Source Four LED Series 3 Lustr X8
Source Four LED Series 3 Lustr X8

Source Four LED Series 3 Lustr X8


A spotlight for every location
Revolutionary color mixing with unparalleled brightness
for every location in your theatre.


Setting standards that are far from standard
Over a decade of research comes together for the market that has inspired ETC for over 45 years. The Source Four LED Series 3 brings the brightest light to the stage with the Lustr X8 array for the most nuanced colors.

We’ve added wireless DMX/RDM by integrating City Theatrical’s Multiverse® protocol, and easy NFC configuration using your mobile device and ETC’s Set Light app.

Get the brightness you need from every distance, the color you’ve been craving, and the control you deserve for the most efficient workflow. Like all ETC fixtures, Series 3 is backed by an unmatched industry warranty.

The color of emotion
When ETC added lime to the x7 array in 2014, it was a revolutionary step forward for color mixing. Lime green increased the lumen output in open white and lighter tints making them brighter and livelier than other LED mixes. It was a step closer to matching the tungsten output of a conventional Source Four fixture. It also enriched color-rendering by better marrying the red and blue ends of the color spectrum.

Well, we’ve done it again. This time we’re adding Deep Red to the mix. With the eight-color Lustr X8 array, Series 3 renders skin tones and sunsets with new depth.

Hang this fixture in a box boom, overhead, or from the farthest back-of-house position and be amazed at how bright your stage is. Source Four LED Series 3 truly brings brightness from every position.

ETC’s R&D department developed a way to give you fixtures that output a surprising number of lumens while maintaining the nuanced color control you need to enhance every set, every stage, every venue. We’ve reached further into the corners of the CIE color space to grab a red that is essential to accurately capture the life within every shade of skin, the warm glow of firelight, and the romance of sunset.

Lustr X8 brings a new depth to your colors and, in turn, emotion to your stage:
The full color Lustr X8 array includes a patented mix of green, lime, blue, indigo, cyan, amber, red, and deep red LEDs.

Lens Tubes
Introducing XDLT lens tubes that provide the highest output, clarity, and contrast of any lens tube on the market. Use your existing lens tubes, or upgrade to XDLT.

Ready for the professional stage

Wireless technology
The built-in near field communication (NFC) hardware gives you the ability to configure your fixture with your mobile phone or tablet running the Set Light app. Amazingly, this works even if the fixture isn’t powered, allowing you to config while you rig. Ready, set, light!

Next generation DMX
ETC has partnered with City Theatrical to bring you a patent-pending wireless DMX/RDM technology that enables scalability of wireless lighting data like never before. Multiverse® will change your entire approach to lighting by allowing large wireless DMX/RDM systems to be expanded even further. Used in conjunction with your console, City Theatrical’s Multiverse can broadcast as many as 10 universes of DMX from a single transmitter without excessive radio energy. This frees up precious wireless bandwidth in your space. Multiverse plays well with others but is robust enough that other signals won’t interfere.

Download the whitepaper to learn more.

Intuitive UI
The user interface was designed to make your workflow as efficient as possible. It is intuitive without compromising on feature set.

Quickly and accurately adjust settings.
The physical UI lock prevents unintentional bumping from changing settings
Powered USB port for software updates and configuration backup
Settings menu accessed through the menu button
Toggle through operational modes using the function button
The four backlit encoders change colors to correspond to the attributes they control on the screen

Additional information




Ready for the professional stage

Source Four Series 3 Leader Lines

Color mixing or White-light Light Emitting Diode Profile fixture
*NB: LEDH hold the X8 model


    1. The fixture shall be a color-mixing high-intensity LED illuminator with DMX control of intensity and color. The fixture shall be a Source Four LED Series 3 as manufactured by Electronic Theatre Controls, Inc. or approved equal.
    2. All LED fixtures shall be provided by a single manufacturer to ensure compatibility
    3. The fixture shall be UL 1573 listed for stage and studio use
    4. The fixture shall comply with the USITT DMX-512A standard


    1. The unit shall be constructed of rugged, die cast aluminum, free of burrs and pits, finished in black.
    2. The following shall be provided:
    a. Shutter assembly shall allow for +/-25 rotation
    b. 25 gauge stainless steel shutters (XDLT barrel)
    c. Interchangeable lens tubes for different field angles with Ryton BR42B guides (in XDLT barrel) for smooth tube movement
    d. Sturdy integral die cast gel frame holders with two accessory slots, and a top-mounted, quick release gel frame retainer
    e. Rugged steel yoke with two mounting positions allowing 300+ rotation of the fixture within the yoke
    f. Positive locking, hand operated yoke clutch
    g. Slot with sliding cover for motorized pattern devices or optional iris
    3. The housing shall have a rugged black powder coat finish
    a. White or silver/gray powder coat finishes shall be available as color options
    b. Other powder coat color options shall be available on request
    4. Power supply, cooling and electronics shall be integral to each unit.
    5. The unit shall ship with:
    a. Theatrical-style hanging yoke as standard
    1) Includes c-clamp in non-CE markets
    b. 5’ Neutrik powerCON TRUE1 TOP power cable with power input connector
    1) Available options shall include but not be limited to:
    a) Bare-end, Edison (Nema 5-15P) Stage-Pin or Twist-lock type-equipped power leads
    b) powerCON TRUE1 to TRUE1 cables for fixture power linking
    c. A-size pattern holder


    1. The light beam should have a 2-to-1 center-to-edge drop-off ratio
    2. The unit shall provide, but not be limited to:
    a. Low gate and beam temperature
    b. Sharp imaging through a three-plane shutter design
    3. The unit shall provide, but not be limited to:
    a. 5, 10, 14, 19, 26, 36, 50, 70 and 90 degree field angles
    a) Fixture shall accept standard (5-90), EDLT (19-50) or XDLT (5-70) lenses
    b. High-quality pattern imaging
    c. Sharp shutter cuts without halation
    d. Shutter warping and burnout in normal use shall be unacceptable
    e. Adjustable hard and soft beam edges
    4. 19, 26, 36, and 50 degree units shall have optional EDLT lens tubes available for precision, high-contrast imaging.
    5. 14, 19, 26, and 36 degree units shall have optional XDLT lens tubes available for precision, high-contrast imaging and color-correction.


    1. The fixture shall be ETL and cETL LISTED and/or CE rated, and shall be so labeled when delivered to the job site.
    2. The fixture shall be ETL LISTED to the UL1573 standard for stage and studio use
    3. The fixture shall be rated for IP-20 dry location use.


    1. Fixture shall be equipped with a cooling fan.
    a. Fan speed control via a DMX channel shall be possible
    1) Fixture shall honor DMX fan settings but may power budget output to prevent damage if necessary
    2. The fixture shall utilize advanced thermal management systems to maintain LED life to an average of 70% intensity after 54,000 hours of use
    a. Thermal management shall include multiple temperature sensors within the housing to include:
    1) LED array circuit board temperatures
    2) Temperature sensors placed on each individual LED color circuit
    3) Control Temperature
    b. Fixture user shall permit monitoring of temperature sensors via a full color display
    c. Fixtures that do not provide active thermal monitoring of LED circuits and other temperature readings shall not be acceptable
    3. The fixture shall operate in an ambient temperature range of 0°C (32°F) minimum, to 40° C (104°F) maximum ambient temperature.


    1. The fixture shall be equipped with a 100V to 240V 50/60Hz internal power supply
    2. The fixture shall support power in and thru operation
    a. Power in shall be via Neutrik® TRUE1™ TOP input connector
    b. Power thru shall be via Neutrik ® TRUE1™ TOP output connector
    c. Fixture power wiring and accessory power cables shall be rated to support linking of multiple fixtures up to the capacity of a 15A breaker
    3. The fixture requires power from a non-dim source
    4. Power supply outputs shall have self-resetting current-limiting protection
    5. Power supply shall have power factor correction


    1. The fixture shall contain a minimum of six different LED colors to provide color characteristics as described in the Color Section below.
    2. All LEDs used in the fixture shall be high brightness and proven quality from established and reputable LED manufacturers.
    a. Fixture shall utilize Luxeon® C LED emitters
    3. Manufacturer of LED emitters shall utilize an advanced production LED binning process to maintain color consistency.
    4. All LED fixtures (100% of each lot) shall undergo a burn-in test during manufacturing.
    5. LED system shall comply with all relevant patents
    6. Fixtures shall have a PWM frequency of up to 20,000hz to avoid flicker on camera


    1. L70 rating shall be no less than 54,000 hours
    2. All fixtures shall be provided with the minimum warranty:
    a. 5 years full fixture coverage
    b. 10 years LED coverage


    1. Fixture shall be calibrated at factory for achieve consistent color and intensity output between fixtures built at different times and/or from different LED lots or bins
    a. Calibration data shall be stored on the LED array as a permanent part of on-board operating system
    b. All arrays, including replacement arrays shall be calibrated to the same standard to insure consistency
    c. Fixtures not offering LED calibration shall not be acceptable


    1. The fixture shall utilize a minimum of 90 LED emitters
    2. Fixtures shall have a color temperature range of 1900 K – 10,450 K
    3. The fixture shall be available in specialized LED arrays as outlined below:
    a. Source Four LED Lustr X8
    1) Deep Red, Red, Amber, Lime, Green, Cyan, Blue and Indigo LEDs in an array designed for broad spectrum color, light tints, and variable whites. This array shall be the Lustr X8 array as manufactured by Electronic Theatre Controls, or approved equal
    b. Source Four LED Daylight HDR
    1) Deep Red, Red, Mint, Cyan, Blue and Indigo in an array designed to provide a variable white-light adjustable from 1900 K – 10,450 K. (Designed for highest CRI and output between 4000 K and 6500 K) This array shall be the Daylight HDR array as manufactured by Electronic Theatre Controls, or approved equal


    1. The LED system shall use 15-bit nonlinear scaling techniques for high-resolution dimming.
    2. Dimming curves shall be optimized for smooth dimming over longer timed fades.
    3. The LED system shall be digitally driven using high-speed pulse width modulation (PWM)
    1) PWM shall allow for settings to eliminate or reduce flicker when lighting for camera


    1. The fixture shall be USITT DMX 512A-compatible via In and Thru 5-pin XLR connectors
    2. The fixture shall be compatible with the ANSI RDM E1.20 standard
    a. All fixture functions shall be accessible via RDM protocol for modification from suitably equipped control console
    b. Temperature sensors within the luminaire shall be viewable in real time via RDM
    c. Fixtures not offering RDM compatibility, feature set access or temperature monitoring via RDM shall not be compatible
    3. The fixtures shall have integrated radios for City Theatrical Multiverse® technologies
    4. The fixtures shall have integrated Near Field Communication (NFC) hardware for configuration from mobile devices
    5. The fixture shall be equipped with color LCD display for easy-to-read status reports and configuration changes
    6. The fixtures shall have a USB port for software updates, diagnostic reports and configuration saving and loading
    7. The fixture shall be equipped with a two-button, 4 encoder user-interface
    1) Encoders shall be RGB backlit
    8. The fixtures shall be equipped with a hard lockout switch to prevent nuisance bumping of the UI
    9. The fixture shall offer multiple DMX input profile options to include:
    a. RGB – control of all individual LED colors via a three-channel profile
    1) Red, Green, Blue
    b. Single Channel – Control of intensity of prerecorded preset
    1) Intensity
    c. Expanded- Full control of all attributes
    1) Intensity, CCT, Tint, Tuning, Mix, RGB Color Control, Strobe, Curve, Fan
    d. Direct – control of each individual color channel via an independent channel
    1) Intensity, Direct Color Control, Strobe, Curve, Fan
    e. Studio – Control of the fixture in a white-light profile
    1) Intensity, CCT, Tint, Tuning, Strobe, Curve, Fan

    10. All fixtures shall have droop compensation to prevent intensity and color shifts as fixtures reach thermal stability
    11. The fixture shall offer additional user-definable options including but not limited to:
    a. Display time out options
    b. Loss of data behavior options
    c. Red-shift option for tungsten dimming emulation
    12. Fixtures shall have the following local control modes:
    a. Studio- for white light operations
    b. Color- HSI color picker for quick access to selecting and storing user defined colors
    c. Presets- for quick access to default or user defined colors
    d. Effects- for playback of built-in sequences
    e. DMX- for setup of DMX parameters
    13. The fixture shall offer stand-alone functionality eliminating the need for a console
    a. Fixture shall ship with 24 preset colors accessible as a stand-alone feature
    b. Fixtures can be linked together with standard DMX cables and controlled from designated primary fixture
    1) Up to 32 fixtures may be linked
    c. Fixtures in a stand-alone state shall restore to the settings present prior to power cycling, eliminating the need for reprogramming
    d. Fixtures without stand-alone operation features described above shall not be acceptable.
    14. The fixture shall be capable of copying all performance settings to other fixtures of the same type via a 5 pin XLR DMX cable