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In Reply to: The groove helix is a mirror-image of normal. posted by Kal Rubinson on November 26, 2013 at 06:43:28:
Thanks Kal. It took me a bit of effort to visualise this but drawing a spiral and an inverse spiral on paper and placing them on my rotating turntable helped me see the light.
It made me wonder why record companies didn't regularly produce discs that played inside out when faced with cutting loud musical finales. Then I remembered autochangers and automatic end of side lifting devices. Such discs would not have been playable by the majority of consumers of the day as they couldn't have placed the pickup at the start of the spiral. Shame, missed opportunity.
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Follow Ups
- RE: The groove helix is a mirror-image of normal. - PAR 09:55:55 11/26/13 (0)
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