Black Widow or Black Widow Ultra and what is the best for me and a PT-AE8000 - Page 2 - Home Theater Forum and Systems - HomeTheaterShack.com

Reply
 
Thread Tools
post #11 of 14 Old 01-28-14, 02:39 AM
HTS Moderator
 
Join Date: Sep 2012
Location: Greece
Posts: 519
Re: Black Widow or Black Widow Ultra and what is the best for me and a PT-AE8000

Quote:
Pyrometman wrote: View Post
Yes, that is also true...and some projectors are designed better than others to keep dust out of the light path...but it's always a good idea to keep it clean.
Yiannis1970 is offline  
Sponsored Links
Advertisement
 
post #12 of 14 Old 01-28-14, 09:17 AM
Shackster
 
Pyrometman's Avatar
Jason
 
Join Date: Apr 2012
Location: Riverside, CA
Posts: 68
Re: Black Widow or Black Widow Ultra and what is the best for me and a PT-AE8000

Quote:
darbid wrote: View Post
Thank you Pyrometman for your formula that sounds good. There is one variable that I don't see in your calculation and that is the distance to the screen? Am I missing something here?

Also I have a burning question or decision to make and that is what paint to use or would be suitable and I am hoping to get opinions. As I wrote above it appears I have access to both old and new AAA-F and I have already bought two different base paints so what in you opinion is the best course of action?
darbid,

The throw distance isn't necessary for calculation of the Footlamberts. It is only needed to calculate how wide your image will be, based on the throw ratio range of your projector.

However, it is in your interest to have as long a throw as possible. Based on what you have stated for your room/ambient lighting conditions, you may want to choose a light gray screen, maybe N9 that has some specular reflectivity as well to bring the gain back to around 1.0. The long throw distance helps because the use of screens that have some specular reflectivity will not direct light back to you if the throw distance is very short. The reason for that is because the angles become greater, particularly to the bottom corners (ceiling mounted setup). The light in the corners is not reflected back to you as much as in the center and you start to see less brightness uniformity across the screen. You may want to research the Cream&Sugar DIY solution found here in this forum. You should also get input from others as well as someone may have a better solution. More input is always helpful to weigh the positives and negatives.
Pyrometman is offline  
post #13 of 14 Old 01-28-14, 10:17 AM Thread Starter
Shackster
David
 
Join Date: Jan 2014
Location: Munich
Posts: 17
Re: Black Widow or Black Widow Ultra and what is the best for me and a PT-AE8000

Ok thank you. This is all new to me.

So I have bought already (about N7.9) (RAL7038) - I was thinking I would need something darker. I also have the old Black Widow base paint. I can add AAA-F to both to increase the reflectivity that you talk about. So is the Original Black Widow base paint going to be more than N7.9?

PS. Actually I am surprised that you are suggesting something so light. On my reading N7.9 is around the Veil grey which is what is suggested in most cases.
darbid is offline  
 
post #14 of 14 Old 01-28-14, 02:52 PM
Shackster
 
Pyrometman's Avatar
Jason
 
Join Date: Apr 2012
Location: Riverside, CA
Posts: 68
Re: Black Widow or Black Widow Ultra and what is the best for me and a PT-AE8000

Quote:
darbid wrote: View Post
Ok thank you. This is all new to me.

So I have bought already (about N7.9) (RAL7038) - I was thinking I would need something darker. I also have the old Black Widow base paint. I can add AAA-F to both to increase the reflectivity that you talk about. So is the Original Black Widow base paint going to be more than N7.9?

PS. Actually I am surprised that you are suggesting something so light. On my reading N7.9 is around the Veil grey which is what is suggested in most cases.
I think the original Black Widow was around N7.5 but with a gain of 0.88. It might be a bit dim for the screen size you wanted to achieve...assuming you set your projector on one of the lower lumen settings to get a better image and longer lamp life. If you choose to use a different setting (higher output), then perhaps you can recalculate your expected Footlamberts and use a darker gray paint. I think most people like to achieve 15 or greater Footlamberts.
Pyrometman is offline  
Reply

Bookmarks

Tags
black , ptae8000 , ultra , widow

Quick Reply
Message:
Options

Register Now




PLEASE COMPLETE ALL REQUIRED FIELDS BELOW... THANKS!

REQUIRED FIELDS ON THIS PAGE
YOU MUST COMPLETE ALL OF THESE

Username
Password
Confirm Password
Email Address
Confirm Email Address
Random Question
Random Question #2




User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
PLEASE READ BELOW PRIOR TO ENTERING AN EMAIL ADDRESS!

ATTENTION!

YOU MUST ACTIVATE YOUR ACCOUNT!

Activation requires you reply to an email we will send you after you register... if you do not reply to this email, you will not be able to view certain areas of the forum or certain images... nor will you be able download software.

AN INVALID EMAIL ADDRESS WILL CAUSE YOUR ACCOUNT TO BE DELETED!

See our banned email list here: Banned Email List

We DO NOT respond to spamcop, boxtrapper and spamblocker emails... please add @hometheatershack DOT com to your whitelist prior to registering or you will get nowhere on your registration.


Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML is not allowed!
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

 


For the best viewing experience please update your browser to Google Chrome