PRO SERIES DL451

DL451 is a 3U 19" modular configurable rack mount I/O unit with provision for 3 DL4 Series interface cards and up to 24 audio inputs and 24 audio outputs. With two AES50 network ports and two Ethernet control ports providing dual redundancy, plus a MIDI Interface (In, Out, Thru), the DL451 is the ideal partner to all Midas PRO Series digital consoles, enabling a digital snake connection from Front of House to stage or to provide additional local I/O at the console mix position.

Modular Expansion Cards

Five DL4 Series card options are available for DL451: DL441 - 8 Analogue Mic/Line Input Card with Midas Microphone Preamplifiers DL442 - 8 Analogue Line Output Card DL443 - Analogue 8 Input, 8 Output Card with ¼ " TRS Connectors DL444 - Analogue 8 Input, 8 Output Card with Midas Microphone Preamplifiers and D-Type Connectors DL452 - AES3 Digital 8 Input, 8 Output Card with Sample Rate ConversionDL451 can accept up to 3 of these cards in any combination. The DLIO-BP blanking plate is also available as an accessory should not all card positions be populated.

Digital Audio Networking

SuperMAC (AES50-Compliant) digital audio networking technology from Klark Teknik simultaneously provides high channel counts, ultra low and deterministic latencies, sample-synchronous and phase-aligned networked clock distribution, error detection and correction, network redundancy, and ease of deployment and use – to meet the demanding requirements of live concert touring. DL451 is compatible with all Midas PRO Series digital consoles and audio system engines, as well as with any other 96 kHz-enabled AES50-equipped devices.

Remote Console or Front Panel Control

All configuration settings for DL451 can be set either remotely from the mixing console, or directly via the intuitive and easy to understand front panel. DL451 features a front panel LCD display with intuitive menu navigation for all configuration options with LED status indicators, which provide clear feedback of operational status over wide viewing angles and distances. Clear indication is provided showing power supply output rail condition and AES50 and Ethernet network connection status and activity.

External Control Ports

DL451 features two General Purpose (GPIO) 25-pin D-type connectors for external device control, one for inputs and the other for outputs, which are opto-isolated to ensure galvanic isolation and avoid ground loops. External trigger events received via the input port are relayed to the PRO Series control centre, and external devices can in turn be triggered from the output port in response to scene change messages inserted in the console automation show file running in the control centre. An industry-standard MIDI interface (In, Out, Thru) is also provided to send and receive MIDI messages which can also be used in conjunction with the control centre’s automation system.

Built for the Road

Featuring a rugged steel 3U rackmount enclosure, the DL451 is designed for the rigours of live concert touring. Premium industry-standard connectors are used to ensure reliable network connections, night after night.

Auto-ranging universal switch-mode power supply

DL451 features a universal power supply, which is auto-voltage sensing for use on a worldwide basis.

Architecture & Engineering Specifications

The interface unit shall be designed for digital audio mixing applications and be optimised for use in live performance. It shall feature a modular construction, allowing for 3 proprietary format interface cards, providing up to 24 audio inputs and 24 audio outputs and shall be capable of operating at 96 kHz sampling rate. The interface unit shall support a 100 Megabit Ethernet frame-based digital audio network that shall off er dual redundancy and be compliant with the Audio Engineering Society AES50-2011 standard. Two digital audio network ports and two Ethernet control ports shall be provided, both operating on a dual redundant basis. The interface unit shall include two General Purpose (GPIO) 25-pin D-type connectors for external device control, one connector for inputs and one connector for outputs, both of which shall be opto-isolated to provide galvanic isolation. An industry-standard MIDI Interface (In, Out, Thru) shall also be provided. The interface unit shall provide both front panel and remote network configuration of operational settings and provide an alphanumeric LCD display with associated menu navigation buttons, and LED status indication of power supply output rail condition and digital audio and control network connection status and activity. The interface unit shall include an auto-ranging universal switch-mode power supply for use on a worldwide basis. The interface unit shall be housed in a standard 3U 19" rackmount chassis, and shall be 483 mm wide x 418 mm deep x 132 mm high (19.0" x 16.5" x 5.2"), with nominal weight 10.1 kg (22.2 lbs). The interface unit shall be installed in a rack frame or road case capable of safely supporting its weight. Input, output, and power connections shall be made at the rear panel of the interface unit. Installers shall allow adequate space at the rear for connection and disconnection of input, output, and power connections. The power requirements shall be 100 to 240 VAC, 50 to 60 Hz. The interface unit shall be the Midas DL451 and no other alternative shall be acceptable.