davidsss Posted September 9, 2009 Author Share Posted September 9, 2009 Wow, I wrote this ages ago. I might try and find some reading on tonearms and see if I can come up with somehing. Bear in mind that if I do this I might throw some statements out there just to incite better informed people to either confirm my thoughts or correct me, I have no problem with this. I'll see if I can find some time. I seemed to get most of it right when I wrote this so I should be fine DS Link to comment Share on other sites More sharing options...
Grumpy Posted September 9, 2009 Share Posted September 9, 2009 Hey! how did I miss this fantastic thread David? Can't wait for the 'arm' workings chapter. Thanks david Link to comment Share on other sites More sharing options...
norpus Posted September 9, 2009 Share Posted September 9, 2009 I did not see the original David (probably becasue I did not want to get another excuse to get into another source/$sink) but I sure enjoyed the read tonite - your words form easy mental images That reminds me I have to pick up from work next week my 'balance bench' (our lab/manufacturing facility is closing down ). Its a very thick and heavy slab of granite (prob 150-200kgs?) that will form part of a norpus vinyl setup one day - likely another rectangular hole through my floorboards onto a tall concrete pile cemented well into the ground. Excessive mass and true isolation from the 'surf' when the IB wind blows and rocks the timbers Link to comment Share on other sites More sharing options...
Guest cyxg Posted September 27, 2009 Share Posted September 27, 2009 Great info from David,thanks Link to comment Share on other sites More sharing options...
Guest georgesong Posted September 30, 2009 Share Posted September 30, 2009 David! Good infomation Link to comment Share on other sites More sharing options...
Under Hifi Posted November 6, 2010 Share Posted November 6, 2010 Thanks for that - it really helped me understand the basic principals of a turntable. Would love to see a write up on tonearms and cartridges Link to comment Share on other sites More sharing options...
davidsss Posted November 7, 2010 Author Share Posted November 7, 2010 I did do another thread but I can't remember whether it was on arms or carts. I'll try and find it sometime. DS Link to comment Share on other sites More sharing options...
houdinifangs Posted August 28, 2011 Share Posted August 28, 2011 Bump - what a great thread - start at page 1 Thanks David Link to comment Share on other sites More sharing options...
masliko Posted July 9, 2014 Share Posted July 9, 2014 I glad this is pinned now.good info. Link to comment Share on other sites More sharing options...
Newman Posted July 9, 2014 Share Posted July 9, 2014 On Chrome I am not seeing 4 of the images (in sequence, #4, 5, 7, 8) in post #1 and one (in sequence, #3) in #2 -- don't know why? Nice job David. Link to comment Share on other sites More sharing options...
davidsss Posted July 9, 2014 Author Share Posted July 9, 2014 I suspect the pics are now gone as they were internet links. From memory I also wrote one on tonearms but someone else would need to do an explanation of cartridges. I don't know enough. DS Link to comment Share on other sites More sharing options...
proftournesol Posted July 12, 2014 Share Posted July 12, 2014 Just a reminder, if you have any concerns about a post please report these privately to the moderator team using the report function rather than posting the concerns publicly in the thread Link to comment Share on other sites More sharing options...
Newman Posted July 12, 2014 Share Posted July 12, 2014 Hi David, Post #1 says "Belt Drive: this is where the motor is separated from the platter and the platted (sic) is driven by a belt. The idea is really an obvious way of decoupling the motor from the platter ...". I think that the last sentence is confusing to the newcomer who this post is aimed at, because the function of the belt is to *couple* the motor to the platter/turntable. My thoughts were something like “….The idea is that the belt can couple the motor's torque to the platter, but isolate some of the motor's vibration from the platter, and hence the LP too.†Hope this helps. Link to comment Share on other sites More sharing options...
proftournesol Posted July 12, 2014 Share Posted July 12, 2014 Doesn't the belt do a bit of both coupling and decoupling? It has to connect the motor to the platter and rotate the platter at correct speed but also not transmit motor vibrations Link to comment Share on other sites More sharing options...
Newman Posted July 12, 2014 Share Posted July 12, 2014 Yes, agree prof. I think that's what my suggested words say. cheers Link to comment Share on other sites More sharing options...
metal beat Posted July 12, 2014 Share Posted July 12, 2014 The belt decouples the motor and any vibration from the platter while spinning at 33.3 or 45rpm. Direct drive couples the motor to the platter. David is 100% correct and we are polluting this thread again thanks to .... 1 Link to comment Share on other sites More sharing options...
Newman Posted July 12, 2014 Share Posted July 12, 2014 The belt decouples the motor and any vibration from the platter while spinning at 33.3 or 45rpm. Direct drive couples the motor to the platter. David is 100% correct and we are polluting this thread again thanks to .... "the motor", no, the belt actually *couples* the motor to the platter. Quite the opposite thing, really. "any vibration", exaggeration, would be better to say "some vibration, if the belt is a soft rubber type". It's only a very small suggested improvement to the original article. I'm surprised at how it is being received. Link to comment Share on other sites More sharing options...
davidsss Posted July 12, 2014 Author Share Posted July 12, 2014 I think most people understand the point. DS 1 Link to comment Share on other sites More sharing options...
Newman Posted July 13, 2014 Share Posted July 13, 2014 Certainly experienced turntable owners do, but they are not the audience. I was applying the 'outsider test', and I think it is a worthwhile small improvement. Link to comment Share on other sites More sharing options...
Tasebass Posted July 13, 2014 Share Posted July 13, 2014 ooooooo!!...this threads going "flat earth"!!!.....Keep it going!! Link to comment Share on other sites More sharing options...
Tom Bloen Posted August 18, 2014 Share Posted August 18, 2014 Wikipedia has a lot of information about vinyl records and turntables: http://en.wikipedia.org/wiki/Vinyl_record http://en.wikipedia.org/wiki/Turntable You find there the history of vinyl recordings and a lot of to the point information about records and turntables (and beautiful images of the groove itself). So I suppose it is a bit spoiled effort to tell the story one more time. People who want to buy their first turntable mostly don’t start reading a lot about vinyl recordings and phono equipment. They buy a (second hand) turntable, cartridge, pre-amp and records. Anyway, after some time they get a bit curious about their choice. Was it a good buy? Probably it is this group of vinyl owners who are really interested in information about phono equipment. Because they want to buy something better, but what is better? Just a more expensive turntable and phono cartridge? Link to comment Share on other sites More sharing options...
blakey72 Posted December 13, 2015 Share Posted December 13, 2015 I want to know more ! Link to comment Share on other sites More sharing options...
rastus Posted April 13, 2016 Share Posted April 13, 2016 Oh my..... oh my-my... memories, from the corners of my mind... Thank you for the 'walk' down memory lane. It has been some time since... Link to comment Share on other sites More sharing options...
drdarkfish Posted August 7, 2017 Share Posted August 7, 2017 (edited) *Wrong thread* Edited August 7, 2017 by drdarkfish wrong thread Link to comment Share on other sites More sharing options...
BrownieXYZ Posted August 8, 2018 Share Posted August 8, 2018 Interesting to think of the status of Turntables in 2008 when David posted this to the amazing comback here in 2018. Wish I had stocked up on some cheap classics back then lol Link to comment Share on other sites More sharing options...
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