Re: Dichroic to Dimmable LED - Umm.....

[Kenneth Watt <kwatt@xxxxxxxxxxxxxxx>]

Hi Gareth,

I've been going down the same route and, although I'm still waiting on a
couple to test, thus far the "dimmable drop-in replacement"
doesn't work with the X10 modules.

They will dim, they will ramp up and down within a certain range but they
cut out at the upper and lower ends of the dimming range. Apart from which
they produce horrendous line noise.

So far I've tried both dimmable GU10 (2 versions, 1 the Cree LED) and a
liquid cooled LED SES fitting. I've also fitted a load of GU4 LED
replacements and, despite being advertised as a "drop-in"
replacement for the standard bulbs, they do need pukka LED drivers fitted
and not the halogen transformers or the LED bulbs have a nasty habit of
overheating and blowing themselves to bits, literally.

They do not produce the same sort of light (different temperature) or as
much light IMO as a standard bulb will.

My advice is that they are fine as lights that you want to run for extended
periods to see where you're going or for security purposes but, to have
them as replacements for normal lamps totally... I wouldn't advise it based
on the current crop.

HTH

K.


On 12 Jan 2010, at 17:13, Gareth Cook wrote:

> Been looking at dimmable LED swapouts for a while now - there was also
a
> post of the AH site about this.
>
> To the uninformed, this is a minefield. How do I know the LED I'm
looking
> at will give roughly the same "light" (not power) as the
dichroic. Or
> better ?
>
> Does anyone know the LUX , colour level or whatever s atsnard 50w
dichroic
> bulb will chuck out ? And therefore we can match the best dimmable LED
to
> that. Not keen on a buy and try method when I need to replace so many,
and
> the cost of the units aren't that cheap.
>
> Mostly, I've got 50w or 35w reflekto lamps - the units that throw as
much
> heat and light back down. I'd love to change all these for dimmable
LED's
> (which will hang off the CBUS dimmer) and therefore also be able to
seal
> the voids left in the loft between the insulation.
>
> G.
>
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number
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>
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