CurtPalme.com Home Theater Forum

[stridsvognen]

Have you compared the image with measured gamme at 2.35 on a 8500AC vs a 9500LC.?

[Nashou66]

[stridsvognen]

[Nashou66]

What Marquee Owners Drive !





nashou

[Nashou66]

Well after a long day Its almost set up. Ran out of time especially when not hitting save after an hour of converging. Doh!!!

I'll have to finish up the convergence on the right PJ today some time. But Justing did most of the geometry work I did the harder stuff Lifting those damn PJ'S!!!!!!!

Well off to the Odyssey to make sure it didn't burn down!

Nashou

[Nashou66]

Ok A did some more work after JB left.



here a little bit of top and bottom are cut off. This is normal behavior from the TV ones I think. I
will try to figure it out. I can shift the pixels on top and bottom down or up to see the border but it shifts the whole image. I think I might be able to use the Lumagen's to fix this. I remember doing this for my TV Sat box input IIRC.

Aslo the top pic was two 1.33 aspects blended. I forgot to use the zoom while converging and when I did they didn't line up!!! I had to do some adjustment in size and Phase while using the blend patter in the second image instead.




Thanks Justin for kicking my in the Ass to get this going and almost done!!!!

Nashou

[Nashou66]

Taking Break on my one of my SVS PB100 subs after I just got done adding the red and blue lenses and doing the convergence .




Thirteen feet !!!!!! DAMNNNNNNN!!!!!!!!!




Nashou

[overclkr]

[mx83toy]

dewd your a freak!!! i cant get 1 es machine that well aligned let alone 2 with blend zones hanging off the roof!!!! hey so now seeing these 9" LC tubes in action do you think you'll ever be going back to an AC 8" you know what coming next right

[jbmeyer13]

For those on the fence with regards to blending, you are insane if you undertake this process. Aside from the enormous cost the harsh reality is that to get truly exceptional results the job requires two people. This assumes that one person thoroughly understands the intricicies of the blend hardware and how it interacts with everything else. It's blatantly clear why CIR told me he would never want a blended set up nor is all that much interested in setting them up for customers. It's far from a "set and forget" project and that characteristic doesn't lend itself well to the pro-calibration world. If you are still inclined to venture into this arena here are some things to be aware of:

Requires Two People

You don't necessarily need 2 individuals that are knowledgable about CRT; the second person is really necessary to help with things like measuring and verifying grid squares, aligning laser levels, verifying accuracy of such when the other person is unable to. For example, when trying to measure the top quadrant grid on a 13' wide screen the person holding the yard stick can't even read it. These types of issues may seem inconsequential on a normal set up but for a blend they carry more importance; especially in the blend zone. What Tom and I accomplished in an 8-hour time span would take a single person 3 times that assuming they want a perfect set up. Mind you we haven't even touched any color calibration.

Geometry and Banding

The reason it takes so long to set up the geometry properly is to avoid the banding that plagues the Marquee chassis. We really can't use the PJ's internal 100IRE green field because the raster wraps around the tube face. This means we have to be constantly switching back and forth between the Oppo and Lumagen test patterns and it becomes a tiresome process. Eliminating or minimizing the banding (a major irritation point for me) occupied the majority of the time.

Projector Differences

Both of Tom's PJ's are late model VDC's with new tubes and the best lens (HFQ900). Even after letting the PJ's warm up for an hour prior to adjusting we noticed that his left projector was not as stable as the right. We noticed some drift (in a skewed fashion) which was surprising to say the least. We aligned everything on the left and then several hours later we noticed that the vertical lines were not as precisely level as they had previously been. The right projector however was rock solid. If you are going to blend you better mod the projectors to the n'th degree in an effort to achieve maximum stability. I believe there were some differences between the power supplies and the CLM from the left and right PJ's which may have contributed to this.

Blend hardware

I'll let Tom describe the challenges here in more detail but suffice it to say that properly zooming the image and acieveing 1:1 pixel mapping is not a straight forward process. He totally freaked out after I left and then suddenly remembered the trick.

Overall, it's been a very rewarding process thus far. It felt great to help a friend who has provided invaluable help to myself and so many others in this community. IMO (and I'm sure many will agree) Nash is the face of this hobby; the poster child for CRT addiction!

[Nashou66]

Pete, Justin did most of the hard stuff geometry wise. I did the muscle work before he came.
It was his eminent visit that made me get my ass in gear and finally swap the tubes and
move the PJ's back for the 13 foot screen. If wasn't for that it take another 6 months I bet .

Just is the freak!! His adamant insistence on NO banding was what too so long. But watching
him introduce the banding and me asking questions about it we sorta figured out how its introduced.
It needs a little bit of size, convergence and top and bottom key and pin manipulation. Putting up a
full white screen and adjusting those parameters in the area of the problem will show you which one
causes it or fixes it. So if an area has banding but the to remove it you need to drop convergence a
few click you can adjust say top pin to bring the grid back down then go to the top and use
convergence to stretch it back. It is all about the scan lines getting bunched up and causing a
brighter area in a certain zone. Just has gotten very good at removing it but it takes him about
3 times longer to do a convergence of Green that it does me I just am not bothered by slight
banding as he is.

The one PJ that drifted a little bit in both the horizontal scan lines and vertical ( skewed a bit off plumb)
does not have the Black Gate LVPS. But the one I did the BG cap replacement to was steady before
the upgrade so not sure if that is it.

When we were setting up the two PJ separately using the 1.3 patterns I forgot it works for the first
PJ but then you have to use the Zoom function and basically have it in "blend mode" when setting
up the second PJ. So when I turned on the zoom function nothing matched up in the center in
each axis!!! I was freaking out!!! I had to re size , re phase and a little re convergence to get it to
the pics above. Not long once I calmed down and allowed myself to think it out. i sat there in the
second row just staring and thinking for about 15 minutes. Then said Ahha!!! And slammed it
out in a jiffy.


Nashou

[Nashou66]

Well Like an Idiot and in my haste to get the right PJ up after I swapped the tubes and the G2 wires
I never tested the PJ. Well the G2 swap did not go successful . However I do think I know what it is.
Whilst removing the pins from the harness you have to depress them to unclip. Well I never
de compressed them up enough to allow the HVPS blade connector traces to make contact again.
IDIOT!!!!! Doh!!! FACE PALM etc, etc, etc.......

So Now trying to figure out how to freakin do this with out removing the PJ and having to
re mount it again!!!!! Argggg!!!!!

I was thinking of building up some solder on the traces of the red and blue G2's in the HVPS so that
the raised solder would be the new contact area. Good or bad Idea if I can not lift the spring clips up
enough to make the contact?

I thought of adding a piece of plastic zip tie I have to lift the connect up a bit to make contact but
that might just cause the blade over time to push the wire out of the connector since the zip tie
might lift the connectors locking tab up enough to allow it to move out of the connector.

Damn It!!!!

EDIT: Issue resolved I just decided t try to bend the pins up a bit and I did add
some bits of plastic under the pins so it would help with some upward pressure . All is fine. the G2
on these tubes need much adjusting compared to the other PJ. red had to be raised a lot for me to
see it and blue had to be lowered. The First PJ looked good from the get go, weird.


nashou

[CIR Engineering]

[mx83toy]

[the big E]

[Nashou66]

[overclkr]

Damn, look at that geometry kicking ass and taking names. Beyond impressive. Dude you so rock. YOU SUCK.

Get that center focus cleaner!

YOU SUCK!!!!!!! So Awesome.

[jbmeyer13]

[Nashou66]

[Tim in Phoenix]