Replaced a large number of QH lights with LED, been mixed bag regarding
results.

Now need to change out 12 in the kitchen ... these are all 50W wide angle.

Are the multi LED (80/90 chip) type lights better than 3 x 3W or even
the single COB ?

Is one type better than the other for given power rating (light output,
rearwards heat, longevity etc.?)






--
UK SelfBuild: http://uk.groups.yahoo.com/group/UK_Selfbuild/

Rick Hughes wrote:

Are the multi LED (80/90 chip) type lights better than 3 x 3W or even
the single COB ?

The COB ones I have are an array of about 6x6 LEDs on the board, but you
don't see the individual chips as they're embedded in the "yellow
plasticy stuff".

No complaints (since I gave up trying to dim them) they tick a little as
they're warming up.

On 21 Feb 2014, Rick Hughes
grunted:

Replaced a large number of QH lights with LED, been mixed bag
regarding results.

What bad experiences have you had?

Now need to change out 12 in the kitchen ... these are all 50W wide
angle.

Are the multi LED (80/90 chip) type lights better than 3 x 3W or
even the single COB ?

I've fitted quite a few of the multi-LED downlighters now, and am very
pleased with them. IMHO they are equivalent to the original 35W halogens
in terms of beam spread and overall brightness, whereas the one 3-LED one I
bought for the shower light a couple of years ago isn't.

Is one type better than the other for given power rating (light
output, rearwards heat, longevity etc.?)

Only had mine a few months, but no failures yet; not that there should be.
They came with a 5-year guarantee.

I think longevity will depend greatly on where the lamps are sourced;
cheapo models will have much less electronics inside etc and although will
look the same at the outset, will die much sooner.

--
David

On Friday, February 21, 2014 12:02:40 PM UTC, Rick Hughes wrote:
Replaced a large number of QH lights with LED, been mixed bag regarding

results.



Now need to change out 12 in the kitchen ... these are all 50W wide angle.



Are the multi LED (80/90 chip) type lights better than 3 x 3W or even

the single COB ?



Is one type better than the other for given power rating (light output,

rearwards heat, longevity etc.?)


I've just done a lighting refit in my hall - 4 x 1 x 2+ metres - using 4 off MR16 3W COB LED bulbs in double downlighter holders.

The COB bulbs have a noticeably bigger light spread than single element MR16 type LED lights, and light the area excellently. The holders are machined from solid aluminium and barely get warm.

The one gripe I do have and am querying this with the supplier is that the supposed 'Warm White' is harsher than other LED lights I have.

Rob

On Sunday, February 23, 2014 9:30:50 AM UTC, robgraham wrote:

I've just done a lighting refit in my hall - 4 x 1 x 2+ metres - using 4 off MR16 3W COB LED bulbs in double downlighter holders.

The COB bulbs have a noticeably bigger light spread than single element MR16 type LED lights, and light the area excellently. The holders are machined from solid aluminium and barely get warm.



Hi,I'm currently evaluating LED down lighter options for SWMBO'S refurbished kitchen. Other poster's experiences are extremely valuable. Please, any chance that posters robgraham, lobster, andyburns.. could identify the exact downlighter makes/models/watts etc that their posts concern?

TIA

wrote:

any chance that posters robgraham, lobster, andyburns.. could
identify the exact downlighter makes/models/watts etc that their
posts concern?

http://www.ledhut.co.uk/spot-lights/gu10-led-bulbs/new-4-5-watt-gu10-cob-bulb-wide-beam-angle.html

Daylight flavour.

On 23 Feb 2014, grunted:

Hi,I'm currently evaluating LED down lighter options for SWMBO'S
refurbished kitchen. Other poster's experiences are extremely
valuable. Please, any chance that posters robgraham, lobster,
andyburns.. could identify the exact downlighter makes/models/watts
etc that their posts concern?

Su I've used both the following (ie both 240V and 12V versions - I can't
see anything between them, performance-wise)

http://tinyurl.com/b54u7ke (or http://www.ledhut.co.uk/gu10-smd-led-220-
lumens-45-watts-equiv-best-internet-price.html)

http://tinyurl.com/d89k386 (or http://www.ledhut.co.uk/spot-lights/mr16-led-
bulbs/mr16-smd-led-20-pice-best-internet-price.html)

Both were the WW (warm white) versions

HTH

--
David