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    criterionlx
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LED Dimming on Smartpack

Hi, not sure this is the right forum so move is needed.

We have a 6 way wall mounted Smartpack dimmer which runs our houselights. We are looking to move to LED and wonder if you have any suggestions on manufactures that give a decent dimming curve on the LED.

We have tried BELL Lighting and the fade-out is perfect but the fade-up has a threshold of some sort of we get a 'ping' on then continue to fade up.

At this stage we have not looked at the dimmer curves etc on the rack itself as looking for the easiest  solution.

Any pointers much appreciated

CHRIS

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  • criterionlx said:
    We have tried BELL Lighting and the fade-out is perfect but the fade-up has a threshold of some sort of we get a 'ping' on then continue to fade up.

    That's pretty much as good as mains-voltage dimmable LED retrofit lamps get.
    It's probably the best that's physically possible. Our own S4 Mini LED is similar, coming on at under 5% output then fading smoothly from there to full and back to 0%.

    This is due to the physics of LED retrofit lamps - most are considerably worse!

    As Dan said, to get anything better than that you need something that takes hard-power and a separate control signal, DMX strongly recommended.
    - Be sure to test them anyway, DMX-controlled doesn't necessarily mean "good" dimming!

    That said, when testing LED fades, don't look directly at the diodes in the luminaire unless you will have to (eg chandeliers), look at the light level on the illuminated surface(s).
    Most LEDs don't change colour temperature as they fade like tungsten does, and that can make the 'very low level' feel brighter than it really is.



    [edited by: Richard at 12:21 PM (GMT -6) on Mon, May 12 2014]
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  • criterionlx said:
    We have tried BELL Lighting and the fade-out is perfect but the fade-up has a threshold of some sort of we get a 'ping' on then continue to fade up.

    That's pretty much as good as mains-voltage dimmable LED retrofit lamps get.
    It's probably the best that's physically possible. Our own S4 Mini LED is similar, coming on at under 5% output then fading smoothly from there to full and back to 0%.

    This is due to the physics of LED retrofit lamps - most are considerably worse!

    As Dan said, to get anything better than that you need something that takes hard-power and a separate control signal, DMX strongly recommended.
    - Be sure to test them anyway, DMX-controlled doesn't necessarily mean "good" dimming!

    That said, when testing LED fades, don't look directly at the diodes in the luminaire unless you will have to (eg chandeliers), look at the light level on the illuminated surface(s).
    Most LEDs don't change colour temperature as they fade like tungsten does, and that can make the 'very low level' feel brighter than it really is.



    [edited by: Richard at 12:21 PM (GMT -6) on Mon, May 12 2014]
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