Ceramic and Crystal cartridge specs. - Page 5 - UK Vintage Radio Repair and Restoration Discussion Forum

af024 · 10th Nov 2022, 1:59 pm

Are stereo LP tips different from mono (microgroove, not 78 rpm) tips then?
The plot thickens ...

david freeman · 10th Nov 2022, 4:11 pm

The rubber shank mounting for the TC8S was not the same as the one in the mono TC8 cartridges. It was definitely a softer, dare I say, more compliant mounting, which I suspect did provide some degree of vertical compliance.
Also, I seem to recall Ronette stylii having similar properties across the mono/ stereo range, only the mounting shanks differing as per the TC8 range.
Also, In reply to the previous post, originally, a mono stylus had a radius of 1 mil, which was used until the 0.7 mil radius was introduced in order to play stereo records.

Edward Huggins · 11th Nov 2022, 10:09 am

Quote:

Originally Posted by af024

Are stereo LP tips different from mono (microgroove, not 78 rpm) tips then?
The plot thickens ...

There's no plot at all. Stereo styli have been in established use for 64 years. Yet in spite of this there is still confusion about them. And not only do they have a different tip diameter, but also some have different profiles.

af024 · 13th Nov 2022, 5:16 pm

It's interesting to note that manufacturers progressively worked at making mono cartridges stereo compatible, and presumably also made mono (0.001" tip radius) and stereo (0.0007" tip radous) styli. What seems amazing to me is that the 45 deg cut for stereo records didn't fully take into account the backward compatibility issue by making them playable using the original 0.001" tip radius stylus.

This is an interesting website:-http://pspatialaudio.com/stylus_grooves.htm#:~:text=A%20original%2C%20stand ard%20microgroove%20diamond,as%20illustrated%20at% 20(a).

No wonder the purchasers of cartridges and styli (and to some extent the sellers too!) were somewhat bamboozled! I mean it's not as if the cartridge has SC written on the side of it or a stylus has 0.001" tip radius written on it. These days I'm not even sure we can rely upon the ST number of the styli to deduce whether its a 0.001" or 0.0007" tip radius! Mmmmm... as I say a minefield.

af024 · 13th Nov 2022, 5:24 pm

Maybe all ST styli were 0.0007" tip radius?

astro63 · 29th Jan 2023, 6:28 pm

Attached image of BSR TC10, 12, 14 Cartridges found on the web

Cathovisor · 8th May 2023, 10:47 pm

One thing I would like to see here (if possible) is data on the Sonotone 25x9 and 35x9 cartridges - and what the Garrard equivalents are, e.g. KS41A?

PJC58-Hythe · 14th Nov 2023, 5:19 pm

While searching online for something else I stumbled on a document about Astatic cartridges which has cross reference data and also technical data so I thought I would share here for interest.

hayerjoe · 20th Nov 2023, 9:03 am

hi Peter, is it my PDF reader at fault? but I can only see 5 pages of the alleged 35+. the missing pages are temptingly interesting

Reelman · 20th Nov 2023, 12:53 pm

Quote:

Originally Posted by hayerjoe

hi Peter, is it my PDF reader at fault? but I can only see 5 pages of the alleged 35+. the missing pages are temptingly interesting

Yes, there are only 5 pages. It stops at page 4 of the original.

Peter

PJC58-Hythe · 24th Nov 2023, 9:11 am

I have only included those pages for the technical specs if you who want the full document this is the link https://www.canadianastatic.com/uplo..._reference.pdf

10th Nov 2022, 1:59 pm	#81
af024 Octode Join Date: Jan 2003 Location: Ashby-de-la-Zouch (it's not by the sea) Posts: 1,242	Re: Ceramic and Crystal cartridge specs. Are stereo LP tips different from mono (microgroove, not 78 rpm) tips then? The plot thickens ... __________________ Now where on earth did I remove that from?

10th Nov 2022, 4:11 pm	#82
david freeman Hexode Join Date: Aug 2005 Location: Lincoln, Lincolnshire, UK. Posts: 258	Re: Ceramic and Crystal cartridge specs. The rubber shank mounting for the TC8S was not the same as the one in the mono TC8 cartridges. It was definitely a softer, dare I say, more compliant mounting, which I suspect did provide some degree of vertical compliance. Also, I seem to recall Ronette stylii having similar properties across the mono/ stereo range, only the mounting shanks differing as per the TC8 range. Also, In reply to the previous post, originally, a mono stylus had a radius of 1 mil, which was used until the 0.7 mil radius was introduced in order to play stereo records. Last edited by david freeman; 10th Nov 2022 at 4:17 pm.

13th Nov 2022, 5:16 pm	#84
af024 Octode Join Date: Jan 2003 Location: Ashby-de-la-Zouch (it's not by the sea) Posts: 1,242	Re: Ceramic and Crystal cartridge specs. It's interesting to note that manufacturers progressively worked at making mono cartridges stereo compatible, and presumably also made mono (0.001" tip radius) and stereo (0.0007" tip radous) styli. What seems amazing to me is that the 45 deg cut for stereo records didn't fully take into account the backward compatibility issue by making them playable using the original 0.001" tip radius stylus. This is an interesting website:-http://pspatialaudio.com/stylus_grooves.htm#:~:text=A%20original%2C%20stand ard%20microgroove%20diamond,as%20illustrated%20at% 20(a). No wonder the purchasers of cartridges and styli (and to some extent the sellers too!) were somewhat bamboozled! I mean it's not as if the cartridge has SC written on the side of it or a stylus has 0.001" tip radius written on it. These days I'm not even sure we can rely upon the ST number of the styli to deduce whether its a 0.001" or 0.0007" tip radius! Mmmmm... as I say a minefield. __________________ Now where on earth did I remove that from? Last edited by af024; 13th Nov 2022 at 5:22 pm.

13th Nov 2022, 5:24 pm	#85
af024 Octode Join Date: Jan 2003 Location: Ashby-de-la-Zouch (it's not by the sea) Posts: 1,242	Re: Ceramic and Crystal cartridge specs. Maybe all ST styli were 0.0007" tip radius? __________________ Now where on earth did I remove that from?

29th Jan 2023, 6:28 pm	#86
astro63 Pentode Join Date: Mar 2013 Location: Norfolk, UK. Posts: 240	Re: Ceramic and Crystal cartridge specs. Attached image of BSR TC10, 12, 14 Cartridges found on the web Attached Thumbnails

8th May 2023, 10:47 pm	#87
Cathovisor Banned Join Date: Dec 2022 Location: Peterborough, Cambridgeshire, UK. Posts: 418	Re: Ceramic and Crystal cartridge specs. One thing I would like to see here (if possible) is data on the Sonotone 25x9 and 35x9 cartridges - and what the Garrard equivalents are, e.g. KS41A?

20th Nov 2023, 9:03 am	#89
hayerjoe Hexode Join Date: Oct 2020 Location: Bridgewater, Tasmania, Australia Posts: 447	Re: Ceramic and Crystal cartridge specs. hi Peter, is it my PDF reader at fault? but I can only see 5 pages of the alleged 35+. the missing pages are temptingly interesting __________________ Regards Joe "Hayer Joe, where ya going with that deck in your hand?" - Jimi Hendrix Experience

24th Nov 2023, 9:11 am	#91
PJC58-Hythe Heptode Join Date: Sep 2010 Location: Hythe, Hampshire, UK. Posts: 597	Re: Ceramic and Crystal cartridge specs. I have only included those pages for the technical specs if you who want the full document this is the link https://www.canadianastatic.com/uplo..._reference.pdf __________________ Peter - M0HYT - BVWS Member - GQRP Club http://www.retroworkshop.co.uk