Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Analogue Source Turntables, Tonearms, Cartridges, Phono Stages, Tuners, Tape Recorders, etc.

Souther Linear Tonearm on A TD-124
Souther Linear Tonearm on A TD-124
Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 10th February 2016, 02:27 PM   #21
niffy is offline niffy  England
diyAudio Member
 
Join Date: Nov 2013
Location: Brighton
Quote:
Originally Posted by kevinkr View Post

In the case of record eccentricities I can very occasionally hear noise that is clearly from the bearings on silent passages. On the lead out where velocities are high it is pronounced.

I am going to look for replacement bearings and have contacted Clear Audio's U.S. distributor about replacement bearings amongst other things. (Should that not work out there are a number of flanged bearings available, one of them ought to work.)
Hi Kevin.

Like Bill I am using a diy linear tracker though of a very different design. I don't think either of us will ever be going back to a pivoted design. Although I have not heard the souther I've seen many more good reports than bad. A great couple of arms you've scored.

It is possible that the noise that you are hearing on the lead out groove is not actually the bearing. When the cutting lathe cuts the lead out the feed screw that moves the cutting head is run at high speed. This produces more noise than during normal cutting. Some of this noise is inevitably transferred to the cutting head. What you may be hearing is this noise that is cut into the lead out groove. If the resolution of the souther is greater than your previous arm it would explain why you have not heard it before. You will notice that the lead out of some records are quieter than others and that the timbre of the noise is different. Different cutting lathes. The lathes also fast advance between tracks to give the visible spaces for queuing.

If you're looking for good bearings I would recommend silicon nitride hybrid. I've experimented with a couple of different bearings and these seem to be the lowest friction and best sounding. I bought mine from Boca, they're not the cheapest but are of exemplary quality.

Hope this helps.

Niffy
  Reply With Quote
Old 10th February 2016, 05:25 PM   #22
niffy is offline niffy  England
diyAudio Member
 
Join Date: Nov 2013
Location: Brighton
Default Cartridge choice

One bit I forgot....

Ortofon Cadenza all the way. If you want accuracy and neutrality you won't find anything to compete at anywhere near the price. If you want a cuddly romanticize version of your music then they're not for you. If you want what's actually in the groove.... The higher up the range the better they get. The bronze is probably the pinnacle of value for money but the black is better, probably the best I've ever heard.

Niffy
  Reply With Quote
Old 10th February 2016, 06:16 PM   #23
kevinkr is offline kevinkr  United States
diyAudio Moderator
 
kevinkr's Avatar
 
Join Date: Sep 2004
Location: Boston, Massachusetts
Souther Linear Tonearm on A TD-124
I have a Schick and SPU A95 on the other table for comparison and the sorts of noises I am reporting are not audible - otherwise there is not a lot of difference performance wise except that the Schick/SPU cost me over $5K and the Tri-Quartz and Benz cost me nothing.

Playback with the Schick/A95 has a substantially lower noise floor, and offers at least as good resolution if not the quite presence and imaging of the Souther. It's a more restrained and differently tonally colored presentation than the Souther/Benz combination.

I like many things the Souther does better, but it is clearly much noisier, in some cases unacceptably noisier - it is not unlikely that part of this is the result of decades of wear and tear on this arm, tracks and bearings are nowhere as nice as the ones on the unused SLA-3. It may in fact turn out to be a lost cause, but has served its purpose to whet my appetite.

I'm a resolution freak and a fan of Ortofon LOMC cartridges and am very familiar with the SPU line, the Windfeld and Cadenza product lines so my inclination is to go for a Cadenza for the SLA-3. I am less sure now than I was about "upgrading" the other 124, however everything is reversible so I will see what comes of it when the other bits and pieces get here. I could even just put the SLA-3 on the current table, everything would bolt right on.
__________________
"To argue with a person who has renounced the use of reason is like administering medicine to the dead." - Thomas Paine
  Reply With Quote
Old 13th February 2016, 10:50 PM   #24
kevinkr is offline kevinkr  United States
diyAudio Moderator
 
kevinkr's Avatar
 
Join Date: Sep 2004
Location: Boston, Massachusetts
Souther Linear Tonearm on A TD-124
Snapped a few pictures of the bearings used which I will share here..

The dimensions I measured are as follows, and I was careful, but as always I might be off a few mils.

The race excluding flange has an O.D. of 0.250"
With Flange 0.296"
The race outer race is 0.110"wide
The inner race is 0.140" wide
The I.D. of the inner race is 0.1245"

These are flanged bearings obviously.

There is a significant difference between the performance of these bearings and the ones on the unused SLA-3. The Quartz rods are scrupulously clean now and get a regular wipe down with distilled water on a swab. The bearings have received the same treatment on a regular basis as well and while it has helped I still believe that new bearings would be a worthwhile investment.

I will also confess to doing something that is completely not recommended, but given the condition of this arm it is a complete don't care as far as I am concerned. I applied an absolutely minute quantity of telfon containing silicone oil to the exterior of the inner race right at the dust shield, and this seems to have quieted the bearings down slightly without a discernible increase in bearing drag - seems the reverse from unscientific experiment performed. Souther recommended washing these bearings in detergent and water and I can't help but wonder if there is not some internal corrosion as a result and don't know what sort of water they were washed in or whether they were baked. I would use only distilled water and detergent for cleaning, tap water I would think might leave deposits behind and this is something else that could have happened. My strategy is just a strategic wipe on the outer race surfaces.
Attached Images
File Type: jpg bearing 2.jpg (139.9 KB, 134 views)
File Type: jpg bearing 1.jpg (131.1 KB, 128 views)
File Type: jpg bearing 3.jpg (70.2 KB, 127 views)
__________________
"To argue with a person who has renounced the use of reason is like administering medicine to the dead." - Thomas Paine
  Reply With Quote
Old 13th February 2016, 11:14 PM   #25
kevinkr is offline kevinkr  United States
diyAudio Moderator
 
kevinkr's Avatar
 
Join Date: Sep 2004
Location: Boston, Massachusetts
Souther Linear Tonearm on A TD-124
Was looking at whether or not I could install the SLA-3 on the other table without removing the Schick. It appears to be possible if I position the arm in the vertical position while the Schick is in use, but it still seems like a better idea to just move it to the 401 when the new plinth gets here.

I also need to get one of the Tri-Quartz upgrades if there is any possibility as the profile of the height adjuster/support at spindle end is incorrect for a flat spindle top.

If I use the other option or supporting the arm I can ignore this issue.
Attached Images
File Type: jpg spindle support.jpg (236.2 KB, 129 views)
__________________
"To argue with a person who has renounced the use of reason is like administering medicine to the dead." - Thomas Paine
  Reply With Quote
Old 14th February 2016, 06:55 AM   #26
Straight Tracker is offline Straight Tracker  United States
diyAudio Member
 
Join Date: Nov 2010
Location: Prescott, Arizona
Default Bearings

Quote:
Originally Posted by kevinkr View Post
Snapped a few pictures of the bearings used which I will share here..

The dimensions I measured are as follows, and I was careful, but as always I might be off a few mils.

The race excluding flange has an O.D. of 0.250"
With Flange 0.296"
The race outer race is 0.110"wide
The inner race is 0.140" wide
The I.D. of the inner race is 0.1245"
Hi Kevin,

Attached, please find drawings and specifications for the above bearing.
They are available from McMaster-Carr for around $ 7 to 8.

Sincerely,

Ralf
  Reply With Quote
Old 14th February 2016, 05:35 PM   #27
kevinkr is offline kevinkr  United States
diyAudio Moderator
 
kevinkr's Avatar
 
Join Date: Sep 2004
Location: Boston, Massachusetts
Souther Linear Tonearm on A TD-124
Hi Ralf,
Thanks for the help! I will check these out.

Edit: I just ordered a half dozen which is one set for the Tri-Quartz and a set of spares. Lubricating the old bearings made for a marked improvement in their performance so my suspicion is that the previous owner washed the lube out of these bearings. I'll hold on to the originals.
__________________
"To argue with a person who has renounced the use of reason is like administering medicine to the dead." - Thomas Paine
  Reply With Quote
Old 15th February 2016, 01:27 AM   #28
kevinkr is offline kevinkr  United States
diyAudio Moderator
 
kevinkr's Avatar
 
Join Date: Sep 2004
Location: Boston, Massachusetts
Souther Linear Tonearm on A TD-124
Ordered two sets today, should have them in a few days.
__________________
"To argue with a person who has renounced the use of reason is like administering medicine to the dead." - Thomas Paine
  Reply With Quote
Old 15th February 2016, 02:22 AM   #29
super10018 is online now super10018  United States
diyAudio Member
 
Join Date: May 2010
The bearings you ordered from McMaster-Carr are oil filled which are not desirable. You should clean them once you got. The bearings should be dry bearings. You may also try to use professional double side tape from Home Depot to warp around both ends of the glass rods to reduce noise. I would suggest to cover the glass rod as much as you can. If I were you, I would change the wand from metal one to carbon fiber one to reduce the noise. However, if you reach that point, you are almost going to completely change the tonearm. Personally, I don't like the construction to begin with.
  Reply With Quote
Old 15th February 2016, 02:27 AM   #30
kevinkr is offline kevinkr  United States
diyAudio Moderator
 
kevinkr's Avatar
 
Join Date: Sep 2004
Location: Boston, Massachusetts
Souther Linear Tonearm on A TD-124
I plan to experiment with the bearings so doing as you suggest is viable. I can always put the old ones back in, they are satisfactory after obsessive cleaning.

Damping the end of the rods is an interesting idea which I can experiment with.

I can make arm wands here and was already considering the idea. I have 4 currently.

It's a pretty fiddly arm to set up, and some caution is required in use, but it does sound pretty good. Perhaps not ideal in some respects, but far better than you probably suspect. Have you heard one that is working properly? I was more than a little surprised.
__________________
"To argue with a person who has renounced the use of reason is like administering medicine to the dead." - Thomas Paine
  Reply With Quote

Reply


Souther Linear Tonearm on A TD-124Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Thorens TD-124 Speed breadhead Analogue Source 0 31st March 2015 03:41 AM
TD 124 buzzing dbxdx5 Analogue Source 15 14th June 2014 10:07 PM
Thorens TD 124 Bell47G Analogue Source 1 25th November 2013 07:06 PM
Thorens TD 124 vyju Analogue Source 2 14th June 2012 01:38 AM
Thorens TD-124 newbie neil_kaye Analogue Source 6 17th March 2008 03:44 AM


New To Site? Need Help?

All times are GMT. The time now is 08:57 PM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.00%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright ©1999-2017 diyAudio
Wiki