G·4 Wash-Beam

Micro-Fresnel LED wash-beam light

Housing colors
Black RAL 9004
White RAL 9010
Custom any RAL
Info shortcuts
  • High-power IP65 LED Wash-Beam moving head
  • Superb color mixing based on Red, Green, Blue, Amber, and Mint LEDs
  • Best-in-class color rendering index: TLCI > 90, CRI > 92, CQS > 91, Rf > 89
  • Accurate zoom range from 4.8º beam angle to 34º field angle
  • 2000K - 10000K CTC linear control with optimized color rendering
  • DMX, RDM, and wireless control
  • Silent performance; no internal cleaning needed
  • Flicker-free / programmable scenes / continuous pan movement

The G-4 Wash-Beam is a fast and compact wash moving light capable of outstanding color rendering and a sharp defined beam angle. The optical system is designed to deliver a high-quality color mix with an accurate and precise beam of light. Because of its remarkable output, wide zoom range, qualified color reproduction, accurate color temperature control, and low power consumption, the G-4 Wash-Beam is a very flexible moving light suitable for any application.


LED Technology
The G-4 Wash-Beam is the first moving head able to achieve a coherent and qualified light spectrum in all color temperatures by only using 5 colored LEDs. This is possible because of the combination between RGBAM additive mixing, included Micro-Fresnel lens and precise SGM firmware. The LEDs expected lifetime is 50,000 hours.

This small but powerful fixture includes RGB mixing in its lightsource with additional amber and mint LEDs to fill the typical gaps of a LED spectrum offering rich whites in all different color temperatures. Through the Color Emulation DMX channel, it is possible to match most of the colors present in the LEE catalog and to output only the amber or the mint LEDs. A plus/minus green function is also included for accurate color control in TV and film shootings.

Because of its brilliant optical performance, the G-4 Wash-Beam delivers unique features. Its zoom range goes from 4.8° to 34°º with smooth transition and no color shifts. The optical system is designed so maximum output is achieved in the 15º - 18º zoom range, instead of 4.8º beam angle. By doing this, the G-4 Wash-Beam achieves the best light output for its size, which is also the natural beam angle for this kind of moving head.

Micro-Fresnel behavior
The G-4 Wash-Beam uses a Micro-Fresnel front lens capable of a bright light output while delivering a similar performance of the traditional Plano-Convex lenses. As a PC-like luminaire, the G-4 Wash-Beam creates sharp defined shadows in flood position, and diffuse silhouettes in spot position with a visible and a clearly defined beam of light.

Full control via Studio Mode

The G-4 Wash-Beam includes the powerful SGM DMX Studio Mode, expanding its capabilities through a number of advanced features. Select different dimming curves, choose your preferred RGB CTC, RGBAM, CMY, HSI or XY color mode, adjust fan speed to reduce noise, change the LED frequency rate, and increase or reduce the peaks of green in the white output. Learn more about the SGM Studio Mode by reviewing the DMX chart in the "Download" section.

IP rating
The durable IP65-rating of the G-4 Wash-Beam luminaire ensures that the fixture is kept free of externally induced particles and liquids on internal optics and light sources, such as smoke fluid, dust, dirt, airborne pollution, and humidity. Thereby, the need to clean optics is eliminated and no internal corrosion will occur. It is ideal for outdoor applications, while being a sustainable and long-lasting choice for indoor events and installations as well.

The internal built-in dehumidifier protects this fixture from moisture, pollution and any other factors that can generate corrosion. The patented SGM dehumidification not only removes humidity but also prevents oxidation and condensation, while a gore-tex membrane equalizes internal pressure to prevent leaks. Learn more about dehumidification

The G-4 Wash-Beam is able to reach 8190 luxes at 5m distance with an excellent white and only W. This is one of the many benefits of using RGBAM color mixing, a Wash-Beam front lens, and accurate color calibration. In RAW mode, the G-4 Wash-Beam outputs a color temperature close to 7,000K with a CRI, TLCI, and CQS above 90, but these numbers are also in a similar range while using 5,600K or 3,200K in calibrated RGB mixing. Linear 2000K - 10000K CT control is also provided.

Interchangeable lens
With the addition of an optional interchangeable Fresnel lens, the G-4 Wash-Beam can easily be transformed into a G-4 Wash. The optional Motorized Barndoors lens module with individual DMX control can also be attached to the luminaire. For theatrical purposes, the G-4 Wash and the G-4 Wash Motorized Barndoors act like a regular fresnel light, while the G-4 Wash-Beam lens emulates the performance of a Plano-Convex projector.

Thermal management
To achieve optimum performance of the LEDs at all times, this bright and accurate luminaire is optimized to manage heat impact through SGM's unique thermal management technology. The technology consists of a uniquely designed body and heat sink, which ensures optimal cooling of the LED chips. Additionally, the special aluminum alloy and surface treatment ensures maximum heat dispersion while the fan-assisted cooling ensures optimal performance at any time and under any conditions (such as variable temperatures, limited airflows, confined installation spaces, etc.).
Like all SGM LED products, the G-4 Wash-Beam consists of SGM's superior thermal management technology and tested under extreme hot and cold conditions, which ensures that the LEDs always operate within safe parameters. Learn more about SGM thermal management

Mounting options
There are many mounting options available in the G-4 Wash-Beam. It can be rigged by using the included easy-fit omega bracket with ¼ turn fasteners, it can be installed in any kind of floor thanks to its integrated rubber feet, or it can be mounted with a special ceiling mount to eliminate the need of the base.


Included SGM technologies

This thermal management techonology provides Advaced Temperature Control monitored via sensors and software, keeping optimal LED junction temperatures, and ensuring maximum reliability for long-term use. The ThermalDriveTM system includes cutting-edge heat removal via passive thermal tecniques and active forced-air cooling (depending on the product), specifically designed to maintain LED efficiency while extending fixture's lifetime.

All luminaires featuring this technology include all the TruColorTM capabilities, plus high color rendering (CRI / TLCI / CQS 90+) when using all RGB or RGBAM LEDs to achieve high-output dynamic whites. SGM's TruColor+TM luminaires use an enhanced color engine that improves accuracy and consistency both for color mixing and low-end dimming, while using the same procedures to match the SGM color palette.

SGM's integrated patented Dehumidification process eliminates humidity and breaks down corrosive molecules deriving from polluted air to avoid destructive corrosion. Inbuilt dehumidifiers constantly remove trapped hydrogen from inside of the lighting fixture in a solid estate electrolytic process with no moving parts. The DryTechTM procedure is also based on a Ingress Protection rating of 65 or 66 (depending on the fixture), intended as a full protection against dust and other particles, while ensuring protection against direct water jets.


Optical Data
LED expected lifetime 50,000 hours
Lens diameter 136 mm
Lightsource 5 color 150 W
Zoom Motorized
Zoom range 4.8° to 34°
Average CQS (CTC) 91
Average CRI (CTC) 92
Average RF / TM-30-15 (CTC) 89
Average TLCI (CTC) 90
Color temperature range 2000K - 10000K
Efficacy 27.7 lm/W
Light output all LEDs on 5738 lm
Lumen per kilogram 574 lm / Kg
Lux @ 10m 2047 lux
Lux @ 3m 22740 lux
Lux @ 5m 8190 lux
Max. CRI @ 3200K 94
Max. CRI @ 5600K 92
Max. TLCI @ 3200K 87
Max. TLCI @ 5600K 93
Maximum beam angle 30 °
Maximum field angle 34 °
Minimum beam Angle 4 °
Minimum field angle 7 °
Color options Black - RAL 9004
Custom color - Any RAL
White - RAL 9010
IP class IP65
Material Aluminium
Net dimensions 219 x 537 x 255 mm
Net dimensions inches 8.6 x 21.2 x 10 inches
Net weight 10 kg (22.1 lbs)
Color calibration SGM proprietary, full color calibration
Dehumidifier Head
Dimming 2 Smooth fade in, DMX-controllable curves: gamma corrected, and halogen emulation
Emulation mode / effect Tungsten response emulation
Color Filter Emulation
Other Studio DMX mode(s)
Pan Endless
Pan modes 360°
360° Shortest path
Continuous CCW
Continuous CW
Strobe Ultra-high-speed strobe effects
Tilt 220°
Variable aperture Optimized Beam Narrow / Optimized Beam Wide
Electrical protection Overload protection with automatic recover
Input voltage, absolute max. rating 90 - 264 VAC; 50 / 60 Hz
Input voltage, nominal 100 - 240 VAC; 50 / 60 Hz
Max inrush current 230VAC 40 A
Max power consumption 250 W
Power Supply Unit Auto-ranging electronic switch-mode
Standby power consumption 18 W
Programming and Control
16-bit control Dimmer, colors, pan/tilt
Cabled DMX 5 pin XLR input/output
DMX channels 18
DMX modes 1
Protocol CRMX, W-DMX™ G2, W-DMX™ G3, W-DMX™ G4, W-DMX™ G4S
Setting and addressing Control panel
Standalone mode 8 Internal Standalone Programs
9 Internal Pan/Tilt Presets
Wireless DMX Lumen Radio with RDM
DMX data in/out IP65 XLR 5-pin cable, 0,2 m (7.8 in)
IP65 XLR 5-pin connector, Male
Power Power input connector
Mounting point 2 quarter-turn locking points for one Omega bracket
Orientation Any
Rigging possibilities Hanging (Omega Bracket included) or ceiling/wall mount (optional)
Safety features 2 attachment points for safety wire
Minimum distance to combustible materials: 0.3 meter (11 in).
Cooling Active, Forced Air, Temperature-regulated
Humidity (max.) 98 %
Temperature range, operating -40°C to 50°C
Temperature range, start-up -20°C to 50°C
Temperature range, storage -40°C to 80°C
Thermal protection Automatic overtemperature protection
Total heat dissipation, max power 853 BTU per hour
Total heat dissipation, standby 61.4 BTU per hour
Included items
Included items 2 m IP66 power cable pigtail
1 Omega bracket with quarter-turn fasteners
Conforms To
CE - 2014/30/EU: EMC Directive EN 55103-2
EN 55015
EN 61547
EN 61000-3-2
EN 61000-3-3
EN 55032
CE - 2014/35/EU: Low Voltage Directive EN 60598-1
EN 60598-2-17
EN 62471
EN 60529
RoHS2 Directive 2011/65/EU
UL UL Std. 1573
Certified To
CSA CSA Std. C22.2 No. 166

Certifications & classifications


Ordering information

Product name Item number
G-4 Wash-Beam, Std, WH 80102101
G-4 Wash-Beam, Std, CU 80102201
G-4 Wash-Beam, Std, BL 80101901
G-4 Wash-Beam, Std, WH, Ceiling mount 80102102
G-4 Wash-Beam, Std, CU, Ceiling mount 80102202
G-4 Wash-Beam, Std, BL, Ceiling mount 80101902
Accessories Item number
G·4 Wash Front Lens Kit 83061409
Omega Bracket with 1/4-turn fasteners 83060602
Flight Case for 4 pcs of G·4 82051011
Power cable with IP connector 07860275
SGM USB uploader cable 83062011
Vacuum Test Kit 83061136
A·4 80070217
4-way Motorized Barndoors for G·4, S·4 83061166
RDM Addressing Tool

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