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RE: Technics 1200 tonearm

Posted by flood2 (A) on June 22, 2017 at 18:37:01

In Reply to: Technics 1200 tonearm posted by Gera on June 22, 2017 at 13:13:36:

Hi
The arm itself is already a good design with a suitable effective mass for matching to most cartridges on the market today and it doesn't disgrace itself with what I consider to be moderately expensive cartridges - the most expensive cartridges I use with mine are a Denon DL304 and AT33PTGII just to give you an idea of price range.

You will find that the arm has far less effect on the sound quality compared to ensuring accurate alignment for horizontal tracking error and arm height as well as accurately setting antiskate and VTF. I presume you are using the stock Supermat? The correct arm height to set is between 2.25 and 2.4. It depends on what the "0" setting is so you will need to fine tune by ear.

The Cardas wire upgrade is already an improvement. However, the new ultra flexible wire is better still - the main advantage is that the flexibility avoids "wire bias" which the stiffer teflon insulation suffers from to a degree that you will notice that at zero VTF, the wire tension is sufficient to "pull" the arm to a specific position in the middle of the record. When you are the outer edge, it slowly drifts inwards, at the innermost radius it slowly drifts outwards.
This may not be a problem with your arm, but the ultraflex wire solves that if you do.
If I might suggest that one improvement you could make - swap the Concorde body and get a cheap OM3/5 body or even Omega (they are the same) and put your Sty20 on that. Now you can optimise the geometry properly using an arc protractor or (better still) a Linear Offset jig.
I hate to cause any panic over arm tolerances, but the Technics arms actually vary in length and pivot location giving up to 0.5mm error in overhang and a corresponding error in offset. The Concorde body gives you no option to correct this. Going back to a traditional mount cartridge on a Jelco HS25 headshell (which allows to adjust azimuth) will give you a much more accurate alignment which is far "cheaper" than buying a new arm and new arm mounting plate.
Regards Anthony

"Beauty is Truth, Truth Beauty.." Keats

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