Engineering:Sony PVM-4300

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Short description: Largest CRT display ever produced

Sony PVM-4300
Front left face view of the monitor, with the included TV stand
ManufacturerSony
Product familyTrinitron, PVM
TypeCRT video monitor
Introductory price
Display45-inch (43-inch viewable) aperture grille cathode-ray tube
Dimensions105 × 92.5 × 76.7 cm (41.3 × 36.4 × 30.1 in)
Mass199.6 kg (440 lb)
Related articlesSony KV-45ED1T

The Sony Trinitron PVM-4300, also known as the KX-45ED1, is a cathode-ray tube (CRT) monitor released by Sony in 1989. It is the largest CRT monitor ever manufactured, with a 43-inch (110 cm) diagonal display and a weight of around 200 kilograms (440 lb).[1][2] Development of the display was finished in September 1987; it was put on sale in Japan in April 1989 and in the United States in 1990.

When documentary evidence of the monitor declined following its release, the monitor became famous among CRT enthusiasts. In 2022, the only known extant unit was rediscovered in Osaka, Japan and acquired by the YouTuber and CRT enthusiast ShankMods.

History

Development

In the late 1980s, Sony began developing a 43-inch display tube, which was finished in September 1987. The PVM-4300 was unveiled in a 1988 issue of the Japanese DIGIC magazine and in American tech publications, with no official release date given.[3][4]

Jim Palumbo, president of Sony's Consumer Display Products Co., said that the PVM-4300 was a "positioning statement" with potential to become a standard part of Sony's CRT catalog, even if not many were sold.[5] Workers assembled the monitors by hand.[6]

Release and sales

The PVM-4300 was released by Sony in Japan in April 1989 for an introductory price of ¥2.6 million in Japan.[7][8] Around twenty sets were imported into the United States around January 1990, with an introductory price of $39,999.99[5] ($101,463 in 2024). It was described as being aimed at the "videophile and elite-consumer market."[9]

In April 1990, Jim Palumbo reported to the Sun Sentinel that only three PVM-4300 sets had been sold in the United States,[6] although a month earlier he had told the Chicago Tribune that "at least four or five" had been sold.[5]

Back view of the monitor

Obscurity and conservation

Following its release in the late 1980s, photographic and documentary evidence of the monitor began to dry up, which, in addition to its limited release, gained it a somewhat legendary status among enthusiasts of CRT monitors.[10][11]

In October 2022, American hardware modder and YouTuber Shank Mods tracked down a functional PVM-4300, one of the last, in the second-floor waiting room of Chikuma Soba, a soba noodle restaurant in Osaka, Japan. The location was due to close permanently for demolition only days after this discovery.[10] Shank, with the help of a local and a heavy machinery freight company, arranged for the monitor to be shipped to the United States. Upon arrival, it was thoroughly tested, serviced and studied by enthusiasts.[10][11]

Specifications

Top view of the monitor with a calico cat
Top view of the monitor with a calico cat for scale

The PVM-4300 has a 45-inch (114 cm)—with a 43-inch (109 cm) viewing area—color Trinitron Microblack CRT picture tube, which is the largest ever produced.[7] It can display a standard interlaced image as well as a 480p picture at a 60 Hz refresh rate, using improved-definition television (IDTV), which used a digital frame buffer to deinterlace video.[12] The monitor contains two RGB inputs at 15.75 and 31.5 kHz to allow for native 480p inputs.[13] It does not have a built-in TV tuner, although Shank Mods has said that a version called KV-45ED1T was available on the Japanese market that bundled an external TV tuner, model VT-X5R, mounted in a drawer integrated to the bottom of the monitor chassis, and the included remote provided buttons to control it. The version he has is the KX-45ED1.[14]

According to CRT Database, the unit weighs 199.6 kg (440 lb), and measures at 105 × 92.5 × 76.7 cm (41.3 × 36.4 × 30.1 in).[15]

Reception

Eric Zorn of the Chicago Tribune expressed his astonishment at the size and of the cost of the PVM-4300, writing: "This TV set is to your TV set what your TV set is to an old Popsicle stick in the gutter with ants on it."[5] A review in the Sun Sentinel expressed a similar sentiment to its cost and praised the monitor for its "brightness, clarity and sharpness of color." The review says that the PVM-4300 is a higher quality display than larger rear-projection television (RPTV) sets, but notes that RPTV technology has been improving.[6] A 1989 issue of Video Review described it as the "best-looking, big-screen set we've ever seen", but also said it's "designed more as a statement than a conventional product."[16]

Shank, after acquiring the set in 2022, described it as looking "incredible" in person.[11]

  • Front view of the set
    Front view of the set
  • Internal view of the set, showing the electronic components inside
    Internal view of the set, showing the electronic components inside
  • View of the slide-out control tray at the bottom of the monitor
    View of the slide-out control tray at the bottom of the monitor
  • Front right face view of the set
    Front right face view of the set

References

  1. ↑ Smil, Vaclav (May 14, 2024) (in en). Size: How It Explains the World. HarperCollins Publishers. pp. 29–30. ISBN 978-0-06-332410-7. https://books.google.com/books?id=C1oa0AEACAAJ. 
  2. ↑ Poelman 2024, p. 1.
  3. ↑ Lachenbruch, David (November 1988). "Video News". Radio-Electronics 59 (11): 6–7. https://archive.org/details/radio_electronics_1988-11/page/n7. Retrieved February 5, 2025. 
  4. ↑ "トリニトロンとは何か". DIGIC 9: 10–11. October 1988. https://bouya.officew.jp/digic-vol-9/. Retrieved February 5, 2025. 
  5. ↑ 5.0 5.1 5.2 5.3 Zorn, Eric (March 6, 1990). "To get the big picture, you'll need a big wallet". Chicago Tribune. https://www.chicagotribune.com/news/ct-xpm-1990-03-06-9001190332-story.html. 
  6. ↑ 6.0 6.1 6.2 Hunt, Dennis (April 22, 1990). "For $40,000, TV's picture better be sharp". South Florida Sun Sentinel. https://www.sun-sentinel.com/1990/04/22/for-40000-tvs-picture-better-be-sharp/. 
  7. ↑ 7.0 7.1 Beschizza, Rob (June 23, 2024). "Sony's PVM-4300 was the "biggest CRT ever made"". Boing Boing. https://boingboing.net/2024/06/23/sonys-pvm-4300-was-the-biggest-crt-ever-made.html. 
  8. ↑ Farquhar, Dave (June 19, 2024). "The biggest CRT ever made: Sony's PVM-4300". https://dfarq.homeip.net/the-biggest-crt-ever-made-sonys-pvm-4300/. 
  9. ↑ "ELECTRONICS WISHLIST". Popular Electronics 7 (2): 58. February 1990. https://www.worldradiohistory.com/Archive-Poptronics/90s/90/PE-1990-02.pdf. Retrieved February 5, 2025. 
  10. ↑ 10.0 10.1 10.2 Orland, Kyle (December 23, 2024). "The quest to save the world's largest CRT TV from destruction". Ars Technica. https://arstechnica.com/gaming/2024/12/retro-gamers-save-one-of-the-last-45-inch-crt-tvs-in-existence/. 
  11. ↑ 11.0 11.1 11.2 Tyson, Mark (December 23, 2024). "Console modder hunts down world's largest CRT TV — saves it from noodle restaurant demolition death half the way around the globe" (in en). https://www.tomshardware.com/monitors/console-modder-hunts-down-worlds-largest-crt-tv-saves-it-from-noodle-restaurant-demolition-death-half-the-way-around-the-globe. 
  12. ↑ Gardner 1989, p. 30.
  13. ↑ Sony Monitor Manual: PVM 4300 Operating Instructions. Sony Corporation. 1989. pp. 12. https://archive.org/details/sony_PVM-4300_Operating_Instructions.PDF/page/n11. 
  14. ↑ More Shank Mods (31 December 2024). "Overview of the KX45ED1 / PVM-4300 (Worlds Largest CRT)" (in en) (video). https://www.youtube.com/watch?v=Dgkw3uu19V8. 
  15. ↑ "Sony PVM-4300 | CRT Database" (in en). December 22, 2024. https://crtdatabase.com/crts/sony/sony-pvm-4300. 
  16. ↑ Fagan, Gregory P. (August 1989). "Sony's 43-inch Direct-View TV". Video Review 10 (5): 32. https://archive.org/details/video-review-august-1989/page/n33. Retrieved February 5, 2025. 

Bibliography



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