Lumen output for undercab xenon vs LED??
This was posted on the kitchen forum. I'm also interested in the answers, so am taking the liberty of copying it to this forum:
Posted by paul_ma (My Page) on Fri, Mar 9, 07 at 0:00
I have been trying to decide between xenon and LED undercab lights. One clear difference is that the LEDs aren't dimmable. That left me wondering whether the LEDs will produce a suitable amount of light.
So I have tried to compare the output of alternatives. I considered Kichler Xenon fixtures, Seagul strips, and LEDtronics LEDs. My first problem was getting comparable numbers. LEDtronics quotes lumens, but the others only give watts per bulb. After some hunting, I found a value of 250 lumens for an 18w xenon bulb, and claim that was roughly equivalent to a 25w incandescent bulb.
The Kichler fixtures have about 1 18w bulb / 6", or 500 lumens per linear foot.
The Seaguls linear seems to support anywhere from 2 bulbs every 4" to 1 bulb every 6", and bulbs from 3w to 18w. So that leads to brightness of anywhere from 65 to 1500 lumens per foot.
The LEDtronics "warm" lights are about 40-50 lumens per foot.
That relieves my concern about the lack of dimmability in the LEDs. Instead, it seems like they are MUCH dimmer than all but the most sparse Seagul installation. The Kichler fixtures, even when dimmed 50% would be more that twice as bright as the LEDs.
The above is all just cranking numbers. I don't know anything about lighting, about what a reasonable installation of the Seagul might be, or how many lumens is appropriate for undercab lighting. But it certainly sounds like the LEDs might be more suitable as ambience lighting than as task lighting.
Does anone have better data or insight into this?
Where have out lighting experts gone? (I suppose we burned them out with too many questions.)