Opus 3 Cantus parallel tracking arm - Page 52 - diyAudio
Go Back   Home > Forums > Source & Line > Analogue Source

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

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 4th July 2013, 08:40 PM   #511
diyAudio Member
 
Join Date: Aug 2003
Location: Calgary on the Bow
Bo's words on the Cantus arm


There is of course lot of different ways to make a tonearm. My goal for Cantus is in short: The cartridge tip shall read the information in the trac, on the same spot as it was cutted, This is not possible with a pivoted tonearm. The cartridge shall have a stable reference and not be able to "swing" i.e. there shalll not be a fundamental resonance in the system. This is not possible with a pivoted arm. To solve this there is two contact points, which makes the carriage, hold the cartridge to can move sideway but not get in resonance. There shall not be resonators coupled to the cartridge, such as the "organpipe" resonance that is common on most existing tonearms. I mean that when you have a tube almost one feet long coupled to the cartridge, the tube itself resonates on two feet and four feet tones approximately 300Hz and 600 Hz and overtones on this. By making the tonearmtubes very short, the resonace is forced up to higher frequencies, and by using a very small diameter on the tubes the resonance is reduced significantley. You can easely hear the tonearm resonance when you put down the cartridge in a quite trac on the record. When you compare the sound from Cantus with most of other tonearms you will find Cantus playing teh empty track, much quiter than other. There shall not be any other kind of energi storing in the system, flexible materials. All mechanical energi shall be converted to electric output from the cartridge. The vertical movement from the record, shall be damped. In Cantus it's solved by using ballbearing with a little sideway play. This means the contact point in the bearing is changed when the tonearm moves up and down. As the contact point is changed there is automaticly a damping, because it's not a resonant point. This is perhaps difficult to understand, so please give it some time and thoughts. The Cantus shall be possible to mount on most of recordplayers/turntables on the market, having a affordible price for musiclovers who is more intrested in the music than equipment, and be easy to repair if accidents appears. The tonearm tubes is made of hard nonmagnetic stainless steel. "Music shall swing - not tonearms" )! Sincerely Bo Hansson

Best regards Moray James.
__________________
moray james
  Reply With Quote
Old 6th July 2013, 03:11 PM   #512
Marra is offline Marra  United Kingdom
diyAudio Member
 
Join Date: Nov 2009
Location: Near Lincoln
Does someone have a link to the website I can't seem to find ittia.
  Reply With Quote
Old 6th July 2013, 03:22 PM   #513
secanbj is offline secanbj  Sweden
diyAudio Member
 
Join Date: Sep 2003
Location: Gothenburg
Here is the link

Continuo

Regards
Anders
  Reply With Quote
Old 6th July 2013, 03:30 PM   #514
Marra is offline Marra  United Kingdom
diyAudio Member
 
Join Date: Nov 2009
Location: Near Lincoln
Thank you Anders
  Reply With Quote
Old 11th July 2013, 12:44 AM   #515
diyAudio Member
 
Join Date: Dec 2006
Hi Nanook,
Good to see you involved with Opus 3 Continuo with Cantus tonearm. To make it clear, are you a distributor for the turntable and tonearm or just a consultant?
  Reply With Quote
Old 11th July 2013, 01:58 PM   #516
diyAudio Member
 
vdi_nenna's Avatar
 
Join Date: Oct 2000
Location: PA, USA
Blog Entries: 1
Send a message via Yahoo to vdi_nenna
Quote:
A lot of us have the Technics SL1200mk2 turntable
I have seen a Terminator tone arm on Technics LS1200.
__________________
I build, therefore I am.
  Reply With Quote
Old 14th July 2013, 08:42 PM   #517
Nanook is offline Nanook  Canada
diyAudio Member
 
Nanook's Avatar
 
Join Date: Feb 2004
Location: Chinook Country.Alberta
Default distributor or?

Quote:
Originally Posted by audiostar View Post
Hi Nanook,
Good to see you involved with Opus 3 Continuo with Cantus tonearm. To make it clear, are you a distributor for the turntable and tonearm or just a consultant?
audiostar and others: I had intended on trying a liscence for manufacturing of the tables here, and had started working on that until Bossse's untimely death. I have been working towards something "loose" with Haken (the current owner). I have made a plinth as per Bo's basic recipe (which I will not disclose as it was given in trust to me by Bo prior to his passing). Bo's basic concepts follow mine however, so it wasn't much of a stretch. I have a Continuo bearing courtesy of Moray (a buggered one apparently).and must fit it and add a motor. I have several DC candidates that meet or exceed the motor from the Continuo in terms of performance. I have several platters that I can use, but would prefer to use something similar to what the Continuo uses (aluminium, of not known mass.) which I do not have. I believe a reasonable platter should be used , one in the 3kg range (

The Cantus tonearm is, I think, quite nicely designed, and I have seen Moray's. However there are a few minor issues with it, most notably fit and finnish. The mechanical workings are fine, but the devil is in the details, and I think this is where Bo's arm has been ultimately let down. It should be mechanically smooth to operate, and should look the part as well. Regardless I do believe the Cantus and Continuo represent an incredible bargain. Haken has addressed some of the smaller details, but issues with a design for world-wide use is something that should be considered and as of this date (unless it has been and I am unaware of it) has not been. Good design and implementation need not cost more.
__________________
stew -"A sane man in an insane world appears insane."
  Reply With Quote
Old 15th July 2013, 08:21 PM   #518
diyAudio Member
 
Join Date: Dec 2006
Hi Nanook,
There are a lot of expensive high performing pivoted commercial tonearms out there. The Cantus tonearm is not expensive relatively speaking. Can the Cantus compete with those expensive tonearms? I look forward to your design
of the Opus 3 Continuo turntable with Cantus tonearm. Will this be out within a
year or will it take longer?
  Reply With Quote
Old 29th July 2013, 06:28 PM   #519
diyAudio Member
 
Join Date: Aug 2003
Location: Calgary on the Bow
I would suggest that it is the other way around, pivoted arms struggle to attempt to do what a mechanical linear tracking arm does. Pivoted arms are not capable of matching a linear arm they can never achieve zero tracking error. Best regards Moray James.
__________________
moray james
  Reply With Quote
Old 7th February 2014, 04:33 PM   #520
diyAudio Member
 
directdriver's Avatar
 
Join Date: Nov 2005
Default more Clearaudio clone

From the holgerbarske.com site?



Click the image to open in full size.

Click the image to open in full size.



And from the tag-produktdesign.de site

Click the image to open in full size.

Click the image to open in full size.

Click the image to open in full size.

Click the image to open in full size.

Click the image to open in full size.


.
  Reply With Quote

Reply


Hide 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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
The Ikea curtain rail air parallel tracking tonearm! ericpeters Analogue Source 175 22nd March 2014 03:30 PM
My take on TPA's Opus DAC orthoefer Digital Source 9 18th April 2008 02:51 PM
Opus Dei! mikeks Music 6 25th January 2005 11:37 PM
Parallel amps & Parallel Voice coils? officeboy Multi-Way 7 26th May 2004 08:12 PM


New To Site? Need Help?

All times are GMT. The time now is 03:56 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2