Speakers Hertz ML 280.3
tweeters, Ø 28 mm domes, 180 W, 92 dB (2.83V/1m), 4 Ω
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Tweeters Hertz ML 280.3
Using FEA simulations, the designers conducted extensive research that led to the optimization of the dome geometry of the Tetolon tweeter to minimize distortion. This optimization method resulted in an improved faceplate for better frequency response and even lower distortion. Another element of the tweeter that is important for the sound is the rear acoustic chamber in particular. The designers carried out long-term research into the geometry and the damping material used, achieving a 50% increase in total volume.The main features of the ML 280.3 Legend tweeters
- Neodymium magnet optimized with FEA simulation of magnetic flux to the maximum.
- Extremely pure copper ring.
- Tetolon tweeter dome optimized with FEA simulations for lower distortion and better dispersion in the high frequency band.
- Die-cast aluminum faceplate with a profile optimized using FEA simulations to improve frequency response and sound propagation.
- Frame construction and rear load chamber, both CNC-machined from high-strength aluminum.
- Rear chamber sized only for 900 Hz Fs.
| Catalog number | ML 280.3 |
| Brand | Hertz |
| Links | Official web presentation |
| 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. | High rise |
| 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! | 180 W |
| Sensitivity (SPL 2.83V/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. | 92 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. | 1000 - 28000 Hz |
| Overall tweeter diameterThe total diameter of the tweeter is given as the diameter of the individual tweeter without the installation houses. | 35 mm |
| Tweeter dome diameterThe net diameter of the dome (diaphragm) of the tweeter. | 28 mm |
| The overall depth of the tweeterThe total depth of the tweeter itself without the installation houses. | 13.5 mm |
| Tweeter dome materialThe shell material that was used in the manufacture of the tweeter. | Tetolone |
| Other | Neodymium magnet |
| 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. | Few |
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