Originally Posted by donaldk
The P version is a 10K or was it 20 premium over the regular edition, according Peter in one of the other threads, recently. Is that a dialed down for additional contrast DP424B, or a fulll blown 32B?
Edit: Oops, there's already a C series, no longer the B.
The DP4K-P is built on the DP4K-23B chassis. Both can accept upto a 4kw lamp.
I have had a Barco DP4K-23B installed in my theater for the past 2 years and absolutely love it. I just got the new Barco Alchemy Board so it can now handle 4K @ 60hz and 4K 3D. It also can handle 4K alternative content upto 4K @60hz using displayport and it also has a 4K hdmi input. The new Alchemy board is amazing. It takes my two year old projector and makes it the first 4k @60hz DCI projector on the Market. Barco's dedication to their existing customer base is second to none.
Because of Barco's dedication to their customers, I just purchase a Barco DP4K-P from Alan Gouger. I am installing it this week at a second home I just bought. After having a DCI machine, I could never go back to a consumer projector. The other good thing about the 23B chassis and the Post model is that they both work on standard 240v two phase power which is typical to most all residential power in the USA. The 32B chassis can accept upto a 6kw lamp but it only works with three phase commercial power.
The 23B can be modified, just as the P model is, to reduce light output and to increase contrast. Using the same P model internal aperture and a high contrast lens, both units can be pretty comparable. The P unit has some sort of light absorption in the light engine that does help it still have a higher contrast ratio than the 23B, but not by a huge margin.
A stock version of the 23B has about a 1800:1 contrast ratio. A stock version of the P has about a 2300:1 ratio. If you had the P aperture and a high-contrast lens to the 23B you will get very close to the 2300:1 mark. With help from Alan, and lots of trial and error, by using a more aggressive aperture in the units and further reducing the aperture in the lens, we are seeing contrast numbers around the 4000:1 mark.
Anyone interested in DCI projectors should follow the new DCI forum at www.dci-forum.com
. Lots of great info there. Also anyone interested in any of the 4K DCI models or even the new small chassis DCI 2k models should speak with Alan. I know AVS is going to soon be selling a custom made NEC s2k laser projector that will be modded for higher contrast, which will really make it probably one of the best 2K projectors on the market!!