The solution if you are stuck with sub-optimal pivot to spindle distance and do not have a Smartractor, is to measure as accurately as possible the pivot to spindle distance and generate a curve protractor with the measured pivot to spindle distance as align the tonearm with the generated...
One of the many reasons I like the Micro Seiki turntables and now the Air Force III is the arm mounting arrangement allows you two axis of rotation to get the stylus where it needs to be. The SME allows you some degree of freedom for adjustment which Peter mentions, but most other arms don't...
I can't stress the importance of getting the spindle to pivot distance correct especially with a curve protractor. The beauty of using the Smart tractor is that it can compensate for small errors in spindle to pivot distance which is impossible with a curve protractor. Unless you have a moveable...
What I do normally after I have set up my tone arm with the SmarTractor and I know the exact pivot to spindle distance, I generate a curve protractor and and compare the results. If anything, just to confirm nothing got bumped and moved after alignment. The SmartStylus is a great tool to get...
Hi jn229,
The best way I have found to check if you have the correct pivot point marked on the tone arm, as you have, is to use a protractor like a Feickert for example and place the pointer on the marked point, now rotate the arm and if the mark stays centered on the pointer you are on the...
jn229,
I beg to disagree, an arc style protractor only works if you have the exact pivot to spindle distance so if you can't measure the exact pivot to spindle distance or have you arm mounted in the exact position as required by the arc protractor it is useless. I find that I always get closer...
Yes David nailed it on that one, now I have a whole bunch of arms and protractors to get rid of.
I set the pivot to spindle distance at 295.6 mm and used a Sumiko slotted head shell , an Ortofon headshell (made by Jelco as well) will work just as well. I am not happy with the SME headshell...
A new toy
I also happened to obtain a SMARTstylus which is another useful tool made by Acoustical Systems.
Herr Brakemeier from Acoustical Systems is a genius when it comes to useful and accurate tools to align your cartridge.
I also regard this as a must have................you might wonder...
SmarTractor at work
Here as promised are some pics of the SmarTractor in use.
David Karmeli convinced me to try an SME 3012-R and I was so impressed with the arm's performance I bought a second one..........David is going to send me to the poorhouse!
Thanks David you were absolutely correct...
In fact I just read about the SmartStylus. It looks like a really useful tool. In fact I should order one tomorrow.
All the products from Acoustical Systems are innovative and cutting edge including prices but this is What's Best forum and the best usually costs more.:)
I have tried the head...
The SmatTractor's graduated disc works pretty well, the best I have seen. Also if the center of rotation of the arm is the same as the center of the mounting clamp/collar that can be used.
To find the center of the arm mounting hole
http://www.mathopenref.com/constcirclecenter2.html
This is...
Peter
I have been with Pass for two years, best job I have had ever.
We at Pass use Technics SP-10 Mk2's with custom plinths, platter and power supply. I also use a Micro Seiki RX-1500 with a custom stainless steel platter and a Feickert Woodpecker.
I will report as soon as I have a SME...
John,
I am partial to the Lofgren B IEC alignment When I have more time I will try the UNI-DIN alignment, though I find the differences are smaller with longer arms.
I also have had good results with Baerwald (Lofgren A) alignment.
Peter,
I am still waiting for an SME 3012R as David has...
Hi John,
It is a little expensive but well worth it......gave away all my other jigs. It also accomadates tall arms like the Kuzma
Jam
http://www.arche-headshell.de/smartractor-p-a-s/a-comparison-of-phono-alignment-protractors-for-cartridge-alignment-by-gecom-technologie-gmbh/
This is the most accurate, by far, protractor I have used
http://www.theaudiobeat.com/blog/smartractor.htm
It is distributed by Vanna Ltd. the importer of Audio Physic.
Thinking about the American Sound keeps me awake at night.................
David has raised a few great point as to what constitutes a good turntable
1) You need a massive platter..... inertia for speed stability
2) The mass of the plinth is important and has to be as small as possible...
Hi Bob,
I can arrange for one to be sent to David if he so wishes...
I have the little guy guarding my setup, but we digress since this is a thread about American Sound. Maybe a thread for turntable ornaments is in order..............:D
Jam
David,
Thanks for the photos I am a big Micro Seiki fan but alas I only have a RX-1500....one day when I grow up.
Rumor has it , you own an American Sound turntable pray tell... I suppose it is a story for another thread.
Jam