Kaberonie said:
whats the diff between LPs and CDs and 7''? educate me.
CD = compact disc, any type (jewel case, digipak, cardboard sleeve promo - any disc that can be played in a cd player, including mini CDs and shaped CDs)
LP = 'Long Player' or 'Long Playing' record, i.e. 12" vinyl
7" = you guessed it ... 7" vinyl
The number refers to the diameter of the disc. So in that case, I guess you could say CDs could be referred to as 5"s. In fact, sometimes CD singles are called
CD5s.
Different vinyl discs spin at different speeds on the turntable, depending on how the record was pressed. This is called the
RPM, or rotations per minute. The speed of 7" and 12" vinyl records vary between 33 1/3 rpm, 45 rpm, and 78 rpm. 33 1/3 is the most widely used on LP, 45 is normally reserved for 7" singles, and 78 is virtually unused nowadays.
Hope that clears a little of the mystery up.