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DIY Screen - Paint Advice - Epson 5020 - LED Backlight - MDF / PVC Foam

post #1 of 6
Thread Starter 
Hi there all,
After 1.5 years lurking and browsing this forum for advice it is time for me to finally(!) begin with my home theater room. Within a month I will get the keys of my new home, and want to convert my living room to a man-cave. I live in the Netherlands, just across the ocean. So don't mind my possible language mistakes.

First of all things of which I think they suite me well when reading this forum:

My Floorplan of my home:


- Projector: Epson 5020. (2400 lumen I just need for ambient light). It will be ceiling mounted; At position A.
- A 16:9 DIY Screen. I was convinced to use MDF, but I saw a thread here where Forex PVC Foam (5 mm) was used. This suits me better, so I think I need this one.
- I want to make a custom RGB LED Ambilight behind the screen. As shown here: http://www.youtube.com/watch?v=lrWvQlIEMc8.
- I want to make sure that it is watchable with `some` ambient light. As you can see on my floorplan I have a 2 big windows next to my room. But with curtains I tend to make room as dark as possible.

I came across this thread from MM:

This is the kind of screen I like. Maybe with a thin black border for contrast enchangements.

My room measurements. From A to B: 4.44 meters (Damn metric system heheh). This converts to 14.5669 feet.
As shown in the Projector Cental Calculator (http://www.projectorcentral.com/Epson-PowerLite_Home_Cinema_5020UB-projection-calculator-pro.htm) I lose my mind which paint (SF / MM) is the best for me. So my questions for now:

- Which paint is advicable for my demands?
- Which gain do I need?
- Which screen size I can get maximal / minimal from this conditions?
- I read very much about the importance about of the space around the projector screen (such as the ceiling). I really want to paint anything black, but keep in mind; it is a living room, so I want to avoid this. Which other measurements I can take to improve my contrast. I think I need a nice balance between good blacks, and good viewing in ambient lights.
Which brings me to my bonus question; I think I can solve a lot of problems to create a custom lightning plan. On my floorplan, where my couch is, if i create some (recessed) lightning sources with the lights facing towards the audience? (Sorry for the crappy explaination). In short; What can I do with lights to make my projectorscreen area as dark as possible, and my couching area lighter without suffering from contrast loss. To sum up;
- Which tricks can I pull to improve the contrast in ambient light with non-reflective paints and such? Some tips are very welcome!

I think I said all the thing you guys need to know. I hope someone can give me some advice what to do! I am looking forward to this moment for 2 years now, and can't wait to start painting. (Yes, I have a spraygun etc).
Thanks in advance for your time, and if you have any questions, feel free to ask!
post #2 of 6
Hello Sativa ! eek.gif

Joined AVS 12-11. Just posting now.

Talk about Space-Time distortion. tongue.gif

So OK. Netherlands, eh? Amsterdam perhaps? Last time I was there, (3 yrs ago) I had no issue sourcing the needed paints.

Et Tu Abraxas?

It's great that you have decided to get started. The photo of the LCD/SF Screen you re-posted was also being hit with a 5020.
The multichannel - dimmable LED Light Strips are Da Bomb, far more sensible than fixed lumen fixed color LED / Incandescent Rope lighting.

There is much we can advise you on. Lighting, Room Colors (...Black is not required...) Screen size......pretty much everything.

To start, in your space, and with effective ambient light viewing considered essential, your screen should be 110" diagonal

Next, Projector position requires at least 6" minimum distance from the wall. Add to that the depth of the PJ from the rear to the front face of the Lens (15.6") and the forward most part of the PJ's lens will be at 27" off the rear wall. That leaves a Throw of 11'-11"

For your situation, that is about absolutely perfect. With a High Contrast Silver/Gray surface of just 1.0 gain you'll be getting at minimum 27 foot lambert of reflective brightness off-screen. And we can do you better than that, giving you 1.2 gain and a medium gray/silver screen that will deliver 32 foot lambert.

So let's get things rollin'

(...did I just say that?)
post #3 of 6
Thread Starter 
Wow. A reply from the master himself. Thanks!
Quote:
Originally Posted by MississippiMan View Post

Hello Sativa ! eek.gif

So OK. Netherlands, eh? Amsterdam perhaps? Last time I was there, (3 yrs ago) I had no issue sourcing the needed paints.
Good to hear! I live in the south of the Netherlands. But you suddenly answers a new question of me; The availability of the paint in the Netherlands. Which will be good I presume!
Quote:
To start, in your space, and with effective ambient light viewing considered essential, your screen should be 110" diagonal
Good to hear. I have a viewing in my new home Thursday so I can finally visualize this size. What if I am pigheaded, and want a bigger size (120" / 130" ?) Possible? Or will that be a no-go?
I just did a mock-up online;
Exactly what I want. Everywhere you can look filled with screen! So I presume this fits my needs very well!
Quote:
Next, Projector position requires at least 6" minimum distance from the wall. Add to that the depth of the PJ from the rear to the front face of the Lens (15.6") and the forward most part of the PJ's lens will be at 27" off the rear wall. That leaves a Throw of 11'-11" (3.6322 meters)
For your situation, that is about absolutely perfect.
Wow. Didn't expect that my situation was perfect. Good to hear!
Quote:
With a High Contrast Silver/Gray surface of just 1.0 gain you'll be getting at minimum 27 foot lambert of reflective brightness off-screen. And we can do you better than that, giving you 1.2 gain and a medium gray/silver screen that will deliver 32 foot lambert.
So. Let's get rolling (haha)

About my material. I came across your tip about Forex PVC foam (5 mm). I want to use this for my screen. Do you think the density is good if you know I will but a RGB LED strip behind it? No light leakage from behind?
I think I will go with a 1.2 gain paint. Which paint do you advice? Which type of SF/MM ?

I just can't wait to finally begin with painting! (I hired a professional. I am only technical behind A PC, not with my hands haha.)

Maybe anyone has tips to prevent light leakage to the ceiling and back?
Thanks all!
Edited by SativaNL - 4/23/13 at 5:45am
post #4 of 6
Quote:
Originally Posted by SativaNL View Post

Wow. A reply from the master himself. Thanks!
Good to hear! I live in the south of the Netherlands. But you suddenly answers a new question of me; The availability of the paint in the Netherlands. Which will be good I presume!
Good to hear. I have a viewing in my new home Thursday so I can finally visualize this size. What if I am pigheaded, and want a bigger size (120" / 130" ?) Possible? Or will that be a no-go?

The larger you go, the less resistance to ambient light you'll have because size will scrub off lumen-produced Foot Lambert levels. 110" seems perfectly suited to your needs and room size.
Quote:
I just did a mock-up online;
Exactly what I want. Everywhere you can look filled with screen! So I presume this fits my needs very well!
Wow. Didn't expect that my situation was perfect. Good to hear!
So. Let's get rolling (haha)

Perfect or no, every design comes with it's limitations. You can stretch things somewhat, but everything above / below ideal always affects performance.
Quote:
About my material. I came across your tip about Forex PVC foam (5 mm). I want to use this for my screen. Do you think the density is good if you know I will but a RGB LED strip behind it? No light leakage from behind?

All you need to do is to place a bright light behind the sheet in a darkened room to see how much if any light is absorbed and transmitted through. It has been my personal experience that the type of White Expanded Foam Sign Board we suggest is more than opaque enough to prevent such light leakage. Another choice is to get the material in "Black" and prime the surface with White paint first. (...I just did one of those in New Orleans recently...and Black cost less than White! )

For the LED lights, building a "Edge Frame" that creates a right angled edge around the Screen will block excessive "sideway-directed" LED illumination, and focus such light against the back wall.
Quote:
I think I will go with a 1.2 gain paint. Which paint do you advice? Which type of SF/MM ?

Silver Fire v2.5 2.0
Quote:
I just can't wait to finally begin with painting! (I hired a professional. I am only technical behind A PC, not with my hands haha.)

It's hard to find good help these days, but if there is anywhere on Earth you can find a Painter with "Artistic tendencies", the Netherlands is the place.
But be advised whoever does the spraying, that HVLP application is mandatory....and some practice before spraying onto your chosen material is ALWAYS advisable.
Quote:
Maybe anyone has tips to prevent light leakage to the ceiling and back?
Thanks all!

You know we do!

But are you referring to the projected light rebounding back to wash out the screen, or the LED light? Seems like. Placing the Screen itself as low as possible will mitigate Ceiling reflections (...you might have more to worry about with the right side / corner actually...) and painting the ceiling a medium shade of Gray can effectively reduce reflection even more...it need not be "Black". In fact it can even be just a darker, Flat shade of the existing Color.

So....let's get this project "fired up". tongue.gif
post #5 of 6
Thread Starter 
Thanks again man!!
Quote:
Originally Posted by MississippiMan View Post

All you need to do is to place a bright light behind the sheet in a darkened room to see how much if any light is absorbed and transmitted through. It has been my personal experience that the type of White Expanded Foam Sign Board we suggest is more than opaque enough to prevent such light leakage. Another choice is to get the material in "Black" and prime the surface with White paint first. (...I just did one of those in New Orleans recently...and Black cost less than White! )
I was looking for a black panel, but they don't sell it here in the dimensions I need. Maybe I can use 10 mm in stead of 5 mm!
Quote:
It's hard to find good help these days, but if there is anywhere on Earth you can find a Painter with "Artistic tendencies", the Netherlands is the place.
But be advised whoever does the spraying, that HVLP application is mandatory....and some practice before spraying onto your chosen material is ALWAYS advisable.
Thanks for the advice!

Quote:
But are you referring to the projected light rebounding back to wash out the screen, or the LED light? Seems like. Placing the Screen itself as low as possible will mitigate Ceiling reflections (...you might have more to worry about with the right side / corner actually...) and painting the ceiling a medium shade of Gray can effectively reduce reflection even more...it need not be "Black". In fact it can even be just a darker, Flat shade of the existing Color.
I was talking about the light leakage because my walls are plain white. Thanks for the tip! I will use a gray paint. But I have to admit; This also looks really cool!

Can't make up my mind yet! But the screen comes first now!
Quote:
So....let's get this project "fired up". tongue.gif
Thanks! Can't wait either!!
post #6 of 6
It's always cool to see any screen doing something unexpectedly special. And Ambient Light Screens are starting to hold a special place in the hearts of more and more budding FP enthusiasts who simply cannot have totally dedicated home theaters.

But of course I've known that for about 8 years on now. tongue.gif

I've seen that SI-BD Screen shot bandied about for a couple years now. It does show just what some effective masking of reflective room surfaces can do to assist even a Ambient Light screen to do it's best.

But Brother, I'm a'tellin' ya that a well done 110" Diagonal SF v2.5 4.0 Screen will be all that...and more, especially since it will cost about $3000.00 less. (2700+ Euros) rolleyes.gif



Ok....let the haters start a'hatin' ! biggrin.gif
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