Diffuser Disc EUROLITE CLS-18 QCL RGB/WW 18x7W — light diffuser for CLS-18 QCL fixture

The EUROLITE CLS-18 QCL RGB/WW 18x7W diffuser disc is an accessory designed to alter the beam profile of the CLS-18 QCL fixture. It mounts onto the front of the fixture to soften LED output from the 18x7W RGB/WW emitters, promoting smoother color mixing and reducing visible hot spots. The accessory is intended for use in stage, event, and studio lighting applications where improved beam uniformity and gentler light transitions are desired.

Advantages

The diffuser disc provides a consistent, softened light output that helps blend RGB and warm-white channels for more even color reproduction. By reducing pronounced beam edges and hot spots, it delivers a more pleasing wash effect and minimizes the need for additional diffusion material. The accessory is easy to attach and remove, enabling quick adaptation of the CLS-18 QCL to different lighting requirements without modifying the fixture.

Suitable for

• Stage washes and theatrical lighting where even illumination is required
• Event lighting for ceremonies, corporate events, and receptions to improve visual comfort
• Studio and broadcast setups that need smoother color transitions and reduced glare
• Rental inventories seeking modular accessories to extend fixture versatility

When it may not be suitable

The diffuser disc reduces beam intensity and sharpness, so it may not be appropriate when a tight, long-throw beam or high-intensity spotlight is required. Use of the diffuser can alter perceived color temperature and contrast slightly due to scattering; for applications demanding precise beam edges or maximum output, the plain fixture without diffusion is preferable.

Key specifications

• Function: front-mounted optical diffuser for beam softening and color blending
• Compatibility: designed to fit the CLS-18 QCL fixture family
• Optical effect: softens beam, reduces hotspots, improves color mixing
• Material characteristics: durable optical-grade diffusion element (non-abrasive finish)
• Installation: tool-free attachment for quick fitting and removal

How to use

Attach the diffuser disc to the front of the CLS-18 QCL fixture according to the fixture’s accessory mounting points. Ensure the fixture is powered off or the LEDs are cooled before fitting to avoid heat-related handling. Once mounted, operate the fixture normally; the diffuser will scatter and blend the light from the RGB/WW LEDs, producing a softer wash. Remove the disc when a crisper beam or maximum intensity is needed.

What to consider before purchase

• Confirm physical compatibility with your CLS-18 QCL fixture model and mounting method
• Consider the reduction in beam intensity and adjust fixture placement or power accordingly
• Check whether the diffusion effect meets your requirements for color fidelity and contrast
• Assess whether you need additional accessories (gels, barn doors) to shape the softened beam

Usage recommendations

For evenly lit washes and smoother color transitions, use the diffuser disc in front positions for close to medium throw distances and combine with subtle DMX color mixing. When sharper beams are needed, remove the disc to restore the fixture’s native output.