ESB Audio 8.6K2 speakers
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ESB Audio 8.6K2 R 2-Way Component Speakers
The 8000 (Ottomila) model series can be considered the direct heir of the now legendary 7000 series for home sound systems. The aim was to restore this exceptional range of loudspeakers using the latest technology and the finest materials available today. And this with regard to the versatility of the installation. The key to the development of this type of system in cars was the maximum use of the unusual musicality of the speakers of the time. With the 8000 series, every detail has been taken care of with the greatest possible care, from the choice of materials, construction and finish of the baskets to the ventilation systems of the magnets and coils. At ESB, they have improved everything that was previously considered impossible and are confident that they have laid the foundation for decades of success to come. Well, judge for yourself. At first glance, the luxurious design with gold-colored metal elements, an aluminum alloy basket, a hardened paper diaphragm for the most realistic sound presentation or top tweeters made of aluminum and copper alloy with a diaphragm made of the exclusive Torcon® material will catch your eye. The completely luxurious package made from a combination of wood and glass will also surprise. In summary, these are uncompromising high-end speakers that will satisfy even the most demanding clients. Two-band and two three-band systems are available, suitable for active connection to an amplifier and a DSP processor. However, there are also high-end crossovers for both types of systems. The designation "R" means round tweeters, there are also square ones with the designation "S".
ESB Audio 8.165 mid-bass speakers
Perhaps the first thing you will immediately notice is the completely exceptional appearance and processing of the mid-bass speakers. The basket made of aluminum alloy is completely machined by CNC numerical control. This makes the basket structure very rigid and with virtually zero tolerances for consistent performance and maximum energy transfer from the voice coil to the diaphragm. And that with an increase in efficiency in the low range and the absence of resonances in the medium and high range. The uncompressed paper diaphragm, as well as the dust cover, represent the best compromise between damping and stiffness for an extremely natural sound without coloration or distortion. The water-repellent treatment is also suitable for applications in harsh environments. A large and high-quality coiled magnet (Y-35) guarantees an excess of energy, thanks to which the peaks of the deflection are easily reproduced from the woofer. Even with high deviations, the coil works quietly and always in its magnetic field. Careful study supported by FEM analysis allowed the metal parts of the magnet to be designed to maximize the flux precisely around the moving coil and to be linear throughout the deflection. Ventilation is ensured by a large opening in the lower part, where its shape reduces the noise from possible turbulence to an inaudible level. Large diameter voice coil uses aluminum support for better temperature dispersion. Furthermore, the entire oscillating coil is exposed to the outside air through large slots in the basket (protected by a dust sponge). With the 8000 series loudspeakers, every detail plays an important role, which is why ESB focused on an exclusive design clamp that accepts cables with a large cross-section.
ESB Audio 8.028 tweeters
Even the beautiful tweeters do not lag behind the mid-bass ones in anything. The body is made of an alloy of aluminum and brass, and it is also completely processed by CNC numerical control. Thanks to this, the structure is very rigid and with practically zero tolerances in favor of performance consistency and maximum linearity of reproduction, without any vibrations and resonances. The 8000 Series tweeters are made of Torcon® exclusive PPS (Polyphenylene Sulfide) non-woven fabric with high performance fiber, which has excellent heat resistance, light weight, excellent self-damping and resonant frequency response above the audible range. The outer suspension is made of the same material, but is additionally covered with a high-loss damping material to eliminate vibrations and resonances. The result is a very soft and transparent tweeter sound with maximum detail. The large diameter 28mm voice coil is the right compromise between the lightness of a classic 25 mm voice coil and the great power control of a 32 mm voice coil. The perfect combination of performance and lightness necessary for a tweeter that must reproduce frequencies linearly and faithfully even beyond the limit of audibility. The coil uses an aluminum pad for better heat dissipation. The oversized high-quality neodymium magnet "O52" guarantees a perfectly linear and constant magnetic flux throughout the entire working range of the tweeter, and guarantees an extremely linear and neutral response at both low and high volumes. A pure copper ring was also added to reduce harmonic distortion. Careful study supported by FEM analysis allowed the metal parts of the magnet to be designed to maximize the flux precisely around the voice coil and to be linear throughout the deflection. Ventilation is provided by a large hole on the bottom protected by a sponge with calibrated holes. This solution also reduces the peak impedance at the resonant frequency, making it easier to connect the tweeter to passive crossovers. The result is a clean, soothing and transparent sound reproduction with high efficiency from 940Hz to 25kHz with high power processing capacity.
About the ESB Audio brand
The history of ESB Audio dates back to 1972, when this Italian brand was officially founded. ESB audio is one of the most famous speaker system manufacturers of the second half of the 19th century, and during their rich history they have launched many innovative technologies and many high-end home audio products that have achieved huge worldwide success. Based on the experience gained, in 1984, ESB engineers began to engage in research aimed at optimizing sound in the automotive environment, and two years later they started the production of the first car speakers. Thanks to the great success, ESB began to focus more and more on the automotive industry and its demanding challenges. Car Audio is becoming a phenomenon of the time, and in 2005 a school focused exclusively on vehicle sound was founded in the city of Aprilia, where ESB is based. It was then that the final decision was made to leave the world of home audio and focus exclusively on vehicle sound systems. Currently, ESB belongs to the Italian company Apex Group together with the American manufacturer of audiophile amplifiers and DSP processors Zapco. In the offer you will find several model lines of speakers, led by the super high-end Diecimila three-way system, which represents probably the best quality and most expensive car speakers on the market today. And that is the main mission of ESB audio. To produce speakers of the highest quality, focused on faithful sound, which will allow the user to reproduce as the interpreter intended. Exactly according to the company's slogan "Just like live".
| Catalog number | ESB 8.6K2 |
| Brand | ESB Audio |
| Links | Official web presentation (English) |
| Speaker typeCoaxial speakers: Coaxial speakers are characterized by a so-called all-in-one design. The tweeter and mid-bass speaker are in one basket. The advantage is simpler assembly, but thanks to the connection or proximity of the bands in one speaker, the sound quality will usually be reduced. As a rule, in the middle of the mid-bass speaker, there is a tweeter whose voice coil works in the second air gap of the common magnetic circuit. The three-way coaxial speaker consists of a mid-bass speaker, a center speaker and a separate tweeter in the front on a special beam. Component Speakers: Component speakers are characterized by a division into individual frequency bands, treble + mid-bass + or. bass band. The individual speakers can be placed completely separately, which results in a better sound and acoustic performance. In the vast majority of cases of component speakers, an external crossover is also supplied, which divides the treble, middle / mid-bass, and into the three-band the bass band or allows setting the decibel level of the tweeter (e.g. +2 dB, 0 dB, -2 dB), steepness (e.g. 6dB/Oct. 12dB/Oct.) or active or bi-amp connection. | Komponentní 2pásmové |
| RMS powerRMS speaker power is the constant power of the entire system, not just one speaker or one side. This is also the performance of continuous use of the speakers. If the RMS power is exceeded for a long time, the speakers may be irreversibly damaged! | 160 W |
| Max. (maximum performancePeak performance , which the speaker can play for a moment (approx. 0.5 s), for example when hitting drums in a song. If the max power is exceeded, the speakers will usually be damaged! | 320 W |
| Sensitivity (SPL 1W/1m)Sensitivity, sensitivity or efficiency of the speaker. Speaker sensitivity is given in decibels (dB) and simply put, the higher the value, the lower the demands on the amplifier's power. This is a defacto rating of how a speaker converts watts to sound. Sensitivity ratings are in noise level measured at 1 meter from the speaker using 1 W (watt of power) or using 2.83 volts at the source at 1 meter. A higher decibel level means the speaker is louder with less power. For every 3 dB increase in sensitivity, the speaker requires half the power to reproduce the same volume. For example, if an 88 dB speaker needs 100 Watts to produce a certain volume, then a speaker with a sensitivity of 91 dB needs only 50 Watts to reach the same volume. | 89 dB |
| ImpedanceImpedance - measurement of electrical resistance. When buying speakers, it is important to make sure that the impedance matches the amplifier or car stereo you are using. Example: A 2 Ohm speaker cannot be connected to an amplifier that is only stable up to 4 Ohms! A 4 Ohm speaker can easily be used with an amplifier that is stable up to 2 Ohms. The most common speaker impedance today is 3 - 4 Ohm. | 4 Ω |
| Frequency rangeThe ability of the speakers to play a signal from the lowest frequency to the highest, or the speaker's ability to faithfully reproduce sound in a specific frequency band. Professionally: In the frequency range from 40 to 16,000 Hz, the vast majority of fundamental and overtones (harmonics) of all musical instruments are found. We are interested in the course of the radiated sound pressure in this range of frequencies when the loudspeaker system is supplied with constant power. We call this course the frequency characteristic, which tells us the level of radiated sound pressure in decibels (dB) depending on the frequency. The frequency characteristic of a speaker or speaker system can be expressed most succinctly with a graph. Mostly, however, the frequency characteristic is indicated by indicating the maximum tolerance of the sound pressure in the given frequency range, e.g. 50 to 15,000 Hz -+ 6 dB. Since the frequency characteristics of loudspeakers and systems in general are quite uneven, some manufacturers do not even specify this maximum tolerance of sound pressure in decibels in their catalogs for reasons of prestige. Data impoverished in this way is unfortunately worthless. What is valid is that the manufacturer offers a speaker system with a frequency range of 30 to 20,000 Hz, if he is worried about stating the maximum unevenness of the sound pressure in this range, because he can have a tolerance of, for example, +- 20 dB. The unevenness or undulation of the frequency curve in good speaker systems for high-quality music performance should not exceed +-3 dB in the 80 to 12,000 Hz band and +-6 dB in the 40 to 16,000 Hz band. Greater unevenness already depletes or emphasizes certain tonal areas, which can cause audible or even disturbing distortion. The proportion between fundamental tones and higher harmonics also changes, thereby changing the color of the sound, and individual musical instruments as well as the entire musical image sound unnatural. | 45 - 25000 Hz |
| The diameter of the mid-bass speakerWe state the diameter of the speaker as the diameter of the entire speaker, not including the mounts, when smaller speakers (87, 100, 130 mm) have extra mounts. Some speakers are oval and there the dimension is given in inches, always the shortest side to the longest side. One inch is approx. 2.5 cm. | 165 mm |
| Installation depth of the mid-bass speakerThe installation depth of the speaker is measured from the bottom edge of the magnet to the bottom edge of the tin, plastic or cast speaker basket, or speaker bearing surfaces. | 68 mm |
| Mid-woofer diaphragm materialThe material that was used for the speaker diaphragm. Don't be afraid of the paper, it surprisingly has a very natural and high-quality sound and, thanks to the surface treatment, it can withstand moisture without any problems. | Tvrzený papír |
| Overall tweeter diameterThe total diameter of the tweeter is given as the diameter of the individual tweeter without the installation houses. | 28 mm |
| Tweeter dome materialThe shell material that was used in the manufacture of the tweeter. | Torcon® |
| Frequency crossover included in the packageThe crossover is an important part of defacto all loudspeakers. A crossover usually contains different resistor values, coil sizes, and capacitor types that fundamentally modify the sound. We describe below what the turnouts are for. Component Speakers: A crossover is part of every quality component speaker system. Its task is to ensure the distribution of frequencies that the amplifier produces in the entire acoustic spectrum of frequencies so that each of the speakers receives only that part of the band that it can optimally play in terms of efficiency and minimal distortion. Coaxial speakers: In most cases, coaxial loudspeakers have a simple crossover (6dB/Oct.) formed by a capacitor at the tweeter. | Ne |
| Cover grids included in the packageOriginal cover grilles in speaker packaging. | Ne |
| Price forIf the price is for a pair, the package always includes 2 pieces of everything, e.g. 2x mid-bass, 2x tweeter and 2x crossover. | Pár |
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