Vertical CD player

Vertical CD player

Posted by geoffkait on September 13, 2023 at 03:11:24

In Reply to: RE: Absolute level of CD during play posted by jea48 on September 12, 2023 at 20:35:04:

Whether the disc is spinning horizontally or vertically, the dynamic stability of the disc should be obtained and verified. There can sometimes be mechanisms in a CD player for maintaining dynamic stability of the disc but many players obviously don't control dynamic stability, since the maybe designers are unaware of the issue, who knows, allowing the disc to flutter and wobble during play.

Wobbling and fluttering are what produces laser read errors due to nano scale dimensions of the data spiral and laser beam width. Obviously for some players such as Sony SACD player, designed so the disc can't move during play, obtaining absolute level is not necessary. It would be an interesting experiment to see how important absolute verticality is for vertical players.

"Little things sometimes have big consequences."

One wonders if anyone ever compared vertical vs horizontal players for sound quality. What advantage do vertical player designers claim?

Pop quiz - for vertical player, how would you ensure the disc is absolutely vertical while spinning?

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Follow Ups Full Thread

Topic - Absolute level of CD during play - geoffkait 05:49:36 09/10/23 (26)

RE: Absolute level of CD during play - John Elison 08:18:47 08/07/24 (1)

RE: Absolute level of CD during play - Geoffkait 08:14:16 08/21/24 (0)

RE: Absolute level of CD during play - jea48 20:35:04 09/12/23 (1)

Vertical CD player - geoffkait 03:11:24 09/13/23 (0)

I understand now - 13th Duke of Wymbourne 19:31:30 09/11/23 (2)

I see said the blind carpenter as he picked up his hammer and saw. Nt - geoffkait 19:37:31 09/11/23 (1)

How about I make a label that says 'LEVEL = OK' and place it on the player? (nt) - 13th Duke of Wymbourne 09:13:36 09/12/23 (0)

RE: Absolute level of CD during play - tomservo 07:26:26 09/10/23 (18)

Buffers - geoffkait 11:27:52 09/11/23 (0)

RE: Absolute level of CD during play - geoffkait 07:55:41 09/10/23 (16)

RE: Absolute level of CD during play - tomservo 10:28:35 09/10/23 (15)

RE: Absolute level of CD during play - geoffkait 11:16:37 09/10/23 (14)

RE: Absolute level of CD during play - tomservo 17:45:28 09/10/23 (13)

RE: Absolute level of CD during play - geoffkait 22:25:25 09/10/23 (12)

RE: Absolute level of CD during play - tomservo 10:05:56 09/11/23 (11)

It's not that complicated - geoffkait 19:46:38 09/11/23 (10)

RE: It's not that complicated - tomservo 13:31:58 09/13/23 (9)

Geez, you're doing it again - geoffkait 03:15:24 09/14/23 (8)

how to ensure the disc is absolutely level during play - hawkmoon 09:34:10 10/06/23 (7)

RE: how to ensure the disc is absolutely level during play - geoffkait 03:16:31 10/07/23 (4)

Thanks! Nt - hawkmoon 08:10:34 10/07/23 (3)

One more thing...- - geoffkait 05:56:57 10/08/23 (2)

RE: One more thing...- - Tre' 15:33:35 11/10/23 (1)

RE: One more thing...- - Dryginger2 15:07:32 11/11/23 (0)

his example is how you balance a tire, and not ensuring an absolute level condition - Story 10:08:06 10/06/23 (1)

You are confused. - geoffkait 03:18:42 10/07/23 (0)

Follow Ups

Vertical CD player - geoffkait 03:11:24 09/13/23 (0)

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