At a certain point records can become cramped with grooves and have to expand in size to accommodate the extra music play while maintaining the quality of the audio.
Dimension of vinyl records.
Contour design see drawings fig.
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For singles covers of 7 inches are common because of the format s smaller size.
The 7 inch or 45 is the most common form of vinyl single.
7 inch 10 inch and 12 inch.
You may think are these related to the magical numbers from lost.
In 1931 rca victor introduced vinyl plastic based victrolac as a material for unusual format and special purpose records.
At their peak in the 1950 s and 60 s the 7 inch helped to fuel the early years of rock and roll culture thanks to their relative affordability compared to more expensive 12 inch lps.
Flush design 075 010 015 075 010 075 010 b.
33 1 3 rpm phonograph records for home use.
Center hole diameter same as 10 0 286 0 001 0 002 same as 10 lead in spirals.
33 45 and 78 rotations per minute rpm.
One was a 16 inch 33 1 3 rpm record used by the vitaphone sound on disc movie system.
In 1932 rca began using victrolac in a home recording system.
Us vinyl sales in 2017 reached 15 6 million and 16 7 million for 2018.
Vinyl records typically come in three speeds.
Vinyl sales in the uk reached 2 8 million in 2012.
The difference in vinyl record speeds 33 45 and 78 records 33 45 78.
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6 7 8 1 32 9 7 8 1 32 11 7 8 1 32 thickness a.
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Vinyl record album covers are usually 12 inches by 12 inches for lp albums.
Vinyl record sizes differ based on how much music is stored on the surface of the disk.
Records come in three standard sizes.
The lp was soon confronted by the 45 a 7 inch 180 mm diameter fine grooved vinyl record playing at 45 rpm.
The most common sizes are seven 10 and 12 inches in diameter but size isn t the only way to identify what kind of vinyl record you have.
Records in the 78 rpm format were usually sold with 10 inch covers but are uncommon today.