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  3. AT-28a PRO (B-stock)
DD Audio AT-28a PRO (B-stock) Dome Tweeter
50 Watt
DD Audio

AT-28a PRO (B-stock)

Dome Tweeter

Technical Highlights

  • Power: 125 watts max, 50 watts RMS, impedance: 4 ohms.
  • Frequency response: 1500 25kHz, neodymium motor, SPL: 91.2 dB.
  • Silk fiber dome: 1.1", copper-coated voice coil, Fs: 675.
  • More technical details
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€100,24
-30% €143,20 €100,24
5% discount with prepayment
inkl. VAT , possibly plus shipping
Only a few left in stock (1 pieces available)
In stock
Apr 11, - Apr 12,
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€100,24
€143,20 €100,24

AT-28a PRO (B-stock) by DD Audio

The AT-28a PRO from DD Audio is a Dome Tweeter offered as B-stock due to packaging damage or cosmetic defects while fully functional. It features a 1.1-inch natural silk fiber dome and a voice coil former made of a titanium alloy. The voice coil is made of copper-coated aluminum ribbon wire and is powered by a neodymium motor. The system has a tuned rear chamber with two compartments and a laser-engraved back plate. The power handling is 50 watts RMS and 125 watts maximum. The frequency response covers the range from 1500 Hz to 25 kHz with an impedance of 4 ohms.

Features
  • Dome Tweeter
  • 1.1-inch natural silk fiber dome
  • Voice coil former made of titanium alloy
  • Voice coil made of copper-coated aluminum ribbon wire
  • Neodymium motor
  • Tuned rear chamber with two compartments
  • Laser-engraved back plate
  • Gold-plated screw terminals
  • Smooth frequency response from 3 kHz to 25 kHz
  • Power handling: 50 watts RMS
  • Power handling: 125 watts MAX
Technical Specifications
  • Speaker size: 28 mm
  • Impedance: 4 ohms
  • Frequency response: 1500 Hz - 25 kHz
  • Resonance frequency (Fs): 675 Hz
  • Sensitivity (SPL): 91.2 dB
  • Mounting diameter: 40.6 mm
  • Mounting depth: 17 mm

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Frequently Asked Questions about AT-28a PRO (B-stock)

What materials are used in the AT-28a PRO Tweeter?

The AT-28a PRO Tweeter from DD Audio features a 1.1" natural silk dome that provides a clear and smooth sound. The voice coil is made of copper-coated aluminum ribbon wire, which offers excellent conductivity and low mass to facilitate quick movements. The voice coil former is made from a titanium alloy, enhancing durability and thermal resistance. This choice of materials ensures the ideal combination of sound quality and longevity, making this tweeter particularly suitable for demanding audio applications.

What is the frequency range of the AT-28a PRO from DD Audio?

The frequency range of the AT-28a PRO from DD Audio extends from 3kHz to 25kHz. This wide frequency range allows for detailed and clear reproduction of high frequencies, which is especially beneficial in complex audio environments. The tuned neodymium motor technology and the specially designed rear chamber with two compartments help keep the frequency response of the tweeter smooth and distortion-free. This makes the AT-28a PRO particularly suitable for Hi-Fi audio systems that aim for precise and comprehensive music reproduction.

What impedance does the AT-28a PRO Tweeter have?

The AT-28a PRO Tweeter has an impedance of 4 Ohms, making it compatible with most common Amplifiers in vehicle and home settings. The impedance affects how the speaker interacts with the amplifier, and a standard of 4 Ohms is widely used, allowing for easy integration into existing systems. Additionally, the specific impedance value ensures that the tweeter operates efficiently, providing a balanced and powerful sound that covers the entire audio spectrum.

What power can the AT-28a PRO from DD Audio handle?

The AT-28a PRO from DD Audio has a maximum power handling of 125 watts and an RMS rating of 50 watts. These power values mean that the tweeter is capable of delivering impressive audio performance both in everyday use and at higher volumes. The maximum rating indicates how much power the speaker can handle in the short term, while the RMS specification describes the continuous power that can be handled without damage. This ensures reliable and dynamic audio playback.

How does the neodymium motor technology of the AT-28a PRO affect performance?

The neodymium motor technology of the AT-28a PRO provides a very compact and powerful motor structure that delivers efficient magnetic forces to precisely move the dome diaphragm. Neodymium is an extremely strong magnet that generates high magnetic fields at a lower volume, allowing for smaller and lighter designs. This improves the speaker's response speed, resulting in a clearer and cleaner sound profile, ideal for the precise reproduction of higher frequency ranges, ensuring great clarity and detail in audio playback.

What is special about the rear cavity of the DD Audio AT-28a PRO?

The rear cavity of the DD Audio AT-28a PRO is tuned to a two-chamber system that helps smooth the frequency response and minimize resonances. This special design allows for better control over the acoustic performance of the tweeter, as it optimally directs the air movements behind the dome. This leads to improved sound quality with less distortion in the upper frequency range. Such tuning is crucial for high-quality audio playback to ensure a precise and clear sound profile with an uncolored bass range.

How are the connections secured on the AT-28a PRO?

The connections on the AT-28a PRO from DD Audio are equipped with gold-plated screw terminals that ensure optimal conductivity and corrosion resistance. Gold plating is known for its excellent anti-oxidative properties, thus guaranteeing a permanently lossless signal transmission. Especially in demanding audio solutions, where connection stability is crucial, these high-quality terminals provide the assurance that there will be no loss of power or disruption of the audio flow. Easy connection and long-term reliability make this solution particularly user-friendly and effective in use in complex systems.

What are the installation dimensions of the Tweeter AT-28a PRO?

The Tweeter AT-28a PRO from DD Audio has an installation diameter of 40.6 mm and an installation depth of 17 mm. These dimensions are particularly relevant when it comes to integrating the tweeter into existing speaker systems or vehicle setups. The shallow installation depth offers flexibility, as it can be used in various surfaces and aircraft. The reduced depth allows for easy installation even in tight spaces without compromising sound quality. Be sure to consider these dimensions when planning the installation to ensure the right fit.

What is the efficiency of the DD Audio AT-28a PRO?

The efficiency of the AT-28a PRO Tweeter is 91.2 dB. This means that this speaker produces a considerable volume at a defined power level, making it particularly efficient in converting electrical energy into acoustic energy. A high efficiency is crucial for maximizing volume without the need for high power amplification. This is advantageous for audio systems, as it allows for clear and powerful sound even with low amplifier controls, which is essential for overall efficiency and recording quality.

What special design features does the AT-28a PRO from DD Audio have?

The AT-28a PRO from DD Audio is characterized by several special design features, such as the laser-engraved back panel, which is not only aesthetically pleasing but also provides a durable and unique surface. This engraving technique ensures precise and sharp contour representation, highlighting the premium quality of the tweeter. Along with the high-quality materials and sophisticated neodymium motor technology, this detail serves as further proof of the high-quality engineering and meticulous craftsmanship that has gone into every detail of the AT-28a PRO.

Manufacturer information / responsible person

Audio Import Group
Pekka Kinnunen
Palkkitie 10
84100 Ylivieska
Finland

Contact: info@audioimport.fi

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