

Nerthus
Barco Nerthus DCI 4K RGB Laser Cinema Projector
DCI-certified 4K RGB laser projector with 32,000 lumens, three-chip DLP, and 100% Rec.2020 color coverage. Designed for the most demanding residential screening rooms and private cinema installations, with full DCI compliance, Barco Alchemy ICMP-X media processor, and Active Image Management for automatic precision calibration. Pricing on application.
Overview
The Barco Nerthus represents the absolute pinnacle of residential projection, drawing directly from Barco's DCI-certified commercial cinema engineering. At its core are three 1.38-inch DC4K Texas Instruments DLP chips delivering native 4096 x 2160 resolution, driven by an RGB laser light source rated at 32,000 lumens and a 40,000-hour service life. Barco's Colorgenic processing achieves 100% Rec.2020 color volume, surpassing the DCI P3 standard used in commercial cinemas, ensuring every frame appears exactly as the director of photography intended. The Nerthus is DCI compliant at full 4K up to 60fps, with support for high frame rates at 2K 3D (120fps per eye) and JPEG 2000 content at up to 625Mbps, making it the only projector choice for clients who demand true cinema-grade performance, not a consumer approximation of it. The integrated Barco Alchemy ICMP-X media processor with 2TB disks handles DCI content natively, while Active Image Management with patented precision brightness technology and automatic white balance ensures the image remains calibration-accurate over the lifetime of the installation. Multiple B-lens options cover throw ratios from 1.13 to 3.40, accommodating virtually any room geometry, and the projector is future-ready for 4K 120fps playback. This is not a product you configure from a spec sheet; it is an engineering partnership with Barco and Kolosseum to design, install, and calibrate a private cinema that matches or exceeds the performance of the world's finest commercial screening rooms.
Downloads & Documentation
Pros & Cons
Strengths
- Only projector platform delivering true DCI compliance and full cinema-operator accountability in a private installation
- RGB laser light engine achieves 100% Rec.2020 color volume, surpassing commercial DCI P3 requirements
- 32,000 lumens enables cinematic performance on screens that would overwhelm any consumer projector
- Integrated Barco Alchemy ICMP-X media processor handles DCI content natively with JPEG 2000 at up to 625Mbps
- Active Image Management with automatic white balance ensures calibration accuracy is maintained without manual intervention
- 40,000-hour RGB laser life essentially eliminates light source maintenance for the lifetime of the installation
- Multiple Very High-Contrast B-lens options cover throw ratios from 1.13 to 3.40 for virtually any room geometry
- Architectural Edition available for installations requiring the highest levels of aesthetic integration
Limitations
- No Dolby Vision support (shared limitation across all projectors, including commercial cinema systems)
- 51 dB(A) operating noise requires a dedicated projector room with ventilation ducting, not in-room placement
- 170 kg chassis and 3.9kW power draw demand bespoke structural and electrical engineering during room design
- Pricing on application, project timelines require early-stage engagement with Barco and Kolosseum
Full Specifications
Display
Light Source
Media Processor
Lens & Projection
HDR & Formats
Connectivity
Physical
Certification & Safety
Integrating the Barco Nerthus into a Private Cinema
The Barco Nerthus is not specified at the end of a project, it defines the project from the beginning. At Kolosseum, an installation of this caliber begins with an architectural brief: room dimensions and geometry, screen size and surface, structural load capacity, dedicated electrical supply, and HVAC for both the projector room and the screening space. The Nerthus's 32,000-lumen RGB laser output means screen sizes that would be impossible with any consumer projector become routine, and the DCI compliance means the system can screen content directly from a Barco Alchemy ICMP-X as a licensed Digital Cinema Package without transcoding or compression. This is the correct choice for a client who attends film festivals, has a significant film collection in DCP format, or simply demands that their private cinema be measured against the world's finest commercial theatres, not the consumer electronics market.
Room Requirements
The Nerthus at 170 kg and 3.9kW requires a dedicated projector booth with engineered structural support, three-phase 200-240V electrical supply at 25A, and active ventilation ducting. The projector booth must be acoustically isolated from the screening room to manage the 51 dB(A) operating noise. Projection port glass must be optically flat, anti-reflective treated, and sized appropriately for the chosen lens. Lens selection from the B-lens range (throw ratios 1.13 to 3.40) is determined during room design; Barco's lens calculator tool is used to verify the exact throw for the target screen size and projector placement. Screen sizes from 120" to 400"+ are achievable depending on throw distance and room depth.
Recommended Screen Pairing
A Barco Nerthus installation calls for a premium perforated screen to allow centre-channel speaker placement behind the screen surface. We specify Severtson Screens, Stewart Filmscreen Cima or Director's Choice perforated, or custom fabrications depending on the room. Screen gain of 1.0 is standard for DCI color accuracy at this luminance level; higher-gain surfaces will cause hot-spotting at 32,000 lumens. For the widest screens, a curved surface improves off-axis uniformity. The screen frame and masking system are designed alongside the room to allow both flat (1.85:1) and scope (2.39:1) presentations.
Acoustic Considerations
A Barco Nerthus installation is invariably paired with a professional sound system, typically Dolby Atmos or a custom immersive audio design. The acoustic design of the room must be completed before construction begins: wall, floor, and ceiling treatments; bass trapping; speaker placement; and projector port isolation are all interdependent. The projector room must have its own return air path to prevent positive pressure building up during operation, and thermal management of the room at full 3.9kW projector load must be calculated for the local climate. Kolosseum engages specialist acoustic consultants as part of the design team for every Nerthus installation.
Frequently Asked Questions About the Barco Nerthus DCI 4K RGB Laser Cinema Projector.
The Nerthus is a DCI-certified commercial cinema projector, not a consumer or prosumer product. It is DCI compliant, meaning it meets the Digital Cinema Initiatives standard required to screen commercially distributed films in licensed theatres. It includes the Barco Alchemy ICMP-X media processor for native DCI content playback, outputs 32,000 lumens from an RGB laser source, and covers 100% of Rec.2020 color volume. No consumer projector, regardless of price, offers DCI compliance, an integrated ICMP, or this combination of luminance and color accuracy.
No, the Nerthus does not support Dolby Vision. This is a universal limitation across the projector market, including all commercial cinema projectors. DCI-certified projectors use the HDR10 standard alongside DCI P3 and Rec.2020 color spaces, which are the reference formats used in commercial exhibition. In practice, Barco's Colorgenic processing with 100% Rec.2020 coverage and native DCI P3 compliance exceeds what Dolby Vision is designed to deliver in a home environment.
With 32,000 lumens, the Nerthus can fill screens from 150" to 400"+ in a properly designed screening room. At 350" diagonal (approximately 7.6 metres wide for a 2.39:1 scope screen), measured luminance on a 1.0-gain surface exceeds 48 foot-Lamberts, which is well above the DCI reference of 14 fL. Screen size, throw distance, and lens selection are determined during room design using Barco's lens calculator and Kolosseum's room design process.
DCI (Digital Cinema Initiatives) compliance means the projector meets the technical specification required to screen commercially distributed film content in a licensed venue. For a private cinema, it means you can screen DCI Digital Cinema Packages (DCPs) directly via the integrated Barco Alchemy ICMP-X processor, without transcoding or quality loss. It also means the image meets the color, brightness, and contrast specifications that studios use when approving content for commercial release, so what you see is precisely what the director and colorist intended.
Barco Colorgenic is the color management and processing engine built into the Nerthus. It achieves 100% coverage of the Rec.2020 color space, which is the largest standardized color gamut used in professional media production. This means the projector can reproduce colors that no display technology outside of specialist reference monitors can approach. For film content mastered to DCI P3 or Rec.2020, every color value is reproduced accurately, without clipping or compression at the limits of the gamut.
The Nerthus operates at 51 dB(A) typically at 25°C, which is significantly louder than consumer projectors rated at 20-26 dB. For this reason, every Nerthus installation requires a dedicated projector room, acoustically isolated from the screening space, with a projection port and ventilation ducting. Kolosseum designs the projector booth and ventilation system as part of the room design to ensure the noise does not enter the listening environment.
The Nerthus requires a dedicated single or triple-phase 200-240V supply at 25A, with a total power draw of 3.9kW. This requires engagement with a licensed electrician and, in most states, a building permit for the new circuit. Kolosseum coordinates the electrical specification with the project's building team during the design phase to ensure the supply is correctly sized and the circuit is protected.
A Barco Nerthus project begins at the design stage, not at the specification stage. Kolosseum works with your architect, builder, and electrical contractor from the initial room brief to define the structural, electrical, HVAC, and acoustic requirements before construction begins. We manage the Barco lens selection, projector room design, projection port specification, and screen design as an integrated package. Following installation, we coordinate Barco commissioning and calibration, and we provide an ongoing service relationship to ensure the system performs at reference standards over its lifetime.
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View Details →Ready to Design Your Cinema Around the Nerthus?
Kolosseum is an independent design consultancy, not a retailer. We design the complete cinema experience and connect you with authorized dealers for purchase and professional installation.
Tell us about your room, your budget, and your vision. We will create a complete cinema design that integrates the Barco Nerthus DCI 4K RGB Laser Cinema Projector with the right screen, speakers, acoustics, and seating.