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Author Topic: No Sony CRT-based TV sets anymore (RIP Trinitron) Steve Guttag We forgot the crackers Gromit!!! Posts: 12814 From: Annapolis, MD Registered: Dec 1999 posted 05-31-2006 06:29 AM                     Actually, some of the first HD tubes were Trinitrons and where part of the HDVS package when HD first hit broadcast with open-reel 1" machines. While, the RCA triad could resolve better, it was a bear to keep converged, especially in the corners. With the Trinitron, and other "in-line" sets, the convergence is notably better and easier to keep but it is interesting when one puts up cross-hatch patterns and changes colors to see the cross hatch SHIFT as everything must align with its particular color. You don't get that in a triad system. Sony's "dead line" from the support wire was another thing against the Trinitron. However, overall, I liked the Trinitron's look...it does not beat a properly converged triad system but it was a reliable good looking picture.  |  IP: Logged Michael Barry Jedi Master Film Handler Posts: 584 From: Sydney, NSW, Australia Registered: Nov 1999 posted 05-31-2006 06:37 AM                     I saw a gorgeous HD Trinitron in a telecine bay a few years ago - they were working on 'Ali'. WOW. WOW! Never seen a video image like it - ever. I don't know if I ever will again. The closest I might come to it in the future might be a blu-ray/SED combo - who knows what results that combo may bring?  |  IP: Logged Mark Gulbrandsen Resident Trollmaster Posts: 16657 From: Music City Registered: Jun 99 posted 05-31-2006 06:47 AM                     quote: Steve Guttag Actually, some of the first HD tubes were Trinitrons and where part of the HDVS package when HD first hit broadcast with open-reel 1" machines. You are correct in that statement but the only way to actually make use of all the resolution afforded by the system and those tapes was to display them on the Sony built HD projection sets that were also supplied for that format. Those projection sets were typically used in stacked mode for increased brightness and looked remarkably good back then. I will never forget having to set up and run a film for Ultimatte at a SMPTE meeting in Chicago years back where both that systemn and the Sony HD system were discussed and demoed... After the Sony demo we ran the Ultimatte film and the audience literally let out a gasp since the film was so sharp after having watched the hd video..... At the end of the meeting the fun part was when all the Japaneese Sony engineers came to the back of the room to clamor and look over the Century C that had blown them out of the water...... They were amazed and obviously I think them seeing the 35mm film they knew they had a looooong way to go. And to this day they still have a looooong way to go! Mark  |  IP: Logged Louis Bornwasser Film God Posts: 4441 From: prospect ky usa Registered: Mar 2005 posted 06-01-2006 09:46 AM                        Mark: you are correct that Trinitrons are low res. I guess it depends on why you watch TV. My use is audio-in-the-background while reading; resolution does not mean much. They are, however, stable and reliable which is why I once preferred them. I once had a 7" Trintitron; when friends asked why my set was so small, I told them I was in the movie business. TV small; movie big. Louis  |  IP: Logged Frank Angel Film God Posts: 5305 From: Brooklyn NY USA Registered: Dec 1999 posted 06-03-2006 12:22 PM                        While video projectors for the home theatre market are typically LCD or DLP-based and are the size of cereal boxes, there is a cult of CRT projector fanatics who claim nothing comes near the quality of what a CRT will produce, and they won't look at anything projected unless it's from a CRT-based projector. Evidently these CRT projection units by Sony and others are readily available; a few years ago, a friend of mine sat me down to watch the opening of THE SOUND OF MUSIC off a standard DVD playing via this humungous three tube Sony CRT projector. Seems that lots of these projectors were sold to corporations that needed video projection before the days of the LCD projector technology. The minute the protable LCD and DLP mini projectors came on the scene, the monster CRT units were mothballed or sold to the resellers who refurbish them and sell them for 1/3rd their original price. I must say, the image was much richer and more impressive than any other video projection system I have ever seen. He claims that the CRT projectors can accept any rez signal with no problem. Thing is, you need a forklift to move them around and they pretty much completely dominate any room they are put in, and even at very reduced "previously owned" price, they still run about $9k - $10k. I have an Advent three CRT tube VideoBeam (nothing near the level of those industrials units above) that I got way back in 1975 or so. It never needed anything but a flyback transformer replacement sometime in the early 80s. Except for convergence tweaking every now and then (Advent allows you to align quadrants independently of each other making alignment very precise), the 8ft diagonal picture STILL looks damn good after all these years. There is something to be said for CRTs.  |  IP: Logged Mark Gulbrandsen Resident Trollmaster Posts: 16657 From: Music City Registered: Jun 99 posted 06-06-2006 10:36 PM                     quote: Frank Angel I have an Advent three CRT tube VideoBeam (nothing near the level of those industrials units above) that I got way back in 1975 or so. It never needed anything but a flyback transformer replacement sometime in the early 80s. Except for convergence tweaking every now and then (Advent allows you to align quadrants independently of each other making alignment very precise), the 8ft diagonal picture STILL looks damn good after all these years. There is something to be said for CRTs. WOW! I am amazed that it still works... I attended the very first Advent Video Beam "Tech school" at the Advent Factory so long ago that I had all but forgotten about it, I want to say it was in late 73 or early 74. The1000 and later 1000A sold for exactly $5,000.00 in early 1970's dollars and were rarely sold at discounted prices. The majority of them made their way into Bars, Restaurants, and Pizza Places. I can say that that TV was way ahead of anything else of its time and for some time to come. Its I.F. and video bandwidth was quite remarkable, good out to 4.5 mhz flat! So many other design features were state of the art including the quadrant convergence you mentioned, and dynamic focus. The CRT's were custom made by Clinton Electronics in Rockford, IL... and they are still around and can rebuild them. The first generation CRT's incorporated an internal schmidt optical system and these tubes were extremely expensive to manufacture. The Special Advent screen's surface was actually Kodak Ektalite material bonded to a concave vacuum molded surface. There was a very high reject rate on the screens of about 1 in 6! The early non cooled CRT's definately required the high reflectivity of that surface... the concave nature of it caused it to be extremely directional and you had to sit directly behind the set to see the brightest image and best color. Later Novatron CRT's were of the direct projection type and while providing a brighter image they compromised the ultra precise convergence and ultra sharp focus that the schmidt tubes afforded. Advent definately set precident bringing the home theater into reality way before DVD, Laser Disc and VHS tape existed... with that set and looking back at it all it should go down in some book as making a big mark technologically. A half decade after its appearance a flurry of Japaneese projection sets began to appear. The Advent TV caused the ultimate demise of Advent as a company because the extremely high startup costs were never fully recovered. Not disuaded HEnry Kloss founded Kloss Video and kept building projection televisions... Henry Kloss was indeed a genius! Mark  |  IP: Logged

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