ARRI STUDIO T24

Last Updated 11 hours ago

Overview

Key specifications

Specification	Details
Fixture type	Tungsten Fresnel
Lamp options	24,000W monoplane or approved CP99 20,000W monoplane, 230V
Lamp base	G38
Operating voltage	230V for the listed lamps
Nominal colour	3,200K at the lamp’s rated operating voltage; dims warmer
Fresnel lens	625mm
Focus range	14°–55° on the product page
Lamphead / version weight	61kg net on the product page; approximately 64kg in the family poster
Mounting	28mm junior spigot
Scrim / barndoor	740mm / 740mm
Dimming / control	External tungsten-compatible dimmer; no internal DMX receiver
Protection	Class I; IP20
Dimensions (H × W × L)	1126 x 1040 x 830 mm excluding pin; product-page reference

Technical reference: ARRI specifications.

Strengths and limitations

• Strengths: a conventional focusable Fresnel field, a replaceable tungsten lamp and predictable warming during a dimmer cue.
• Trade-offs: substantial heat and electrical consumption for the light produced; no internal colour mixing, wireless receiver or electronic tint adjustment.

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Practical uses

Setup	Working approach
Large-scale warm sunlight	Use the lamp from a distant stage or exterior position when a substantial warm beam must cover a large set. Check the exposure and shadows across the full playing area.
Big soft-source feed	Flood the head onto a large bounce or heat-appropriate diffusion arrangement from the required distance. Keep rigging, fabric and crew access clear of the hot fixture and its direct beam.
Long-throw hard backlight	A concentrated beam can reach across a large set, but it still has a defined field. Use the beam-diameter information alongside lux, then verify the intended shot on the camera.

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Output and colour

The ARRI family photometric poster gives these nominal values at 15m for the 24,000W nominal configuration. The focus angles describe the poster’s photometric configurations; they can differ from the rounded travel range on the product page.

Focus / beam	Centre illuminance	Beam diameter
Spot / 13°	14,356 lux	3.42m
Medium / 30°	5,111 lux	8.04m
Flood / 56°	2,316 lux	15.95m

The narrow spot reading describes a smaller field. Use the beam diameter and the required coverage alongside illuminance, especially when feeding a diffusion frame. The poster does not identify every lamp code or test-voltage detail; a differently lamped rental unit needs its own meter check.

Tungsten produces a continuous spectrum, but its colour depends on filament temperature. Electrical dimming lowers output and warms the light. Use scrims, a suitable neutral-density arrangement or a change in distance when maintaining the lamp’s rated colour is more important than dimming from the console.

Correcting tungsten to daylight with full CTB costs a substantial amount of light. Compare the finished corrected source with an HMI or daylight LED at the subject, rather than comparing the uncorrected lamp’s wattage or peak lux.

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Power and lamp requirements

230V for the listed lamps. Fit a lamp whose voltage, wattage, base and approved operating position match the specific head. A 120V lamp must not be connected to a 230V supply simply because a family listing covers both markets.

These are resistive tungsten loads controlled from a suitable supply and external dimmer, without an HMI ballast. The lamphead does not contain an auto-ranging LED power supply. The connector, cable, dimmer and distribution must be rated for the fitted lamp.

For scale, 24,000W ÷ 230V is approximately 104.3A at rated full power. This is a nominal steady-state calculation for that lamp voltage, not a circuit recommendation; tungsten inrush and dimmer/distribution limits remain part of the installation.

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Control, cooling and camera operation

Intensity is controlled by the external dimming system. A DMX dimmer rack can provide console control, but a DMX cable does not connect directly to this lamphead. Focus, tilt and barn-door shaping remain mechanical.

Keep the ventilation path open and leave room for hot air around the head. The fixture itself has no cooling fan; vibration, filament noise or the external dimmer can still be relevant on a quiet stage. Check any visible flicker at the intended shutter and frame rate.

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Modifiers, rigging and the working package

Item	What to specify
Front accessories	740mm scrims and 740mm barn-door reference for this head. Similar wattage does not guarantee a matching accessory frame.
Soft light	Use a heat-rated, explicitly compatible bank or a separately supported bounce/diffusion frame. Include the correct speedring where required.
Support and clearance	Choose the support for the head, front accessories and leverage at the required tilt. Keep the supply cable clear throughout movement.
Lamp and spares	Include the correct lamp code and voltage, any required adapter, and an appropriate spare for location work.

ARRI’s family reference specifies a minimum 11m to the illuminated surface and 1m around the fixture. The current lamphead label and manual control the actual installation. Keep hot-light accessories clear of the lamp and allow cooling before handling or packing.

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Alternatives and related fixtures

Fixture	Why compare it
ARRI ARRIMAX 18/12	A related head with a different lens, power class or optical design; compare the actual modifier, output and support package.
ARRI Orbiter	Colour-tunable LED control and an interchangeable optical system where heat, mains load or rapid colour changes drive the choice.
ARRI M90	A high-output daylight discharge package when the scene needs daylight rather than tungsten; ballast and lamp requirements differ.
ARRI STUDIO T12	A smaller 10/12kW tungsten Fresnel when it supplies the needed exposure and coverage.

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Manufacturer and handling notes

The ARRI STUDIO T family reference places the T24 above the T12 for large tungsten applications. Its output figures are useful only alongside the much larger head and support package. Rental comparisons should include the fitted 20kW or 24kW lamp, the distribution and the ability to move the head safely between positions.

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Operating references

• ARRI lamphead manual and operating limits
• ARRI Photometrics: lamp selection, focus and beam planning

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Rental and used-fixture checks

• Confirm the exact lamp code, voltage and approved wattage; a family name alone is insufficient.
• Inspect the lens or protective glass, mesh, reflector, holder and front latch for damage.
• Check focus, yoke movement and tilt lock with the intended accessories fitted.
• Confirm the actual working weight, stand or rig, supply connector and rated external dimming package.
• Arrange the appropriate spare lamp, protective packing and cooling time before collection.

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Documentation and specifications

• ARRI STUDIO T24 specifications and downloads
• ARRI STUDIO T12 T24 – Overview Poster
• ARRI STUDIO T12 T24 – User Manual
• ARRI Studio T24 – Photometric Files (IES) Sep2011

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