Originally Posted by GlenC
There are many aftermarket bulb options. When going for the cheaper ones, you may be getting generic bulbs. At least I know I am getting genuine Osram bulbs from my distributor. They apparently do not have the Philips UHP 200W 1.0 P21.5. Next, and the most important to me, is the rate of lumen fall-off and more importantly, the spectrum of the bulb. These two factors are most influenced by the manufacturing process and the gas mixture in the bulb. AFAIK, the retail on the Osram is somewhere between $200-$250. The wires are important, and I believe they are rated at 20kV. IIRC, striking voltage is around 15K.
I know some who have purchased aftermarket replacements for the 5009S and received very poor performance.
Well, I'm not really sure what you mean by aftermarket, since it can be many different things. First off, I only buy from main distributors and at least two of the links I gave I know sell real Osram. But I think all three are OK. Which I did that because people were asking where to buy in the forum and by PM.
I didn't bother posting the Osram number 69471 since it was clearly in the first link, plus I'm more use to using the specs number. Also I was looking more for Philips at that time, and with nobody ever posting any real info on a replacement, I only spent enough time to find one that works.
But the fact is Osram 69471 - P-VIP 200/1.0 P21.5a - is a aftermarket. That is what the "a" on the end means. That is the only reason you can buy it. Its also a 5KV ignition, not 15KV. It would have a "h" before the "a" if it was 15kv.
Philips "aftermarket" will usually have a PHI in front of a number, but I never found it and just went by the specs number. Which most distributors use a form of that number, but some like to change it to begin with something like RPP,ect. Especially if its Osram they are selling.
I've heard rumors of fake bulbs with names stamped on but its rare, but I think its kind of cleaned up by now. I never ran into one and I've been involved in one way or another, replacing many, many hundreds of bulbs in rear projection.
I'm not trying to be difficult or anything, but I really don't care what the retail price is. But I didn't bother putting links to distributors that normally on sell to people that have accounts running a business. Even though almost all of them will sell to the public in some form. To be honest, if you are paying much more than the links then you are being over charged.
Yes, the Jury is still out I reckon on how these lamps will last but I was never impressed with Iwasaki that JVC used at that time. Plus it appears nobody even knows who they used for the latest models. But the Philips I have is working fine at 250 hours, so we will see. If it don't work out, then thats the way it goes sometimes, yet I still rather have a Osram or Philips built lamp, than Iwasaki.