"Andrew Gabriel" wrote in message
...
In article ,
"nightjar" writes:

"John" wrote in message
news
..and that is cheap!

Any comments on life? Output?

The manufacture claims 4,000 hours. Compared to conventional filament
lamps,
you should get twice the light output and four times the life.

Dubious. For a halogen, you can design for higher light output
colour temperature and efficiency, or for longer life.
You can't get both options together, at least nowhere near twice
the light output and 4 times the life -- those figures aren't
even available separately.

I can verify that the light output is considerably higher than a 40W
conventional filament lamp and would not be surprised if the claim of double
the output were true. However, I don't have an hour meter connected to my
lights, so I can only repeat the manufacturer's claim of 4,000 hours. I
would say that, since I started using these lamps, all the 1,000 hour lamps
in areas with similar use patterns have had to be replaced at least once.

Colin Bignell