3. S2-T25

S2-T25

S2-T25

Technical Highlights

  • Impedance 4 Ohm, efficiency 93 dB SPL, frequency range 3,800-25,000 Hz.
  • Recommended power 20-100 W, RMS power handling 50 W, resonant frequency 1,500 Hz.
  • Outer diameter 56 mm, silk dome 25 mm, mounting depth only 15 mm.
  • More technical details
€89.00
€89.00 €89.00
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ProductS2-T25

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AI-Sonic-S2-T25-Kalotten-Hochtöner-masori-kaufen
€89.00
€89.00 €89.00

The S2-T25 from AI-Sonic is a dome Tweeter with a 25 mm silk dome that provides soft and audiophile sound colors. It is ideal for car Hi-Fi and demanding sound solutions. Thanks to a strong neodymium magnet, it offers excellent impulse fidelity and control, while its efficiency of 93 dB SPL allows operation with moderate amplifier power. The frequency range extends from 3,800 to 25,000 Hz, and the compact design allows for flexible mounting, making the tweeter optimal for SQ systems and OEM upgrades.

Features

  • 25 mm silk dome for soft sound colors
  • Strong neodymium magnet for excellent control
  • High efficiency with 93 dB SPL
  • Frequency range from 3,800 to 25,000 Hz
  • Compact design with 15 mm installation depth

Technical Data

  • Dome diameter 25 mm
  • Impedance 4 Ohm
  • Efficiency 93 dB SPL
  • Frequency response 3,800 – 25,000 Hz
  • Recommended power 20 – 100 W
  • RMS power handling 50 W
  • Outer diameter 56 mm
  • Mounting diameter 49 mm
  • Installation depth 15 mm
  • Resonance frequency (Fs) 1,500 Hz

Frequently Asked Questions about S2-T25

How does the S2-T25 Tweeter differ in terms of its frequency response?

This Dome Tweeter covers a spectrum from 3,800 to 25,000 Hz, allowing for precise reproduction of high frequencies. Thanks to its dry impulse behavior, it responds immediately to dynamic transients without distorting in critical passages. With a resonance frequency of 1,500 Hz, there is enough headroom for clean transitions in the crossover range, especially when you use a suitable woofer or Midrange speakers. Its acoustic performance supports a linear frequency response, making even fine details loud and clear. Additionally, the silk diaphragm allows for soft and coloration-free sound reproduction, which ensures a coherent high-frequency representation, especially in demanding car Hi-Fi configurations. This results in a clean treble staging. Even delicate cymbal attacks remain richly detailed.

Does the S2-T25 Dome Tweeter have a recommended amplifier power to accurately represent the tonal colors?

The manufacturer recommends a power range of 20 to 100 W for this model, allowing for flexible adaptation to different amplifier configurations. By staying in the lower range, you can achieve gentle highs at moderate volume, while the upper power window provides sufficient reserves for high levels. The RMS power handling of 50 W ensures stable continuous operation without unwanted distortions creeping in. Especially if you enjoy listening to music loudly, a bit more power will achieve a clearer representation of the high-frequency range. With a high efficiency of 93 dB SPL, impressive sound fullness is also possible with lower amplifier power. Thus, the high frequencies remain controlled.

In which applications can the S2-T25 Silk Dome Tweeter be used thanks to its compact design?

With a mere 15 mm installation depth, this high-frequency driver can be discreetly integrated into various car audio concepts without requiring significant modifications to panels or dashboards. The outer diameter of 56 mm and the mounting diameter of 49 mm make it particularly attractive for environments with limited space, such as in door panels or A-pillars. Even in high-quality tuned sound systems, the compact design creates room for flexible positioning, allowing you to precisely adjust the radiation behavior to your listening position. Supported by the silky membrane and powerful magnet motor, this design combines space-saving with audiophile clarity, offering advantages in many installation scenarios. Additionally, the short height minimizes potential interference with other components.

How does the strong neodymium magnet system of the S2-T25 driver contribute to a dynamic sound?

The compact yet extremely powerful neodymium magnet system efficiently stabilizes the voice coil and supports precise control of the dome, allowing for a quick response and controlled transients even with dynamic music. Especially with sharp snare hits or percussive elements, the high-frequency components gain momentum without hardening the sound image. Instead, a balanced mix of pressure and detail is achieved, as the magnet delivers high power in a small format. By centering the dome and evenly exciting it, you achieve a detailed high-frequency representation with low distortion. This magnet configuration also promotes a linear frequency response, favoring clear overtones and authentic spatial representation.

Does the S2-T25 enable high-frequency resolution without distortion?

Thanks to the sensitive silk membrane and a high efficiency of 93 dB SPL, fine high-frequency components are distinctly highlighted without unwanted artifacts. At the same time, the 25 mm dome supports a wide radiation characteristic, so you are not limited to a narrow listening position and can perceive clear details even in off-axis applications. The uniform excitation across the membrane surface reduces partial vibrations, giving the sound image purity and a lack of harshness. Additionally, the stabilized magnet system prevents excessive cone movements that often lead to distortion. Since the frequency range extends up to 25,000 Hz, all high-frequency components remain clearly discernible, whether fine cymbal sounds or brilliant overheads, which is particularly appealing to audiophile listeners.

What role does the 25 mm silk dome play for detailed highs?

With a 25 mm dome made of soft material, there is a uniform distribution of vibrations, which ensures intensely resolved highs. By keeping the membrane thin enough to capture rapid signal changes, the overtone spectrum remains rich in facets. The S2-T25 model utilizes this dome size to represent even subtle nuances in complex musical pieces, such as delicate hi-hat passages or subtle string overtones. Since the dome offers a relatively large surface area, sound components are finely outlined in the space, without listeners outside the sweet spot experiencing any loss. Additionally, the silk character creates a pleasant, uncolored tonal quality that musically represents the tonally critical high-frequency ranges. Especially in acoustic recording environments, you benefit from this wide spectrum.

How do the 4 Ohm impedance and 93 dB SPL efficiency affect overall performance?

Due to the 4 Ohm impedance, a common car amplifier usually connects optimally, which means no complicated adjustments are necessary during normal operation. For this reason, a solid level can be achieved without needing to use an exotic amp. Furthermore, the 93 dB SPL efficiency allows you to produce a loud high frequency even with moderate power. Particularly in quiet passages, the sound image remains selective, as the membrane responds sensitively to smaller signals. The S2-T25 model combines these parameters to provide you with a dynamic yet controlled high-frequency spectrum in various configurations. This way, you benefit from efficiency, precise resolution, and low power load, covering a wide range of musical genres excellently.

What influence does the installation depth of 15 mm have on placement in the vehicle?

With a mere 15 mm installation depth, there are numerous mounting options, even if your doors or A-pillars are very tight. Since you need to plan less space for the dome, the driver can be positioned closer to the trim, which can bring aesthetic and acoustic advantages. The S2-T25 model supports discreet integration due to this small installation space, without sacrificing audiophile high-frequency quality. The housing can be easily adapted, especially in door mirror caps or tight dashboard areas. Furthermore, the compact design also facilitates use in rather unusual positions, giving you more freedom in tuning your car audio system. This saves you valuable time during installation.

What is the significance of the resonance frequency of 1,500 Hz in practical use?

The resonance frequency indicates where the diaphragm vibrates without significant opposing forces, which is relevant for the transition to midrange or bass drivers. If this value is too high, overlaps or gaps in the frequency response can occur. In this case, the 1,500 Hz resonance allows for a clean separation above 3,800 Hz, without inadequately covering frequency ranges. The S2-T25 model benefits from the fact that the Tweeter still has sufficient stability in lower ranges, minimizing distortion. Especially in multi-way systems, you can precisely shape the crossover frequencies. This results in a homogeneous sound image, as the high-frequency component connects exactly to the midrange, enhancing the overall acoustic quality of the music playback. Thus, even delicate vocal brilliance remains intact.

Are there specific installation instructions for steering the frequency response in the car audio environment?

In car audio setups, the orientation of the Tweeter often matters to optimize stereo width and stage representation. Many therefore rely on angle adapters or specific mounting brackets that direct the sound output towards the listener. For this S2-T25 model, it is advisable to consider the distance to the other speakers to reduce phase differences. Due to the relatively flat design, you can align it in A-pillars or mirror triangles, so that the frequencies hit your listening position precisely. A listening test with slightly varied positions is often worthwhile, as small changes in the radiation angle can already have noticeable effects on tonal balance and stage. This way, you achieve vibrant highs without disturbing reflections.

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