Brighter, lower-cost neutral-white Rebels!

[jeffosborne]

I've been using 80-lumen per watt neutral white Rebels for various projects over the past year, in photography lights, daughter's porch light, secondary home lighting. I had paid $4.98 each for 15 of them this January.

Last weekend I went to order 10 more of them at Future Electronics, and found that they have now available 90-lumen per watt neutral whites for $3.15 each, and 100-lumen per watt neutral whites for $3.97 each!! Because I do not know what bin I will be getting, I ordered 10 of each. I am excited about this improved output! Hope the bins I get look good.

I am preparing to install the 21st Rebel LED light in my home, just outside and above the front door. Most of my lights are set to do dusk-to-dawn, with a photo cell in the attic. The new light fixture is shown below: Rebel LED rests on a 1/16" thick piece of aluminum, and then is arctic-alumina'ed to a 3/4x8" piece of 1/8" thick aluminum bar.

Hey - a question: what is the most efficient AND AVAILABLE Cree neutral-white LED in a single-die emmiter? Who can answer that for me?

Thanks,
Jeff O.

 

[mudman cj]

For something of comparable size to the Rebel, that would be a Q2 brightness bin 5A tint. That is the XP-E package. In the XR-E package there are Q3 brightness bin 5A tint emitters out there.

 

[WeLight]

I've been using 80-lumen per watt neutral white Rebels for various projects over the past year, in photography lights, daughter's porch light, secondary home lighting. I had paid $4.98 each for 15 of them this January.

Last weekend I went to order 10 more of them at Future Electronics, and found that they have now available 90-lumen per watt neutral whites for $3.15 each, and 100-lumen per watt neutral whites for $3.97 each!! Because I do not know what bin I will be getting, I ordered 10 of each. I am excited about this improved output! Hope the bins I get look good.
They would be 100 lumen parts not 100 lumen per watt?

I am preparing to install the 21st Rebel LED light in my home, just outside and above the front door. Most of my lights are set to do dusk-to-dawn, with a photo cell in the attic. The new light fixture is shown below: Rebel LED rests on a 1/16" thick piece of aluminum, and then is arctic-alumina'ed to a 3/4x8" piece of 1/8" thick aluminum bar.

Hey - a question: what is the most efficient AND AVAILABLE Cree neutral-white LED in a single-die emmiter? Who can answer that for me?

Thanks,
Jeff O.

They would be 100 lumen parts not 100 lumen per watt?

 

[jeffosborne]

Yes, 100 lumen at 350ma, and 180 lumen at 700ma:

http://www.futureelectronics.com/en...tters/white/Pages/1099704-LXML-PWN1-0100.aspx

Seems like a bargain, but I do wonder how it compares to a comparable Cree part...

Jeff O.

 

[Tekno_Cowboy]

...
Seems like a bargain, but I do wonder how it compares to a comparable Cree part...

Jeff O.

I wouldn't mind knowing that myself...
looks like it's time for me to do my homework :thinking:

 

[HarryN]

Well, this isn't an exact comparison, but here is the Cree web site link:

http://www.cree.com/products/xlamp.asp

It looks like they are similar, which is what you would expect from two, high end competitors.

BTW - how are you driving all of those LEDs ?

 

[saabluster]

.

 

[LEDAdd1ct]

Beamshots?

 

[bshanahan14rulz]

xp-e looks like it has higher bins, but just by a little.

 

[BillyNoMates]

I'd be interested to see what you make of the colour tint.

I've been using the 80lumen part for some time now and I have been reasonably happy with the colour of the light - it is much better for seeing with than the more typical cool-white super high output bins (which look soooo blue in comparison).

If this new bin moves more to the cool-white like spectrum, I don't think I'll be changing. I'm actually considering 'trading down' to a warm-white LED (60lumen at 350mA) for my next lamp project....

In the mean time I'll keep an eye on this thread and see what you make of them.

 

[LukeA]

I'm actually considering 'trading down' to a warm-white LED (60lumen at 350mA) for my next lamp project....

You won't go back :wave:

I'm building a set of outdoor lights--well, actually two identical sets. One is 7A tint for normal use and the other is WC to match the CCT of the cool white LED icicles and other lights that go up in the wintertime. The warm white set will be up for 10 months out of the year.

The barely perceptible drop in lumens is completely made up for (and then some) by the better tint. That's just IMO, but the large number of people buying Malkoffs and such with warmer tints seems to corroborate.

 

[bshanahan14rulz]

warm tint LEDs rock! my p4 xp-e is a 7c :twothumbs

 

[SafetyBob]

I have been using warm whites for the darker living areas of the house...living room and especially the den. The neutral whites have perfectly blended in with the cool white (think cheap flourescents fixtures from China at Lowes) that I have in utility areas and kitchen area.

I have to ask too, how are you driving your led's.....specifically, the one's for the front door and how about those photographic lights? What's going on there? Could you give us a little picture or something......

Bob E.