Which bulb?

[Ash]

I need to replace a bulb in the Chromega F..

The bulbs are 24V 250W ELC Dichroic Halogen (also say "USA 20" but I don't think that's important).

I've found these that are identical even down to the logo on the side:
http://www.kitkave.co.uk/shop/lighting/lamps/class_a_projection/item/2387/?affid=froogle
http://www.kitkave.co.uk/uploads/products/product_2387_1_large.jpg

However, these appear to have the same specs and a much longer lifespan:
http://www.djdepot.co.uk/index.php?main_page=product_info&products_id=524
http://www.djdepot.co.uk/images/dichroic.jpg


Anybody have any experience? Should I stay with the identical ones or try out the longer life variants?

[Nick_3536]

The second one doesn't say how it's rated. The difference may just be how they are rated. The bulbs are likely the same.

The on/off of an enlarger isn't great for the life of a bulb. OTOH do a bit of math. 50 hours is 3000 1 minute prints. For colour when you're likely in the sub 10 second range it's a lot more.

[NER]

Either one will work. So will the following:

Philips 13631 ELC/FA 24V250W 231035 (Japan);
Osram Xenophot 64653 HLX ELC 24V250W GX5,3 (Germany).

N. Riley
http://normanrileyphotography.com/

[Ash]

Thanks N. :)

[kev curry]

Ash, I've been using one of these babies for about 16 months....... they claim to last for 500 hrs and at 15 bangers for two, well...... :)
http://www.djstore.com/item/lamps/lam2elc.htm

[Jon Shiu]

I wonder if the color temperature would be identical? If your enlarger uses 4 bulbs, then it might be good to replace all 4 at once.

Jon

[Nick_3536]

If you're printing colour best to.

The other thing is they were all installed at once. All treated the same. Odds are they'll all go about the same time.