RE: Soundsmith explains RIAA and Strain Gauge

Posted by coffee-phil (A) on December 11, 2010 at 21:04:07

In Reply to: Soundsmith explains RIAA and Strain Gauge posted by Retipper on December 11, 2010 at 13:48:58:

Most of what Peter said in his post makes sense to me. From 50 Hz to 500 Hz and from 2121 Hz up RIAA records are recorded constant amplitude so an amplitude responding cartridge such as a ceramic or strain gauge will have the correct response through those parts of the spectrum however from 500 Hz to 2121 Hz the records are cut constant velocity so the response will fall 6 dB / octave over those ~ two octaves. He points that out but says it is a good trade to accept that rather than use EQ to fix it. For a cheap system with a ceramic cartridge who would argue the point but for a high end system using a strain gauge I have to believe the effort would be justified. He points out that the EQ will introduce phase shift. This of course is true but the points of inflection in the recording process (500 Hz and 2121 Hz) introduce phase shift as well. I would think one would want a network on the playpack end which is the inverse of the record EQ. This network wont be the same as the one used with a velocity responding cartridge.

Phil

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Follow Ups Full Thread

Topic - Soundsmith explains RIAA and Strain Gauge - Retipper 13:48:58 12/11/10 (16)

RE: Soundsmith explains RIAA and Strain Gauge - Werner 03:17:42 12/12/10 (0)

A couple of questions... - tubesforever 23:11:52 12/11/10 (9)

Interesting frequency response... - John Elison 10:07:36 12/12/10 (8)

RE: Interesting frequency response... - Retipper 17:22:07 12/12/10 (6)

RE: Interesting frequency response... - John Elison 18:45:06 12/12/10 (5)

RE: Interesting frequency response... - Werner 22:34:39 12/12/10 (4)

Interesting! Thanks, Werner.... - John Elison 11:27:41 12/13/10 (3)

RE: Interesting! Thanks, Werner.... - Werner 10:10:02 12/14/10 (0)

RE: Interesting! Thanks, Werner.... - 0luke1 17:05:50 12/13/10 (1)

Yeah, I really liked it when I heard it, too. /nt\ - John Elison 17:14:35 12/13/10 (0)

Boy that graph sure does sum up the sonics of the SG1&2 - tubesforever 16:20:01 12/12/10 (0)

RE: Soundsmith explains RIAA and Strain Gauge - coffee-phil 21:04:07 12/11/10 (0)

Thanks for an excellent explanation... - John Elison 18:38:01 12/11/10 (0)

Thanks, - Nasty 16:16:43 12/11/10 (2)

RE: Thanks, - Retipper 06:01:04 12/12/10 (1)

RE: Thanks, - Solidcore 11:23:32 12/12/10 (0)

Follow Ups

RE: Soundsmith explains RIAA and Strain Gauge - coffee-phil 21:04:07 12/11/10 (0)

RE: Soundsmith explains RIAA and Strain Gauge

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