coil has an aluminum support and very light copper-coated aluminum wire. The coil is ventilated and damped with iron-fluid oil.
- The special SVS ventilation design provides two benefits: optimal cooling of the voice coil and avoiding compressing the air at the back of the dome.
- The neodymium N42 magnet, a type of magnet with significantly higher performance than "standard" magnets, is optimized with computer simulations to get better efficiency and improve linearity.
 
Technical Specifications
- Nominal Impedance: 4 Ohm
- Nominal Power Handling: 90 Watt
- Transient Power: 180 Watt
- Frequency Response: 900 Hz ~ 25 KHz
- Sensitivity: 94 dB 2.83v/1m
 
3.6K3 HECX
3-Way High-End 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 to maintain smooth acoustic response throughout the full audio spectrum. The 3.6K3 HECX uses high-grade, separate Alu E-Cap, a high quality aluminum foil capacitor designed specifically for passive crossovers (tweeter and midrange drivers). It utilizes a much thinner dielectric insulation compared to the market standard. The use of a thinner dielectric insulator allows for a cap with less “memory” and that is much faster reacting. Compared to the electrolytic capacitors, the Alu E-Cap brings more brightness and a little more natural top end balance to the audio system. Ideal for those who prefer a slightly brighter sounding system, while also hearing improvements in the overall naturalness/neutrality of the audio system.

- Ultra-thin dielectric insulation to eliminate memory effect in the capacitor.
- Extremely fast reacting capacitor.
- Very low ESR, SEL, inductance and dielectric absorption data.
- High quality aluminum foil wound with highly specialized machinery and precision winding techniques.
- Dedicated for 3.28 tweeter, 3.90 midrange and 3.165 woofer.
- High thickness PCB copper.
- Inside 4 step tweeter level adjustment.
- Oversized, non-inductive ceramic resistors.
- Polyester tweeter capacitor.
 
Technical Specifications
- Cut out Frequency: 350 / 3 KHz
- Crossover Slope: 12 dB/Oct LP, 6-6 dB/Oct BP, 12 dB/Oct HP
- 4-step tw/mid level adjustment
- Low Frequency section: 3.165
- Mid Frequency section: 3.90
- High Frequency section: 3.28