The Klark Teknik DN9620 is a pair of advanced AES50 extenders and multiplexers designed to overcome the limitations of traditional CAT5 and Ethernet cabling in digital audio networks. By extending the range of AES50 connections up to 500 meters using multimode optical fibre or 100 meters using CAT5 copper cable, the DN9620 offers a robust solution for long-distance audio transmission in live sound, studio recording, and broadcast environments. This extension is achieved without the need for complex cabling or external format conversion, making it an ideal tool for expanding the physical size of AES50 networks while maintaining high-quality audio performance.
The DN9620 functions as both a bidirectional multiplexer and demultiplexer, combining two incoming AES50 streams into a single outgoing snake connection, and conversely, unbundling the snake connection to route the two AES50 streams to their corresponding AES50 ports. This process ensures that the snake system is transparent in use, incurring only a minimal propagation delay of 270 microseconds, which is negligible in the context of large-scale audio systems. The DN9620 pair simplifies complex routing and connection management, allowing AES50 audio networks to span significant distances while ensuring signal integrity and minimal latency.
Each DN9620 unit supports bidirectional operation at high channel capacities, with up to 48 channels at 96 kHz or 96 channels at 48 kHz per AES50 connection. These high-capacity connections make the DN9620 an excellent choice for applications requiring substantial audio throughput, such as large concert productions, complex recording sessions, and high-channel-count broadcasting setups. The unit is capable of synchronizing to either the internal clock source or external AES50 or snake clock signals, with front panel push-button selection making clock source and sample rate adjustments quick and easy. This flexibility ensures that the DN9620 can integrate seamlessly into a variety of digital audio systems, providing the necessary synchronization for flawless audio performance.
The DN9620's rugged design is built for the demanding environments of live concert touring. The unit features a durable steel half-width 1U rackmount chassis, ensuring it can withstand the physical challenges of constant transportation and setup. The chassis is further protected by a silicone rubber sleeve, providing additional insulation and electrical isolation. Premium Neutrik etherCON and opticalCON DUO connectors are used for AES50 ports and the optical fibre snake connection, ensuring secure and reliable network connections night after night. The DN9620 is designed to be simple to deploy, requiring only a mains power supply for operation. The included external auto-ranging universal switch-mode power supply adapter ensures global compatibility, supporting voltage ranges from 100 to 240 V~, 50-60 Hz.
Whether used in conjunction with Midas digital consoles, audio system engines, or other AES50-compatible devices, the DN9620 ensures reliable and high-quality digital audio transmission across extended distances. Its flexible configuration options, ease of use, and robust build make it an indispensable tool for professional audio engineers who need to extend the reach of their AES50 networks without sacrificing performance or reliability.
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