12" 45 RPM records: What's the story?

What's the advantage of producing these? If there is one, why aren't they all 45RPM?

pawlowski613211-21-2006 5:37pm

rushton Details Discussions Posts This discussion Message User 2,445 posts 12-10-2006 at 10:57pm Copy Comment URL Report Comment Edit Delete If the original source is analogue tape, the tape can have print through that will sound like pre-echo in any subsequent playback media.
rushton Details Discussions Posts This discussion Message User 2,445 posts 12-11-2006 at 12:38am Copy Comment URL Report Comment Edit Delete Eldartford, thank you. I was aware of the cause and that newer formulations were more resistant. I'd never understood that print through was easy to edit out.