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In Reply to: Re: Yes, but for a given linear offset. posted by John Elison on November 15, 2006 at 05:17:34:
What would a tonearm designer pick as the first design parameter? Wouldn't it logical for it to be the null points, IE linear offset? That is assuming it was not dictated by something so pragmatic as the need to fit in an existing hole? But even assuming that the linear offset still dictates the rest that is unless he is designing to use a broad range of popular null point pairs, IE linear offsets.The SME product line over the years has used no less than 5 different linear offsets.
Obviously if one knows the offset angle AND the effective length the linear offset is known as it is fixed and for each combination unique.
If you read the whole thread you will recall Brian knew only the effective length of his DIY tonearm and could not correctly align it. Without knowing the targeted linear offset he would not be able to calculate the other parameters. And there are several to choose from.
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Follow Ups
- Yes, I meant as a design parameter. - Garth 11/15/0607:18:35 11/15/06 (11)
- At least for the Baerwald alignment - jnorv 15:41:44 11/15/06 (8)
- It is true of ANY null points one chooses - Garth 20:37:32 11/15/06 (6)
- It has been a while since I took Variational Calculas - jnorv 09:10:18 11/16/06 (5)
- See, change the null points and you change at least the effecive length. - Garth 11:51:51 11/16/06 (4)
- For Baerwald's difinition of minimum distortion - jnorv 16:42:29 11/16/06 (3)
- Re: For Baerwald's difinition of minimum distortion - John Elison 21:01:38 11/16/06 (2)
- True, but obviously they are no different in terms of ... - Garth 22:15:14 11/16/06 (1)
- Re: True, but obviously they are no different in terms of ... - John Elison 15:39:20 11/17/06 (0)
- Re: At least for the Baerwald alignment - John Elison 19:45:04 11/15/06 (0)
- Re: Yes, I meant as a design parameter. - John Elison 08:42:48 11/15/06 (1)
- So what? - Garth 09:09:00 11/15/06 (0)