RE: I am sure John Ellison will have neat spreadsheet for this

Posted by John Elison (A) on January 26, 2015 at 10:06:11

In Reply to: I am sure John Ellison will have neat spreadsheet for this posted by Penguin on January 26, 2015 at 09:08:15:

No, I don't have a spreadsheet on that one.

The rationale for keeping the arm/cartridge resonance frequency above 8-Hz is based on warp frequencies estimated to be in the neighborhood of 4-Hz and below if I remember correctly. Maybe it was 6-Hz and below.

Anyway, Bry is correct about the revolution frequency being 0.555-Hz. This would be the frequency of an off-center spindle hole. An elliptical groove would produce a frequency of 1.11-Hz. Warps can be anywhere at or above those frequencies, but probably rarely higher than 6-Hz.

Best regards,
John Elison

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Follow Ups Full Thread

Topic - What is the frequency of warp tones on a 33.3 RPM record? - Tre' 08:28:59 01/26/15 (7)

I am sure John Ellison will have neat spreadsheet for this - Penguin 09:08:15 01/26/15 (5)

RE: I am sure John Ellison will have neat spreadsheet for this - John Elison 10:06:11 01/26/15 (4)

But but but - Penguin 10:26:43 01/26/15 (3)

RE: But but but - John Elison 11:48:11 01/26/15 (2)

I ain't no good with them excels - Penguin 16:32:27 01/26/15 (1)

Yeah, I think we should just let sleeping dogs lie. ;-) /nt\ - John Elison 19:09:18 01/26/15 (0)

The record revolves every 1.8 seconds, or .55Hz - Bry 09:07:06 01/26/15 (0)

Follow Ups

RE: I am sure John Ellison will have neat spreadsheet for this - John Elison 10:06:11 01/26/15 (4)

But but but - Penguin 10:26:43 01/26/15 (3)

RE: But but but - John Elison 11:48:11 01/26/15 (2)

I ain't no good with them excels - Penguin 16:32:27 01/26/15 (1)

Yeah, I think we should just let sleeping dogs lie. ;-) /nt\ - John Elison 19:09:18 01/26/15 (0)

RE: I am sure John Ellison will have neat spreadsheet for this

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