Germany

Founded in December 1982 by Bernhard Mörtl, ATL Lautsprecher GmbH Vertriebsgesellschaft emerged as a strong player in the audio equipment industry. The company initially acquired the inventory of Atlantic Lautsprecher GmbH, where Mörtl previously served as Sales Manager, and entered into a revenue-sharing collaboration with acoustic researcher Hans Deutsch.

Known for its unique technical innovations, ATL's speakers often featured the "Hornresonator," a specialized form of the bass reflex principle. This unique technology allowed air mass at a narrow outlet to act as a membrane, whose vibrations were amplified by a short horn at the reflex opening. Coupled with this was the concept of an "acoustically active crossover," a set of mechanical filters and housing specifications designed to separate frequency ranges effectively.

In 1989, after an initial dip in sales and a halt in new developments from Hans Deutsch, the company rebranded as ATL Elektro-Akustik Vertriebs GmbH, with Klaus Dotter stepping in as the Chief Developer. Dotter's influence led to a transition from the signature Hornresonator to a more conventional bass reflex principle and Scandinavian woofers with PP membranes. The speakers were categorized into a 700 series, with the high-end models known as the "Pro-Line," characterized by their premium finishes and beveled edges.

Through the years, ATL introduced several other lines, including the design-oriented "Avantgarde" and the ultra-slim "Slim-Line" series, which stood out for its narrow front panel and side-mounted woofers. However, despite being Germany's fourth-largest speaker manufacturer at its peak, the company ceased operations in 1994.

While ATL’s original journey concluded, the brand's legacy in innovation and quality remains a fascinating chapter in the history of audio engineering. The mark ATL left on the industry, from its unique Hornresonator to its collaboration with prominent figures like Hans Deutsch and Klaus Dotter, makes it an indelible part of audiophile lore.

The ATL HD 311 is an advanced speaker model designed for high-quality sound reproduction. It features a compact design that makes it suitable for various settings, including home audio systems and professional environments. The speaker is equipped with a dynamic driver configuration that enhances audio clarity across a wide frequency range. Notably, the ATL HD 311 incorporates advanced materials in its construction, contributing to improved sound insulation and durability.

Specifications may include a frequency response range that optimally covers both low and high frequencies, delivering a balanced sound profile. The power handling capability allows it to produce loud sound while maintaining clarity without distortion. It might also support various connectivity options, making it versatile for different audio setups. The design typically emphasizes user-friendly features, such as easy mounting or placement options, allowing users to maximize their sound experience regardless of the environment.

Additionally, the ATL HD 311 might come with customizable settings or response adjustments to cater to individual preferences, providing a tailored listening experience. Overall, it stands as a solid choice for audio enthusiasts looking for high performance in a compact design.

HD 311

by ATL

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