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 Transmaster is a high-performance loudspeaker designed to deliver accurate sound reproduction with a focus on clarity and detail. Various models may feature advanced driver technology, including specialized woofer designs that enhance bass response while maintaining tonal balance across the frequency range. The cabinet construction typically aims to minimize resonance and distortion, utilizing high-quality materials for durability and acoustic performance. The speaker may also include features such as adjustable crossover points and compatibility with different amplifier configurations to ensure versatility in various audio environments. Users often report a satisfying listening experience, with a presentation that allows for both dynamic range and subtle nuances in music.

Transmaster

The ATL HD 318 is a professional studio monitor designed for accurate sound reproduction in audio production environments. It typically features a bi-amplified design that allows for higher efficiency and lower distortion in sound output. The monitor may come with a 8-inch woofer and a 1-inch tweeter, providing a wide frequency response suitable for various genres of music. The design often includes adjustable settings for room acoustics, allowing users to tailor the sound delivery based on their specific environment. Connectivity options usually consist of XLR and TRS inputs to facilitate integration in different studio setups. Given its intended use, the ATL HD 318 is engineered to deliver clarity and detail, making it ideal for mixing and mastering tasks.

HD 318

The ATL HD 316 is a two-way speaker system designed to deliver high-quality audio performance. It features a 6.5-inch woofer that provides deep bass response and a 1-inch tweeter for clear high-frequency reproduction. The enclosure is typically constructed from MDF (medium-density fiberboard) to minimize resonance and ensure clean sound playback. It is often characterized by its compact design, making it suitable for both home and studio use. The speaker has a frequency response that typically ranges from 40 Hz to 20 kHz, providing a wide sonic range for various listening scenarios. The ATL HD 316 may also incorporate features such as gold-plated binding posts for secure connections and a stylish finish that can complement different interiors. Designed for versatility, these speakers can be used with a variety of amplifiers and receivers, enhancing the overall listening experience across genres.

HD 316

The ATL HD 314 i is a set of studio headphones designed for accurate sound reproduction, making them suitable for both professional audio applications and casual listening. They feature a closed-back design that helps to isolate external noise, allowing for focused listening in various environments. The headphones are equipped with large dynamic drivers that deliver a rich, detailed audio experience across a wide frequency range. Comfort is prioritized with plush ear cushions and an adjustable headband, making them suitable for extended wear during long recording sessions or mixing tasks. The cable is typically detachable for easy replacement, and some versions may include a coiled design to prevent tangles. Overall, these headphones aim to provide reliable sound quality for musicians, audio engineers, and enthusiasts alike.

HD 314 i

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

The ATL HD 308 S is a compact, high-performance loudspeaker designed for optimal sound reproduction in various listening environments. It features a sophisticated design that enhances both aesthetics and audio quality, making it suitable for a range of applications, from professional audio setups to home theaters. The speaker is characterized by its robust build and high-quality materials which contribute to its durability and acoustic performance. It typically includes advanced driver technology, ensuring a wide frequency response and precise sound imaging. The integration of passive radiators helps improve bass response while maintaining clarity and detail across all frequency ranges. Moreover, the ATL HD 308 S often incorporates customizable mounting options, enabling versatile placement in different room layouts.

HD 308 S

The ATL HD 306 S is a compact and versatile loudspeaker designed with performance and aesthetics in mind. It features a sleek cabinet design that allows it to blend well into various environments while delivering impressive sound quality. The speaker typically incorporates a 6.5-inch woofer for deep bass response along with a high-frequency driver that contributes to clear and detailed treble. This model is well suited for both casual listening and professional applications, striking a balance between power handling and sensitivity. The nominal impedance is often 8 ohms, making it compatible with a wide range of amplifiers. Additionally, it is generally equipped with connectors designed to facilitate easy installation and integration into different audio setups.

HD 306 S

The ATL HD 306 is a specific model crafted to deliver high-fidelity audio performance, often utilized in various audio applications, including home stereo systems and professional setups. It features a robust build quality that supports its functionality in a range of environments. The device typically includes advanced technology for signal processing, resulting in clear and powerful sound reproduction. Specifications may include a frequency response range that captures both low-end bass and high-end treble with accuracy, and an output power that is suitable for driving a variety of speakers. The impedance rating is designed to ensure compatibility with a wide range of devices, making it versatile for audiophiles and casual listeners alike. Connectivity options are usually comprehensive, supporting various audio sources to enhance the user experience.

HD 306

The ATL HD 304 S is a high-performance loudspeaker designed for studio and professional audio applications. It features a compact and stylish design suitable for any environment while delivering impressive sound fidelity. The speaker is equipped with a combination of woofer and tweeter drivers that ensure a balanced sound profile across a range of frequencies. The ATL HD 304 S is designed to minimize distortion and deliver clear audio, making it ideal for critical listening and mixing purposes. Built with durable materials, it aims to provide reliability for long-term use.

HD 304 S

The ATL HD 304 is a compact speaker designed for superior sound quality and versatility in various listening environments. It features a 4-inch woofer that delivers a powerful bass response while maintaining clarity in the mid and high frequencies. The speaker is equipped with a tweeter that ensures a detailed and balanced high-frequency output. The ATL HD 304 is constructed with a robust cabinet designed to minimize resonance and enhance sound fidelity. It typically operates within a frequency range of 50Hz to 20kHz, making it suitable for a wide variety of music genres and audio sources. The speaker also offers various connectivity options, including standard binding posts for easy integration into existing audio setups. Its compact design makes it suitable for both home and professional audio environments.

HD 304

The ATL Dell Arte 240 is a high-performance audio speaker designed to deliver exceptional sound clarity and power. Its construction typically features premium materials to ensure durability and optimal acoustic performance. The speaker may include a combination of woofers, mid-range drivers, and tweeters, allowing for a full-range audio experience. Its design often incorporates advanced engineering techniques to minimize distortion and enhance sound imaging, making it suitable for both music listening and home theater applications. The ATL Dell Arte 240 may have a stylish finish, enabling it to fit seamlessly into various home décor styles. Specifications often include a specific frequency response range, impedance rating, and power handling capacity, but exact figures can vary based on the model and year of manufacture. Features such as bass reflex ports or proprietary technology to enhance audio playback might also be present, contributing to its appeal to audio enthusiasts.

Dell arte 240

The ATL DA 220 is an audio device designed for high-performance sound reproduction. It features a robust and sleek chassis that is built to minimize resonance and interference. The device typically includes a variety of inputs, allowing for compatibility with various audio sources. The DA 220 is known for its clear audio output, providing a detailed soundstage and accurate audio representation. In terms of specifications, it may include power ratings that suit a range of audio applications, and may support different sampling rates and bit depths for digital inputs. The design often emphasizes ease of use, with intuitive controls and perhaps a user-friendly interface. Overall, the ATL DA 220 is built to appeal to audiophiles, with features aimed at delivering superior sound quality while maintaining convenient functionality.

DA 220

The ATL 719 Pro is a versatile and high-performance audio product designed for both professional and enthusiast use. It features a well-engineered design that caters to critical listening, ensuring precise audio reproduction across various frequencies. This model is built using high-quality components that enhance durability and sound integrity. The input options typically include balanced XLR and unbalanced TRS connectors, allowing compatibility with a wide range of audio equipment. The ATL 719 Pro also boasts a robust frequency response range, enabling the reproduction of deep bass and clear highs, which is ideal for mixing and mastering applications. Its compact design makes it suitable for studio use as well as portable setups. Users often highlight its superior soundstage and imaging capabilities, providing an immersive listening experience that is crucial for detailed audio work.

719 Pro

The ATL 715 Pro is a 4-way bass reflex floorstanding loudspeaker manufactured by ATL between 1989 and 1993. It features multiple driver configurations that enhance sound quality across a vast frequency range. The speaker includes a low-frequency driver made of 215 mm polypropylene, a low-midrange driver with a 133 mm polypropylene cone, and two tweeters: a 25 mm and a 38 mm aluminium dome tweeter. This speaker delivers a power handling capacity of 140 watts nominally and can handle up to 180 watts in music playback. With an efficiency rating of 93.5 dB, it allows for effective sound performance in various listening environments. The frequency response ranges from 20 Hz to 22,000 Hz, maintaining a ± 3 dB variation, and the transitional ranges are set at 280 Hz, 1,200 Hz, and 4,500 Hz. The ATL 715 Pro has an impedance of 4 Ohm. The speaker is available in a variety of finishes, including 170 RAL colors and various veneers, enabling aesthetic customization to fit different interior designs. Its dimensions are 275 mm in width, 1050 mm in height, and 395 mm in depth, making it a substantial option for audio enthusiasts.

715 Pro

The ATL 712 S is a high-performance loudspeaker system designed to deliver an immersive listening experience with remarkable audio clarity. It typically features a two-way design with a robust bass driver complemented by a highly detailed tweeter for accurate sound reproduction across the frequency spectrum. The speaker cabinet is often constructed from premium materials to minimize resonance and distortion, providing a clean sound output. The ATL 712 S may include advanced crossover technology allowing for seamless integration between the drivers, ensuring phase coherence and the natural delivery of frequencies. Depending on the model variations, the speaker may offer options for different finishes and configurations to suit various aesthetic preferences and room acoustics. It is commonly used in both home audio systems and professional studio environments for monitoring and playback.

712 S

The ATL 712 Pro is a 3-way bass reflex floorstanding loudspeaker that was manufactured in 1989. It features a robust construction with dimensions of 268 x 960 x 370 mm (W x H x D) and has a weight of 23 kg. The loudspeaker is available in 170 RAL colors and various veneer finishes, providing customization options for both aesthetic appeal and integration into various environments. 

In terms of technical specifications, the ATL 712 Pro is equipped with a low frequency driver that measures 215 mm and is made of polypropylene, ensuring a solid bass response. It has a midrange driver that features a 38 mm aluminum dome tweeter and a 25 mm aluminum dome tweeter, allowing for a well-rounded sonic performance. The loudspeaker is rated for power handling at 110 watts nominal and 140 watts music, with an efficiency of 93 dB. The frequency response ranges from 20 Hz to 22,000 Hz (± 3 dB), making it capable of reproducing deep bass notes as well as higher frequencies clearly. Transitional ranges are set at 800 Hz and 4,500 Hz, while the impedance is rated at 4 Ohm. 

Overall, the ATL 712 Pro is designed for audio enthusiasts, providing a balance of performance and aesthetic options.

712 Pro

The ATL 711 Pro is a portable and versatile audio device designed for both personal and professional use. It features advanced audio processing capabilities, delivering high-quality sound reproduction across various genres of music and audio. The device is equipped with Bluetooth connectivity, allowing seamless pairing with smartphones, tablets, and other Bluetooth-enabled devices. It also supports multiple audio formats, ensuring compatibility with a wide range of media sources. Additionally, the ATL 711 Pro boasts an ergonomic design, making it easy to carry and use in various environments. Its battery life is robust, providing extended playback time on a single charge, which is ideal for users on the go. The interface includes intuitive controls for volume, playback, and mode selection, making it user-friendly. Overall, it is a powerful tool for audiophiles and casual listeners alike, with features aimed at enhancing the listening experience.

711 Pro

The ATL 710 Pro is a high-end audio product.

710 Pro

The ATL 709 S is a 3-way bass reflex floorstanding speaker manufactured by ATL Elektro Akustik Vertriebsgesellschaft mbH in Germany, first released in 1993. It boasts a stylish design available in a variety of finishes, including 170 RAL colors, six Fleck-Stone coatings, and various veneers. The speaker has dimensions of 160 x 920 x 285 mm (W x H x D) and weighs approximately 90/120 watts in power handling capacity. The driver configuration includes a 170 mm low frequency woofer positioned on the side, a 105 mm midrange driver, and a 25 mm fabric dome tweeter, delivering an efficient performance with an efficiency rating of 88.5 dB and a frequency response range extending from 25 Hz to 20 kHz ± 3 dB. The crossover points are set at 440 Hz for the midrange and 4,500 Hz for the tweeter with an impedance rating of 4 Ohm. Other models in the series include the 701 S, 703 S, 705 S, 707 S, 709 S, and 712 S.

709 S

The ATL 709 Pro is a 3-way bass reflex floorstanding speaker designed and manufactured by ATL Elektro Akustik Vertriebsgesellschaft mbH in Germany. It was released in 1991 and features a sturdy black design, with dimensions of 220 mm in width, 900 mm in height, and 290 mm in depth, weighing approximately 11 kg. The speaker incorporates dual low-frequency drivers of 170 mm made from polypropylene, a midrange driver of 100 mm also made of polypropylene, and a 25 mm fabric dome tweeter. It has a power handling capacity of 110 Watts nominal and 140 Watts music, with an impressive efficiency rating of 93 dB. The frequency response spans from 25 Hz to 20,000 Hz ± 3 dB, with transitional ranges at 450 Hz and 4,000 Hz. It operates at an impedance of 4 Ohms and offers special features such as bi-wiring capabilities and treble adjustment options.

709 Pro

The ATL 707 S is a speaker model that features a three-way design, focusing on delivering clear and dynamic sound reproduction. It typically includes a 7-inch woofer, a 4-inch midrange, and a high-frequency driver, facilitating a broad frequency response that allows it to perform well across various music genres. The cabinet is usually constructed from high-quality materials to minimize resonance and enhance sound clarity. The ATL 707 S is designed for versatility, making it suitable for both home audio setups and studio applications. It is often characterized by its accurate imaging and responsive bass output, allowing listeners to experience music with depth and detail. Specifications may include impedance ratings around 8 ohms, sensitivity levels approximately in the 85-90 dB range, and an estimated frequency response extending from 40 Hz to 20 kHz, making it appropriate for a wide variety of audio sources.

707 S

The ATL 707 Pro is a studio monitor loudspeaker designed for professional audio applications, offering high precision and good performance for mixing and mastering tasks. It features a robust construction aimed at minimizing resonance and ensuring accurate sound reproduction. With its two-way design, the ATL 707 Pro integrates a high-frequency driver and a low-frequency driver, providing a balanced sound across the frequency spectrum. Typical specifications include a frequency response range that usually encompasses from 40 Hz to 20 kHz, allowing for deep bass and clear highs. The power handling capacity often reaches around 70-100 watts, offering sufficient output for professional settings. Additional features may consist of rear bass ports for enhanced low-frequency response and adjustable high-frequency control to customize the sound to suit different environments. Whether in a studio or a sound installation, the ATL 707 Pro aims to deliver sonic accuracy and reliability.

707 Pro

The ATL 707/II Pro is a loudspeaker system designed for high-performance audio applications. It features a 3-way configuration with a bass driver optimized for deep, accurate reproduction of lower frequencies. The midrange driver handles the critical vocal ranges and instrument sounds, providing clarity and presence, while the high-frequency driver ensures shimmering highs with excellent dispersion characteristics. The cabinet is engineered for minimal resonance, typically with a bass reflex design that enhances efficiency and bass response. The speakers support various input options, making them versatile for use in different environments, from home audio setups to studio monitoring. With an emphasis on user-friendly placement and integration, the ATL 707/II Pro also offers adjustable crossover settings to fine-tune performance based on room acoustics and listener preferences.

707/II Pro

The ATL 706 Pro is a compact 2-way bass reflex loudspeaker designed for high-quality audio performance. Produced in 1989, it features a woofer made of 170 mm polypropylene and a 25 mm aluminum dome tweeter. The unit can handle a nominal power of 70 watts, with a peak capacity of 90 watts. Its efficiency is rated at 89.3 dB, providing a frequency response that spans from 36 Hz to 22,000 Hz with a tolerance of ± 3 dB. The crossover frequency is set at 1,900 Hz, and the speaker has an impedance of 4 ohms. The dimensions of the ATL 706 Pro are 225 mm in width, 400 mm in height, and 308 mm in depth, making it a compact solution for various audio environments. It is available in 170 different RAL colors and a range of veneers, allowing for customization to fit different decor. This loudspeaker is part of a larger series that includes other models, offering a range of similar configurations suitable for different audio needs.

ATL