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Old 18th March 2006, 12:36 PM   #21
fergs1 is offline fergs1  Australia
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Location: melbourne
greetings Carlo, in Australia neo rods are cheaper than alnico, is there any reason why you should not use neodenium rods in your design cheers fergs
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Old 20th March 2006, 07:20 PM   #22
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Default neo rods

Dear Fergs 1,
in Australia neo rods cheaper than Alnico ?
I should move from Italy to live in Australia !
Best regards,Carlo
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Old 22nd March 2006, 02:11 AM   #23
Eggzy is offline Eggzy  United Kingdom
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Unhappy WHY NOT A COMPASS?????

Has anybody thought of using a bar magnet and it's propensity to point north [or south] a bar magnet could easily be set up in this way via, say tiny silk cords...or has this already been thought of before
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Old 22nd March 2006, 12:13 PM   #24
fergs1 is offline fergs1  Australia
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greetings Carlo, as a funtion of performance what is more important ,the correct bias or correct tracking anglle, I know obviosly both would be desirable but if you are stuck with 9in arms because of high compliance carts how important is tracking angle. by the way the weather in melbourne is superb so get your passport up to date and come on over

cheers fergs
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Old 23rd March 2006, 10:25 PM   #25
Eggzy is offline Eggzy  United Kingdom
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Lightbulb RADICAL NEW ANTI-SKATING METHOD

....OR AN OLD CHESTNUT?

THE ANTI-SKATE MECHANISM IS NOW PHYSICALLY LIBERATED FROM THE TURNTABLE BODY

on a virtually frictionless unipivot it could be a very elegant solution
Because the bar-magnet can be rotated-thus you don't have to orientate your turntable magnetic-north or anything daft like that


comments?
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Old 24th March 2006, 01:12 PM   #26
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Default compass antiskating

To Eggzy:
The earth magnatic field is not enough strong,then to adjust the antiskating you have to turn the whole turntable looking at the compass.
It seems to me not pratical.
Best regards,
Carlo

To Fergs 1,
here in Italy the weather is foggy,or rainy,everything is grey.
Unluckily here I have a lot of problems to resolve,I can not leave
now.
Best regards,
Carlo
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Old 25th March 2006, 02:13 AM   #27
Eggzy is offline Eggzy  United Kingdom
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Lightbulb Morsiani

Morsiani,
you said:

"then to adjust the antiskating you have to turn the whole turntable looking at the compass"


...no you would simply rotate the bar magnet 'X' amount of degrees clockwise of north [see amended drawing]


also you say:

"The earth magnatic field is not enough strong"


Maybe a big enough Neo magnet would do it

Eric
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Old 26th October 2006, 01:19 AM   #28
marekst is offline marekst  Poland
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Dear Carlo Morsiani,
You saved my sanity!
Two years ego I switched from CDs to vinyl. I needed a better source to compliment my DIY speakers. When setting my first audiophile TT I found out that antiskate adjustment was not working. When I complained I was scalded by vinyl gurus and told to be happy. That really ticked me off. I tried a different arm with a different antiskate system still no luck. I decided to build my own TT and tonearms. I build two Schroeder clones and still had a problem with antiskate. This time I could not blame the manufacturer! I did some thinking and came to a conclusion that all three designers are wrong. All 3 tonearms had antiskate designed to increase the force toward the center off LP.
I found your posts on the subject today and a link to your website. Eureka! Finally someone who shares my views! You made me very happy. Thank you!
It felt like there was a conspiracy to make me think I was nuts since I was the only one who would not accept tonearms with bad antiskate design.
I have some ideas how to fix my Schroeder clones for correct antiskate operation. I will share when ready.
Marek Stojek
http://gallery.audioasylum.com/cgi/v...erImages=21150
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Old 26th October 2006, 08:03 AM   #29
AndrewT is offline AndrewT  Scotland
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Hi,
I have a old SME 3009 S2 imp.

It allows one to set up the amount of antiskate and whether it increases or decreases as the arm sweeps across the disc.
It cannot adjust by very much and if the curve of the skating force is at the asymtote then the force is substantially constant across much of the disc.

So never let it be said that the British manufacturers don't allow flexibility in their set-up/design.
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Old 26th October 2006, 12:24 PM   #30
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Dear Marek Strojek,
thank you for your news.
I am am always very glad to receive confirmations about my design.
I have some news .
I suggested the uncutted disc for antiskating adjustment.
This is very useful to test bearings friction and wiring friction.
But the best method for antiskating adjustment is to have a test disc with fixed 1 khz frequency on the two channels,and a dual trace oscilloscope is necessary.
The problem is that the only one commercially aivable test disc has a very short track for antiskating test,instead ,accordingly to my method,the test signal should be cutted continuously in all the side surfaceof the vinyl disc.
Such test disc are not longer commercially aivable,but I had this cutted for me on a PVC disc,not a laquer,this lathe cutted PVC disc is usable many times exacly as a pressed discs.
Here in Italy,in Bologna , 60 km away fom my house,there is Mr Roberto Barbolini ,see www.vinycuttingheadrepair.com .
He repairs Neumann cutting heads,and he has a complete cutting
lathe,I had cutted some vinyls from my analog tapes,and a test disc for antiskating adjstment at reasonable price, and with very high sound quality,because the Neumann cutting heads employed are completely refurbished with new flat wire coils and new diamond.
He cuts vinys for customers, it was an exciting experience to assist vinyl cutting ,I had cutted a 78 RPM disc for demonstration purpose from an old open reel.
Old tapes can not be played too much times,the only way to preserve their content is to make digital dubbing or.....
cutting a vinyl !
This method has the advantage to preserve the analog original sound without digitalizing it .
Best regards,Carlo Morsiani.
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