AVS Discussions

Projectors => CRT Projectors => Topic started by: Greg9518LC on October 26, 2016, 11:07:22 AM

Title: 9" Crt Talk
Post by: Greg9518LC on October 26, 2016, 11:07:22 AM
Would be nice if we could advance the discussions on CRT mods for the projectors as well as setup and calibration. 

Title: Re: 9" Crt Talk
Post by: AVSMike on October 26, 2016, 11:37:43 AM
Sure, there are still several people running CRT's. :)
Title: Re: 9" Crt Talk
Post by: stridsvognen on October 26, 2016, 12:05:44 PM
Count me in.. Just got back from my US 2016 CRT tour.. Its still kicking.. Try watch Harry Potter on a projector with a 2.600.000.000:1 on off contrast. 1080p 72hz.
Title: Re: 9" Crt Talk
Post by: AVSMike on October 26, 2016, 12:48:09 PM
Do want to point out, we do have a CRT section. :)
http://discuss.avscience.com/?board=41.0 (http://discuss.avscience.com/?board=41.0)
Title: Re: 9" Crt Talk
Post by: Greg9518LC on October 26, 2016, 02:13:57 PM
Do want to point out, we do have a CRT section. :)
http://discuss.avscience.com/?board=41.0 (http://discuss.avscience.com/?board=41.0)
Thanks Mike feel free to move this
Title: Re: 9" Crt Talk
Post by: Greg9518LC on November 26, 2016, 08:52:43 PM
I am going to move this thread forward and document my home theater room black out project. I already have an ideal room but there is room for improvement. Currently my room ceiling is painted in flat black. I want to eliminate ceiling reflections or at least reduce them. So I bought a can of Rosco #6003 saturated flat black that should arrive this week. From my research it should reduce reflections from 10% down to 2%. I am trying to avoid using triple black velvet since I have a drop ceiling and painting would be the easiest solution. So I will post my findings and see if this actually will meet my criteria. I am also researching black velvet theater seating to replace my brown sectional. I will post pictures of this project and post if this is a viable solution. If not I will continue with other blackout solutions to improve my theater
Title: Re: 9" Crt Talk
Post by: Greg9518LC on November 29, 2016, 10:24:24 PM
Rosco paint first coat on ceiling need to get the whole project done this week before I make a determination on it's effectiveness on rejecting light. It is actually a cool looking color but black it is not. It is less reflective then flat black.

(http://i.imgur.com/o0AL7yL.jpg)
Title: Re: 9" Crt Talk
Post by: Wolfman on November 30, 2016, 02:24:18 AM
Found my way here too. I layed out half my floor tiles yesterday and this morning, with no lamps on and shades closed I stepped on my dog! That's right, the little critter merged with the floor in an unexpected way. That tells me that the image, ones up and running again, really will make a litte difference as the black painted ceiling did. I need blacked out curtains too and know what to get and where.
Title: Re: 9" Crt Talk
Post by: stridsvognen on November 30, 2016, 02:50:35 AM
Looks a bit dark gray in comparison.. How is it looking with the light off.?
Title: Re: 9" Crt Talk
Post by: Greg9518LC on November 30, 2016, 06:18:06 AM
Looks a bit dark gray in comparison.. How is it looking with the light off.?
Wet this is the blackest paint I have every seen or worked with as  with the lights off:


Had a chance to sit down and watch some movies and on bright scenes I noticed an interesting observation. I know
that my setup is calibrated for 75 contrast and 52 brightness and I preferred 68 contrast with the flat black ceiling.
I now have more impact and seems to maintain the same brightness as before but at contrast 64 on bright scenes.
So the immersive effect I am looking for is there and I have a more dynamic image during bright scenes because it
is not washing out from the flat black ceiling.

I really like the look of the ceiling has now with the lights on. I am sure it will take me awhile to chase down all the spots I missed as it shows up instantly now as almost a white line or spot on the ceiling ;D while watching a movie.  Now that is flat black paint that I missed some spots so to me that is plain crazy and cool at the same time. 
Title: Re: 9" Crt Talk
Post by: Jbmeyer13 on November 30, 2016, 06:43:28 AM
Criag Rounds theater was painted flat black and I asked him if he were to do anything different he'd have covered the ceiling with black velvet.  It can be done but it would be a good bit of work and wouldn't be cheap.  For a 20x12 room the cost for Joann premiere velvet would be approximately $250 (and that's with a 40% off coupon) plus add in the cost of additional materials to construct the panels and it gets up there quick.  In your case it looks like you already have a suspended ceiling and those panels wrapped in velvet could work.  There's a stretch velvet which would likely work better since it will be easier to contour it around the edges.

Painting my ceiling black (vs white in the old theater) made a huge difference but there's another way to eliminate reflections- move your seat closer 8)
Title: Re: 9" Crt Talk
Post by: Greg9518LC on November 30, 2016, 07:10:36 AM
I sit 9ft from 110" screen so sitting closer is not an option for me. I looked into the black velvet options and sy fabrics
triple black is 7.00 yard and free shipping if I chose to go that way. I could also do the individual panels as that is an option
and I also thought of tearing out the drop ceiling. The question is how absorptive is strecthed black velvet all the samples I
seen had a sheen to them. Post a link that I could check out more information on.
Title: Re: 9" Crt Talk
Post by: Jbmeyer13 on November 30, 2016, 07:27:42 AM
I used Sy fabrics triple black on the screen wall in my last theater; good stuff and cheap to boot.  Suspended ceilings can have acoustical issues with rattling and I was considering that option but everyone urged me to go with drywall.  Your panels are contoured at the edges so I'm not sure how the velvet will take to that.  If you can post a close up shot of a panel.  When I used the Royal 3 on my AT panels I pulled it very tight but still had to staple it twice to get a tight fit.  If you have a high degree of humidity in your room that can also effect the material and it can become wavy.  I haven't used the stretch velvet but my guess is that it will be a little less prone to sagging over time.
Title: Re: 9" Crt Talk
Post by: Greg9518LC on November 30, 2016, 08:16:42 AM
If I go stretch velvet it is 5ft wide so I only need 10 yards to do the entire basement ceiling but need samples first.
And I would just go over the panels.
Title: Re: 9" Crt Talk
Post by: ellisr63 on November 30, 2016, 09:07:38 AM
When we built our room I went to Lowes, and asked them to make a flat black paint... When my friend was painting the room with a sprayer it was pretty hard due to lighting, but after it dried it was not as light absorbing as i wanted. My solution was to get the stickon velvet that comes in a roll, and is used in telescopes. I used this for the first couple of feet on the ceiling and it worked out great IMO. I used Jo Annes triple velvet for my soffits, and framing around the screen wall.
Title: Re: 9" Crt Talk
Post by: bmoney on November 30, 2016, 09:55:52 AM
When we built our room I went to Lowes, and asked them to make a flat black paint... When my friend was painting the room with a sprayer it was pretty hard due to lighting, but after it dried it was not as light absorbing as i wanted. My solution was to get the stickon velvet that comes in a roll, and is used in telescopes. I used this for the first couple of feet on the ceiling and it worked out great IMO. I used Jo Annes triple velvet for my soffits, and framing around the screen wall.

do you get any sag?
Title: Re: 9" Crt Talk
Post by: Greg9518LC on November 30, 2016, 10:01:01 AM
Found my way here too. I layed out half my floor tiles yesterday and this morning, with no lamps on and shades closed I stepped on my dog! That's right, the little critter merged with the floor in an unexpected way. That tells me that the image, ones up and running again, really will make a litte difference as the black painted ceiling did. I need blacked out curtains too and know what to get and where.
That sounds great that you found a solution and are moving forward. How about posting a pic of the progress?
Title: Re: 9" Crt Talk
Post by: Greg9518LC on November 30, 2016, 10:05:36 AM
When we built our room I went to Lowes, and asked them to make a flat black paint... When my friend was painting the room with a sprayer it was pretty hard due to lighting, but after it dried it was not as light absorbing as i wanted. My solution was to get the stickon velvet that comes in a roll, and is used in telescopes. I used this for the first couple of feet on the ceiling and it worked out great IMO. I used Jo Annes triple velvet for my soffits, and framing around the screen wall.
With the drop ceiling most likely not an option with stick on. I like the look of the ceiling painted so will give this a chance
to see how I progress making a determination after watching a bunch of movies.
Title: Re: 9" Crt Talk
Post by: ellisr63 on November 30, 2016, 10:16:22 AM
do you get any sag?
No...what I did was stick the velvet to pegboard (not what I would do again though as it is too slippery of a surface, and doesn't stick well), and wrapped the edges around the panels, and then use sheetrock screws to hold them up. If I was to do it again I would find a thin wood that was not slippery to use as a panel for attaching the stick-on velvet.
Title: Re: 9" Crt Talk
Post by: ellisr63 on November 30, 2016, 10:19:13 AM
That sounds great that you found a solution and are moving forward. How about posting a pic of the progress?
One thing I have found is that when you have a black hole it is hard to take pictures that really depict it unless you have some photography skillz. I lucked out and a friend was over one day and took some pics for me (he is a professional photographer).
Title: Re: 9" Crt Talk
Post by: Greg9518LC on November 30, 2016, 11:11:13 AM
One thing I have found is that when you have a black hole it is hard to take pictures that really depict it unless you have some photography skillz. I lucked out and a friend was over one day and took some pics for me (he is a professional photographer).
His room is not a black hole so it should be easy to take pics of the new floor he is installing.
Title: Re: 9" Crt Talk
Post by: Greg9518LC on December 01, 2016, 06:48:23 AM
6 hours down and 3 hours to go. The Rosco paint looks great on the walls and is less reflective than the dark purple fabric I had on the walls. Chased down more spots I missed on the ceiling and is starting to come together.  Looks like I will roll with this as my ceiling tiles  look like a million bucks cool effects and provides for a very immersive experience.  Looks like the money I save on velvet and making panels will go towards black furniture and some new seating. I revisited moving my seating closer and looks like 8ft viewing distance for the 110" screen will be the sweet spot.
There are minimal reflections and not worth it to reduce them anymore As I see it. A 2℅ reflective room overall down from 10℅ is a substantial improvement for 66.00 in paint and 10 hours in labor. Will continue to update as I progress thru the project. Paint still drying.

(http://i.imgur.com/t1WZopB.jpg)
Title: Re: 9" Crt Talk
Post by: stridsvognen on December 01, 2016, 07:04:41 AM
Seems you developed wide angle vision..  Soon your will leave nose marks on the screen.. 8)
Title: Re: 9" Crt Talk
Post by: Greg9518LC on December 01, 2016, 07:11:26 AM
Seems you developed wide angle vision..  Soon your will leave nose marks on the screen.. 8)
The image is so clean that lacks noise and pixels that the room sucks me further and further into the screen.
Title: Re: 9" Crt Talk
Post by: stridsvognen on December 01, 2016, 07:21:24 AM
The image is so clean that lacks noise and pixels that the room sucks me further and further into the screen.

Just be carefull you dont get lost in there..  I would like to have someone to drink beer with next time i get over there..
Title: Re: 9" Crt Talk
Post by: Greg9518LC on December 02, 2016, 01:15:51 PM
Room all done and the final conclusion is there will be no velvet
in my future. Turned out great and it gives me the look and immersion
I was looking for. It gives me the affect of a larger room and the reflection
is so minimal that any improvement would be a waste of time and money.
Title: Re: 9" Crt Talk
Post by: stridsvognen on December 04, 2016, 12:57:17 PM
Pictures are worth more than a 1000 words.. ;)
Title: Re: 9" Crt Talk
Post by: Greg9518LC on December 07, 2016, 06:09:25 AM
Pictures are worth more than a 1000 words.. ;)
Yes they are now I have Martin Logans Ascents flanking each side of the screen :)
Title: Re: 9" Crt Talk
Post by: Greg9518LC on December 09, 2016, 07:58:16 AM
(http://i.imgur.com/ACs3Wa7.jpg)
(http://i.imgur.com/t1WZopB.jpg)




New look vs old look. Sure am enjoying my Martin
Logan Ascents.
Title: Re: 9" Crt Talk
Post by: stridsvognen on December 09, 2016, 08:39:41 AM
Looking good.. And judging from your lack of interest in movies for the last few days ill guess you re discovered another hobby.
Title: Re: 9" Crt Talk
Post by: Jbmeyer13 on December 09, 2016, 09:06:10 AM
I'd like to tell you that it looks good but I can't say that.  That's because it's so dark in there you can't see anything other than those behemoth ML's!  What are you running for the center channel?  Or are you a two channel guy like Kurt 8)

Title: Re: 9" Crt Talk
Post by: Greg9518LC on December 09, 2016, 09:12:52 AM
Strictly a 2 channel guy. The soundstage is so massive there is no need
for more speakers. There is no center channel that will keep up with these
and the resolving ability on movies is amazing. Kurt is right about a new hobby
and it is called enjoying my home theater 8)
Title: Re: 9" Crt Talk
Post by: stridsvognen on December 10, 2016, 04:42:59 AM
There is a lot of talk about 4K on CRT on, but i dont see anybody role out a plan showing how they intend to make that work..
Some want a HDMI 2.0 moome card, and Lumagen to output UHD interlaced at 48hz.  So if someone have the math figured out on all this it would be interesting to hear about it.
Title: Re: 9" Crt Talk
Post by: Greg9518LC on January 08, 2017, 09:26:10 AM
What lenses have a longer throw? Might want to move my floating screen back against the wall to open up my soundstage more so would need a lens to shoot a 156" throw onto a 110" screen.
Title: Re: 9" Crt Talk
Post by: stridsvognen on January 08, 2017, 11:52:09 AM
There is no lenses for that, only option is to adjust your raster so it gets smaler, compressing resolution and lower light output. Thats why many CRT projectors have funky small raster burnin on the tubes. Another option is to use a bigger screen and kep resolution but reduce light output.
Title: Re: 9" Crt Talk
Post by: stridsvognen on June 23, 2017, 10:26:16 AM
Bought a new blue P19LCP tube, wich is on its way from Germany..  Now i just need to find a few green tubes.
Title: Re: 9" Crt Talk
Post by: stridsvognen on June 27, 2017, 09:30:46 AM
The blue tube arived today, perfect new tube,  awsome packing.. Its already up running in my test projector.