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ARRI continues to refine its L-Series with the L7-TT 7" Tungsten LED Fresnel with Active Cooling. The key characteristic of any Fresnel is flood to spot capability and the L7-TT offers an impressive beam angle adjustment of 15-50°.
The L7-TT is a tunable tungsten balanced source, allowing you to match ambient light and existing fixtures with color temperatures from 2,600K to 3,600K. The on-board controller allows dimming from 100-0% and full minus green to plus green adjustment enabling matching of specific shades. All functions can be controlled via DMX, an ideal feature for broadcast studios, while RDM permits monitoring of the light's status. This version of the L7 has Active Fan Cooling, allowing a reduction in weight and size. The fan remains on during use.
The fixture produces the equivalent of a 1,000W tungsten light while drawing only 160W for a savings of up to 75% over traditional fixtures. And low draw and heat means lower HVAC costs in the studio and a quick return on investment. You can run about ten L7-TTs from a 20A, 120V outlet as opposed to two 1,000W tungsten fixtures. The L7-TT has a 90 - 250VAC on-board power supply for worldwide use. This version of the L7-TT is a stand mount model with a silver/blue finish.
Variable Beam Angle: 15 to 50 Degrees
A key element of the versatility of traditional Fresnels is the ability to spot and flood the beam as needed. Whether it's a flood field for a pullback shot or a tight spot for a bright highlight, the continuous focusability of the L-Series performs lives up to your expectations. And, unlike traditional Fresnels, which have significant light waste in spot focus, the efficient L-Series optical system maintains the same field lumens in all focus positions.
True Fresnel Lens Light Characteristics
Whether shaping the beam to isolate talent and set elements or cutting the field to eliminate spill light, controllability is crucial to lighting. L-Series Fresnels provide the same ability to cut and shape with barndoors and flags that we have come to expect from conventional Fresnels.
Even Light Field
Clear, defined shadows traditionally have been solely a trait of single source tungsten and daylight fixtures. ARRI L-Series Fresnels provide the same single shadow properties lighting designers expect, delivering natural results.
With the L7-TT, white light can be adjusted from 2,600 - 3,600K to match the ambient light, other fixtures or specific color shades.
The light is cooled by a fan allowing ARRI to reduce the weight and size. The fan remains on during use.
True Blue-style focus knobs provide the precise adjustment and rapid flood-to-spot that users enjoy from manual, mechanical control. Knobs on both sides of the fixture ensure easy access from all positions, eliminating the need for awkward reaching around the fixture. Full flood-to-spot can be achieved in only three turns.
The ARRI sliding stirrup design enables precise adjustment of the fixture's center of gravity, to compensate for front-end accessories. It also gives the option of pulling the fixture back and reducing its hanging height.
The strong tilt lock provides extremely secure locking, eliminating movement and slippage and ensuring that the fixtures will stay where you put them.
For broadcast studios, remote fixture control is of paramount importance, and all functions of the L7-TT are controllable through DMX. The L7-TT is also RDM compatible, providing bi-directional feedback and reporting of system status, hours on the light engine, calibration data from the internal color sensor and current DMX address with the ability to remotely assign and address all fixtures in a DMX network.
The on-board controller has manual intensity adjustment and additional controls for color temperature as well as plus/minus green to adjust the hue at the touch of a button.
L-Series fixtures reduce electricity usage by 75% and their LED light engines last 200 times longer than normal bulbs, when compared to conventional tungsten Fresnels. These and other cost-saving attributes will combine to affect a rapid return on your investment.
Lighting teams working on location will love the versatility the L7-TT achieves with its reduced form factor. Several ARRI L7-TT Fresnels can be run off a single 20A, 120V outlet, as opposed to only two 1,000W tungsten Fresnels.
The L7-TT is an expansible platform designed to accept the latest enhancements in LED chip performance. The firmware is upgradeable through the USB port on the rear of each unit, accommodating future control protocols such as ACN.
At 3,200K, 15° 7,444 lux/692 fc at 9.8' (3.0 m) 2,680 lux/249 fc at 16.4' (5.0 m) 1,367 lux/127 fc at 23' (7.0 m) 827 lux/77 fc at 29.5' (9.0 m) At 3,200K, 30° 2,133 lux/198 fc at 9.8' (3.0 m) 768 lux/71 fc at 16.4' (5.0 m) 392 lux/36 fc at 23' (7.0 m) 237 lux/22 fc at 29.5' (9.0 m) At 3,200K, 50° 916 lux/85 fc at 9.8' (3.0 m) 330 lux/31 fc at 16.4' (5.0 m) 168 lux/16 fc at 23' (7.0 m) 102 lux/9.0 fc at 29.5' (9.0 m)
In the Box
Arri L7-TT 7" Tungsten LED Fresnel with Active Cooling (Silver/Blue, Stand Mount)
2,600K - 3,600K Continuously variable correlated color temperature Full minus green to full plus green adjustment
Tolerance: +/- 100K (nominal), +/- 1/8 Green-Magenta (nominal) Estimated lifetime color shift: < 200 K
100 - 0%
Active, fan stays on when in use
-4 to 113°F (-20 to +45°C)
5-Pin DMX in and through, on-board controller Mini-USB: DMX setup, fixture status and firmware upgrade through PC software Remote Device Management (RDM): DMX setup, hour counter and standard RDM commands
Stand mount with 1 1/8" (28 mm) Junior pin
Certification and Compliance
CE, GS, FCC, cNRTL, CB, ISO9001:2000
Full flood position w/ yoke w/o Junior pin: 16.6 x 14.7 x 13.7" (423 x 374 x 349 mm) Full spot position w / yoke, w/o Junior pin: 16.6 x 14.7 x 17.8" (423 x 374 x 454 mm) Lens diameter: 6.88" (175 mm) Accessory size: 7.7" (196 mm)
18 lb (8.2 kg)
Arri L7-TT 7" Tungsten LED Fresnel with Active Cooling (Silver/Blue, Stand Mount) Review