Robert Juliat Arthur LT - 800W 7000K LED Followspot with 4 to 10-Degree Zoom and DMX in Black Finish

The Robert Juliat Arthur LT is an advanced long-throw LED followspot designed to meet the demanding requirements of professional lighting applications. This model features a powerful 800W LED engine, capable of producing an impressive output that rivals traditional HMI 2500W followspots, making it ideal for large venues such as concert halls, theaters, and stadiums. With a color temperature of 7000K and a high CRI of over 94, the Arthur LT excels in illuminating performers with natural and vibrant colors, ensuring they are showcased in the best possible light.

One of the standout features of the Arthur LT is its narrow zoom range of 4° to 10°, allowing for precise control over the beam angle. This makes it especially effective for long-distance applications, providing a minimum output of 2000 lux at a distance of 50 meters (200 fc at 165 ft). The variable zoom optics ensure sharp focus at every beam angle, enabling users to adjust the image size and focus independently. This flexibility is essential for achieving the desired lighting effects in varying performance environments.

The Arthur LT is designed for ease of use and quick adjustments during performances. It includes a fully closing iris that is controlled from the top of the unit, enhancing convenience for operators. The ergonomic design features a dimmer control lever on top, allowing for one-handed operation of both dimming and iris functions, while the built-in potentiometer provides local control for light intensity adjustments. The followspot also includes a graduated scale on the side for easy reference, facilitating quick focus adjustments when necessary.

In terms of functionality, the Arthur LT is equipped with a range of accessories to enhance its versatility. The internal glass filter holder accommodates durable colored, dichroic, or textured glass for long-term use. The unit also features a removable color frame, making gel replacements simple and efficient without having to remove the entire cassette. The included 6-way self-cancelling boomerang color changer allows for multiple filters to be used simultaneously, providing users with creative flexibility in their lighting designs.

The Arthur LT is built with durability and reliability in mind. Constructed from robust steel and aluminum, it is designed to withstand the rigors of professional use while maintaining a sleek and elegant appearance. The integrated PSU is flicker-free, ensuring seamless operation in various lighting situations, while the silent-running cooling fans contribute to its quiet performance, making it suitable for sensitive environments such as opera houses and TV studios.

This followspot is also equipped with advanced DMX capabilities, including Ethernet-DMX nodes for seamless integration into existing lighting setups. The Arthur LT is compatible with a wide range of protocols, including DMX, RDM, Art-Net, and sACN, allowing for flexible control options. Users can remotely adjust all parameters via the RDM protocol or web interface, enhancing the overall user experience.

With its combination of powerful output, user-friendly design, and advanced technological features, the Robert Juliat Arthur LT is an excellent choice for lighting professionals seeking a reliable and high-quality followspot for demanding applications.

Features

• Power: 800W LED engine delivering up to 39,000 lumens, comparable to HMI 2500W followspots.
• Color Temperature: 7000K, ensuring vibrant and natural color illumination.
• Zoom Range: 4° to 10°, perfect for precise long-throw applications.
• Optical Quality: High CRI (>94) for excellent color rendering, enhancing performer visibility.
• Control Features: Fully closing iris, ergonomic top controls for dimming and focus, and DMX capabilities for remote operation.
• Dimensions: Length: 65.6 inches, Width: 18.1 inches, Height: 20 inches, designed for effective use in larger venues.
• Cooling: Variable fans for efficient thermal management, ensuring quiet operation.
• Construction: Durable steel and aluminum bodywork designed for long-term reliability and performance.
• Maintenance: Easy access to components for quick cleaning and re-lamping, minimizing downtime.
• Weight: 248.6 lbs, providing stability during operation while remaining manageable for transport and setup.

Specifications

Source

• Lamp Type: LED
• Power: 840W
• Lumen Output: 39,000 lumens
• Color Temperature: 7000K
• Lamp Life: 20,000 hours
• CRI: 95

Optics

• Type: Zoom
• Range: 4° to 10° (Field angle)
• Focal length: - mm
• Gel Filter Shape: Circle
• Gel Filter Standard Size: 270 mm (10.6 in)
• Gobo Size: B
• Gobo Material: Metal, Glass

Photometrics

• Optics (4-Degree): 5,500 lux (30m), 3,100 lux (40m), 2,000 lux (50m), 1,400 lux (60m), 1,050 lux (70m), 770 lux (80m)
• Optics (10-Degree): 1,350 lux (30m), 750 lux (40m), 480 lux (50m), 330 lux (60m), 250 lux (70m), 190 lux (80m)

Remote Control

• Data protocol: USITT DMX512-A, RDM, Art-Net, sACN
• Data IN connector: 5 pins XLR male + 2x etherCON RJ45
• Data OUT connector: 5 pins XLR female

Dimensions and Weight

• Length: 65.6 inches
• Width: 18.1 inches
• Height: 20 inches
• Weight: 248.6 lbs

Construction

• Housing: Steel sheet - Aluminum
• Colour: Black
• Cooling: Variable fans
• Maximum ambient temperature (Ta): 40°C (104°F)
• Maximum case temperature (Tc): 51°C (123.8°F)
• Total heat dissipation: 3 516 BTU/h
• Ingress Protection (IP) rating: IP20

Electrical compatibility

• 220/230 V - 50 Hz
• 245 V - 50 Hz
• 110/120 V - 60 Hz
• 208 V - 60 Hz
• 220/230 V - 60 Hz
• 100 V - 50 Hz
• 100 V - 60 Hz
• Selector: automatic detection

Power Input

• Type: removable power cord with compatible powerCON TRUE1 connector (included)
• Cable: 14 AWG SJ type (UL/CSA)
• Length: 1.5 m (4.9 ft)
• Power connector: without connector

Power Supply Unit

• PSU: Internal - Electronic PSU - Flicker free with PFC
• Control: Local / DMX
• Protection: Mains: 20A 2P 2D fast switch breaker - UL /
• Power thru: compatible powerCON TRUE1 - Maximum of 3 units (230 V) / 1 units (120 V)