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FA N M O D E S a n d LO W N O I S E O P E R AT I O N
The Proteus Radius is a high-performance fixture suited for multiple applications. For noise
critical environments such as Theater, Opera or Orchestra Halls, it offers various fan operation
modes which remove any distraction for the audience and performers. Fan Modes can be changed
remotely via the DMX control channel, allowing the fixture to offer high output or whisper
silent operation at a moment's notice. All Fan Modes smoothly transition over a brief time,
preventing unwanted attraction to the fixture.
Auto (Default)—Fans only run at the speeds needed to keep the LED engine within a safe
temperature range and ensures optimal performance of the fixture. If possible, they will turn-
off, for example, when the fixture is dimmed to a low intensity. Fans sense the ambient and
fixture temperature, and will always try to keep noise levels to a minimum. The fixture output
will only reduce when the LED engine cannot be cooled down to its safe operating range due to
high ambient temperature.
NOTE: Recommended for daily operation.
High—Fan speeds are increased throughout for the most efficient cooling of the fixture. This
mode will increase wear on the fans and should only be utilized in exceptional circumstances.
Fans will always run, even if the fixture is dimmed down. Fixture output is kept at 100% unless
the LED engine temperature reaches an unsafe temperature at which point the fixture will
reduce power carefully to ensure continued safe operation. This mode is only required in very
high ambient temperatures when automatic fan speed adjustments are not desired.
Low Noise Modes
For very critical noise environments, the fixture offers two additional Low Noise Modes for
silent operation. The fixture output will be reduced, yet due to the extremely high luminous
flux, the fixture still offers outstanding performance. In Low Noise Modes, all parameters of
the fixture operate more quietly with reduced fan speeds.
Low/Studio - 75-80% max output, fans run at low speed.
Mute – All but one fixture fan is turned off for whisper-quiet operation. The fixture LED power
output is reduced to 25%.
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