![]() Someone in the company came up with the idea of making and selling turntables designed exclusively for 45s. ![]() READ MORE: New report alleges James Brown was murdered in 2006įirst, RCA wanted its new format to crush the LPs being issued by Columbia and its licensed partners. ![]() We have to look at geometry again and the curvature of the grooves of a record. Why that speed? Let me stop you if you deduced that 78 minus 33 equals 45. READ MORE: Ozzy Osbourne admitted to hospital with flu ‘complications’ The solution was to come up with yet another vinyl format that was seven inches in diameter and spun at 45 RPM. Besides, RCA reasoned, people have been happy with records featuring one song per side for 50 years. RCA was not pleased that Columbia had scooped it with RCA’s own technology and refused to license the 33 1/3 format for its releases. Doing the math (π x 33 1/3 x the outside diameter of the grooves + the inside diameter of the grooves ÷ 2) meant that Columbia could promise up to 24 minutes per side of one of their new “long-playing” records. These “microgrooves” allowed for a much longer spiral: 1,600 feet. Not only did vinyl last much longer, but the grooves could also be placed much, much closer together and played with a stylus that was tinier and far sharper. Vinyl was much more durable than the shellac-based compounds used with 78s. RCA’s rival, Columbia Records, picked up on the technology as they were experimenting with a new plastic substance called polyvinyl chloride - vinyl for short - which had gone into use in the 1920s for sewer pipes. So in an extremely silly move, RCA let a bunch of patents associated with their 33 1/3 RPM disc expire.įast-forward to 1948. RCA tried to introduce the new records to the general public as an alternative to the 78, but it was the Great Depression and the entire recorded music industry saw a sales collapse of 95 per cent through 19. People were not in the mood for a new recorded music format. READ MORE: Bow Wow’s girlfriend details alleged abuse in 911 call That gives us a rotational speed of 33.33 RPM. To make the audio last the same 11 minutes, the math dictated that the motor be geared down to 108:1. To match up the film with sound, a company called Vitaphone introduced a system that used a standard 3600 RPM motor to rotate a soundtrack disc. Canada hopes to boost regulation on natural health products.Vatican formally renounces Discovery Doctrine after decades of Indigenous demands.Turpel-Lafond returns honorary degree granted by Simon Fraser University in B.C.CRA to roll out new automatic tax filing system.
0 Comments
Leave a Reply. |