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Posted by JM on June 15, 2005, 7:07 pm
quoting:
>
>Not only can't Jasco make the lamp (what you call the bulb) brighter,
>but they are not going to make a new dome just for you. If you don't
>like the fixture your only option is to bring it back.
No, I didn't say that. I'm looking for general changes, that's all. But
judging from Jasco's responses, they don't care. For some of you trolls from
misc.consumers bringing it back isn't going to do squat. Jasco doesn't care.
They aren't going to change a thing. What would it take for them to change:
federal intervention? Millions of returns? Unfortunatly, that's the way the
world is run today. Money comes first.
>Now, let's take a look at the fixture manufacturers claims.
>
>The GE 55-watt 2D lamp is rated at 4000 lumens after 100 hours
>(Initial Lumens) and 3400 Mean Lumens (that is after 40% of rated
>life.)
>
>The light output of 120-volt 60-watt incandescent lamps vary with
>design life, type of diffusing coating, and a few other factors . I
>would say that the GE Model 60A, which is a 120-volt, 60-watt,
>1000-hour, A-19 lamp with conventional diffusing coating (not Soft
>White) is a good example of a "standard" incandescent lamp. This lamp
>is rated by GE for 856 initial lumens.
>
>So, based on initial bare lamp lumens only, the 55-watt 2D would be
>equivalent to 4.62 of these 60-watt incandescent lamps. However, based
>on mean lumens, the 55-watt 2D is equivalent to only 3.93 of these
>60-watt incandescent lamps. (Your evaluation took place with a new
>55-watt 2D lamp, so the mean lumen issue is not relevant to your
>problem.)
>
>But as you have stated, bare lamp lumens are not the whole story. The
>fixture must be designed to get the light produced from the lamps out
>of the fixture and on to the work surface. This involves not only the
>diffuser (dome) but also the reflector. I agree with your conclusion
>that the manufacturer's claim is based on the light produced by the
>55-watt 2D lamp, with a bit of exaggeration thrown in, and not the
>light out of the fixture.
Thank you.
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