CurtPalme.com Home Theater Forum

[mp20748]

I forgot to mention. I have another improvement upgrade that makes a serious difference when implemented. I can't talk about it, because its a really simple upgrade, but can say it will be implemented on every board from now on, and have been done to any that have yet to be received. This is not for stock boards, so leave me alone..

And for anyone with previous version mods (a year or two going back), I will provide a link for you to DIY. But this will happen next month.

[stridsvognen]

Just messed around with calibration, and got a quite nice gamma run with the MP 03VIM

This grayscale is with 14fl on a 100" gain 1.0 screen

It will max out at 16 fl

This is a native CRT calibration.. No funny buisness.. 1080P 72 hz Need to play with focus on red and green to put them a bit closer at the low level.

[mp20748]

Got in some mini RCA's

Trying it on the Commscope cable:

[stridsvognen]

Look like a nice fit for the cable..

[fragzero]

A small thing i have been wondering about.

Wouldn't it be beneficial to upgrade your projector to Lug's with HFQ900 lenses? If not, why are these considerably sharper on a stock projector?

[stridsvognen]

[mp20748]

[fragzero]

I didn't know HD10E's where HFQ900's in disguise.

Mike, swapping lug's in your machine would it be benifical? (not considering costs etc) or will there be very little difference?

(also, LUG's have a lower lightoutput if i'm correct?)

[mp20748]

[stridsvognen]

Let me burn those new LUG tubes.. How nice of you.. At least they were cheep..

[fragzero]

Thanks for the explanation!

[jbmeyer13]

I can tell you this, that mini board makes the image look so much sharper you'd think you were looking at a digital. Not sure if I'd want to lower the light output by using LUGS but I'm sure Kurt will let us know

[stridsvognen]

[mp20748]

I can finally say - I'm done wrapping up the final stuff for the boards..

I'll get back later on this, or you'll hear from someone that will be distributing them for me...





shots taking a few minutes ago with some light in the room. projector not calibrated still.

1920X1080P /60hz - Modified 02 VIM

[mp20748]

The lights are out now.

[stridsvognen]

I removed my moddet neckboards yesterday, and put in some standard neckboards, going with my MP 03VIM.

Now it can be dificoult to see improvements when slowly geting them, but this step back just display what i got used to.

Its nothing like playing with the VIM.. there you see the bandwidth role off making the lines much darker, compared to the perfect 03VIM.

Here they are still bright, but they do change colors.

2nd i noticed that the ability to hold focus went down the drain..

And the ansi contrast.. damit.. this looks compleetly washed out.. I guess its noise in the image, and i did calibrate it to the same spec as the moddet neckboards.

Im loosing lots and lots of details.. colors are muted flat, no dynamic range left.

I am running 188Mhz, so im sure ill be able to get some of the lost stuff back lowerint hte framerate from 72 to 60.

So i think i can say its quite meaningless to test the MP VIM without the MP neckboards,

Not that the vim alone dont change anything, it will show very clear on a test pattern, but still be far from complete.

With the mods instaled, there is something we need to adapt to, and thats the changed response to Contrast and brightness.

I did measure 16fl on a 100" no gain screen with full contrast. And not much blooming. MP 03 VIM and neckboards.

I normaly run a contrast around 80-82, that gives me 10fl.

Putting back the standard neckboards puts contrast down to 60 to get 10 fl.

But already at 12fl you get heavy blooming.

I dident measure full contrast with standard neckboards, but it is my impression that they will measure almost the same max output,just with heavy blooming and that the light output roles off when the blooming sets in.

So my conclution is that the moddet boards holds a much more linear output from 0-100, but we just have to adapt to the higher contrast nr on the screen screaming danger danger when we are used to standard boards.

[jbmeyer13]

Before I visited Mike's he asked me to talk with Curt about his experience (since Curt had just been there) and Curt told me that 100 contrast on Mike's boards is like 70 on stock. This goes back to what I said in one of my original posts; you likely need the whole package to really see the difference. Mike has altered the video chain (offset) quite drastically and while you can mix and match, to really get the full benefit takes the full set and the mini board. Just wait until you see what it looks like with the mini board

The sharpness is unlike anything I have seen on a CRT set up. Have to wonder what that would look like mated with LUGS...

[stridsvognen]

[mp20748]

Attached is my commercial version of my 02 VIM mod. It has two (2) mini boards, the red one is a power supply for the +/- 14 volt rail into the sample and Hold circuits (both int/ext). It corrects on that VERY noisy 14 supply rail, and provides a VERY clean +/- 12 volt supply for those circuits. This commercial version makes for an almost noiseless VIM. And that lends to a super black level performing VIM.

[redfox001]