CurtPalme.com Home Theater Forum

CIR Engineering · Posted: Sat Mar 05, 2011 5:52 pm Post subject: P43 LUG Tubes: Who is interested?

Is anyone interested in brand new (NOS) Panasonic P43 LUG green tubes? These are the rapid decay green phosphors designed for 3D stereoscopic rendering.

I have a line on quite a few of these in Japan and am thinking about importing them all, but it is a lot of money. The tubes will run around $1400 plus shipping from me in Chicago. If you are not in the USA I could probably arrange to have one or more drop shipped to any part of the world.

I just want to get an idea who might want these before I bring them all in Wink

Kind regards,
craigr

Tim in Phoenix · Joined: 21 Oct 2006 Posts: 4409 Location: Phoenix

Guys!

I have a few complete Marquee green housings with tinted C element (clear available also) for $150 to $250 plus shipping to house your P43 LUG.

.

JamesAB · Posted: Fri Mar 11, 2011 9:46 pm Post subject:

I haven't been able to find a lot of information or feedback on these. Is there a detailed thread somewhere?

Are people pleased with the P43 LUG green tubes for 2D performance or are there any color issues?

Tim in Phoenix · Joined: 21 Oct 2006 Posts: 4409 Location: Phoenix

dvh99 · Joined: 25 Dec 2009 Posts: 2158 Location: nederland

these work perfectly well for 2d at 60hz.
i am tight on money....... still, otherwise i would have been all over these.

btw, i have a pt22 green currently in use at 60 hz.

zGman · Joined: 22 May 2006 Posts: 599

I am also using P43 (PT22-30) at 60Hz in BG1209S - there is no "flicker" - that is just mis-information.

There is less light output, but not so much that anyone would notice. The primary
color is shifted slightly, even with a grn c-element, but again - not so much that
anyone would notice. You would need a direct comparison with a photospectrometer
to tell the difference, and i have other things to do just now - maybe next week...

G

Tim in Phoenix · Joined: 21 Oct 2006 Posts: 4409 Location: Phoenix

**Curt Palme** · Posted: Sat Mar 12, 2011 2:29 am Post subject:

I'll add yet another opinion... Barco 1209s had a lot of not all of their sets come with LUG tubes. I believe that they had a special part number designation for the P43 part that was something other than 'P43', but I can't remember.

I have never had any issue running Barco fast phosphor tubes, although I've had a couple of sets where P43 tubes in Marquees would turn the whites pink when you punched up the contrast. I'm not sure if this was specific to Marquee sets when using P43, but have never seen the same behavior in Barcos.

zGman · Joined: 22 May 2006 Posts: 599

There is no "flicker" at 60 Hz on my system - but the equipment is likely better than what existed in the 90's.

G

Tim in Phoenix · Joined: 21 Oct 2006 Posts: 4409 Location: Phoenix

Interesting what Curt saw; P43 seems to reduce output when driven to heat up, I have seen that many times.

.

zGman · Joined: 22 May 2006 Posts: 599

Scott would likely have the specs, but it seems that the discussion was had a long time ago on avs -
The decay time for normal green phosphor is considerably longer than the decay for red and blue,
hence the need for the different green phosphor for high refresh rate applications.

Willing to take another critical look, I just spent a relaxing hour reviewing HD material
on my system - things that I am familiar with and have seen on other rigs. And I just
don't see flicker - I see a well defined and clear image, lots of detail - no issues, no flicker.

G

CIR Engineering · Posted: Sat Mar 12, 2011 4:44 am Post subject:

zGman · Joined: 22 May 2006 Posts: 599

Craig - I have such good intentions to run the colorfacts/eye-one pro
on my P43....I will try to get to it next rainey day, and send the results.

However I think you are basically on track - a filtered P43 is likely off by about the
same (or less) xy as a unfiltered normal green - which is to say, not very much,
but noticeable on test patterns. Greens in video look pretty darn good to me.
Whites are blazing white, other colors look normal.... You of course may be much
more sensitive, with all your experience/training...

Light output is ok for me, but I am running a fairly small screen in a dark room.
and only run contrast on BG1209S at 55 to 58 (normal = 80) and only 60Hz.

What I like about it, and this is just my completely unscientific perception, is a lot of clarity
in very fast moving scenes - really good for my racing sim, and all the favorite action movies.....

I do have a used & unmounted P43 9" tube here, but it is not at all 'toasty'
enough for give away - works fine but some goofy light wear patterns.
Might have a spare grn c-element also, but won't be minty perfect.

Wish I was closer enough to get to the 3D meet - that should be great fun!

G

CIR Engineering · Posted: Sat Mar 12, 2011 3:56 pm Post subject:

dturco · Posted: Sat Mar 12, 2011 4:10 pm Post subject:

Well Craig if you need a Marquee green C-Element for the experiment I can loan you one if your interested.

CIR Engineering · Posted: Sat Mar 12, 2011 4:15 pm Post subject:

dturco · Posted: Sat Mar 12, 2011 8:55 pm Post subject:

CIR Engineering · Posted: Mon Mar 14, 2011 11:18 pm Post subject:

Well I ordered a brand spanking new Panasonic P43 today so I'll see. However it has to be shipped from Japan... it could be a while Neutral

They said they're in good shape, but it might be quite some time before shipments will begin again.

craigr

zGman · Joined: 22 May 2006 Posts: 599

PT22-30 tube - measurements with filtered c-element, ColorFacts & GetragMacBeth Eye-One Pro -
looking directly into lens in dark room.

G

CIR Engineering · Posted: Tue Mar 15, 2011 3:13 am Post subject:

Thanks Galen. If your eye1 is close this is very promising and MUCH better than I ever hoped. However, the color that the eye1 has the most trouble with is green so I will remain cautiously optimistic until I get a measurement with my PhotoReasearch.

This is exciting Thumbs Up

craigr