189 replies to this topic

[Highjinx]

Hey Guys......do you run the projectors inverted? Try running the unit table/shelf mounted temporarily and see if the situ improves?

[richardc]

Highjinx
I have got the X3 shelf mounted center screen to minimize keystone correction for better video processing.
Thanks for your advice
Richard

Edited by richardc, 12 April 2012 - 07:47 AM.

[Owen]

The JVC has lens shift so it can be mounted above screen center without any need for keystone correction as the projector remains perfectly horizontal, works great and can actually improve ANSI contrast.


I have never experienced a "lock up" in 550 hour, probably because my X3 is directly connected to a PC, no receiver in line.

[richardc]

Hi Owen
Thanks for this information, I was under the impression lens shift, shifted the image down but distorted it (so to speak) and the keystone adjustment would correct this via video processing.
So what would the keystone adjument be used for, I can understand if the projector was mounted on an angle you would need keystone but why would anyone mount it on an angle and not horizontal to the screen.
Are you saying the ANSI contrast suffers because of the reflection straight back into the lens if mounted at center screen.
I am still learning even after many years with CRT projectors.
I value your input.
Regrds
Richard

[Owen]

Lens shift is purely optical its simple moves the picture left, right, up or down without distortion (unless you use a lot). I have my X3 mounted just below the top of the screen yet the sides of the image are straight and parallel with no visible distortion.
Keystone correction is only useful in extreme circumstances where the projector is way off center of not square and parallel.

ANSI contrast is compromised by reflections in the optical path of the projector, using lens shift can redirect some of these reflections to an area outside the projected image thereby improving ANSI.
I cant say I can see any difference with or without lens shift in my setup and image sharpness is unaffected as well.

Edited by Owen, 13 April 2012 - 11:44 AM.

[richardc]

Thanks Owen

[richardc]

Well my saga continues.
Got my X3 back just the other day, put it on a coffee table fired it up got excited to see picture once again.
No vertical shift!
Unit now back in for repair again.
Bought this unit in December 11
Only watched 2 movies.
Have been told optical block seems to be defective.
Would have thought this unit should be replaced months ago.
Think I might contact consumer people tomorrow.
Great Projector.
Service ????????????
Richard

[Quark]

You've been more than patient - time to chase a prompt replacement or money back - that's just appalling.

[Owen]

It is appalling, you have been far too patient mate. It seems your service agent is less than professional and the distributor has not been on the case either, so its time you make something happen. Either your projector is repaired promptly (7 days), is replaced, or you get your money back.

[richardc]

Hi Guys
Found out yesterday that the optical block has a crack in the dicast next to where the vertiacal shift
machanism is, how the hell that cracked beats me.
Anyway the good news is Kenwood is replacing the X3 with an X30.
Could not be better news as this has gone on for 5 months.
And this was not the original problem.
So guys, ceiling mounted, 92" X 52" screen about 14ft back from screen, what would you recommend center of lens to top of screen should be.
The screen is 19" from ceiling.
8ft ceiling.
Thanks
Richard

Edited by richardc, 18 May 2012 - 07:16 PM.

[Quark]

richardc, on 18 May 2012 - 07:16 PM, said:

Hi Guys
Found out yesterday that the optical block has a crack in the dicast next to where the vertiacal shift
machanism is, how the hell that cracked beats me.
Anyway the good news is Kenwood is replacing the X3 with an X30.
Could not be better news as this has gone on for 5 months.
And this was not the original problem.
So guys, ceiling mounted, 92" X 52" screen about 14ft back from screen, what would you recommend center of lens to top of screen should be.
The screen is 19" from ceiling.
8ft ceiling.
Thanks
Richard

A good outcome, shame it took far too long to get sorted.

[cinema mad]

richardc, on 18 May 2012 - 07:16 PM, said:

Hi Guys
Found out yesterday that the optical block has a crack in the dicast next to where the vertiacal shift
machanism is, how the hell that cracked beats me.
Anyway the good news is Kenwood is replacing the X3 with an X30.
Could not be better news as this has gone on for 5 months.
And this was not the original problem.
So guys, ceiling mounted, 92" X 52" screen about 14ft back from screen, what would you recommend center of lens to top of screen should be.
The screen is 19" from ceiling.
8ft ceiling.
Thanks
Richard

  Hope All Goes well with the new upgraded projector Richard!!!
I suppose its logical The Crack most likely happened during Transit but then again I wouldn't put it past the Repair Agents careless handling,
seeing first hand some of the desgustingly poor workmen ship Ive seen in my time..

[Chopsus]

Gotta wonder if it's a refurb and he idiot who installed the  OB over torqued its mounting screws.

[cinema mad]

Not Sure If  this JVC Projector Calculator helps Richard

http://www.jvc.eu/lens_calculator/

[richardc]

Hi Guys
Installed it tonight on a coffee table.
So far so good, will watch a Blu Ray movie tonight.
Cheers
Richard

PS Thanks Jason