mm. THE REGA BAERWALD ARC PROTRACTOR download this protractor at: designed by seb donate to his paypal account. Free Protractor To Align Your Turntable Cartridge! Baerwald, Stevenson, and others came along later, and each published alignment geometry equations. I did my best with the included protractor to align the cart properly, but the Technics doesn’t quite use a Baerwald alignment. I wound up with.

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Aligning cartridge using Baerwald protractor

Home is where my turntable is and everyone should have a two point protractor. Prottractor trick is to have the cartridge mounted so that the needle aligns perfectly on BOTH dots without moving the protractor. What you may need to do is mount the cartridge a bit loose and slightly move it forward or back and see how it aligns on both points. You know you have it perfect when both points are perfect without moving the protractor.

It takes time and patience to get it just right, but the results pgotractor worth it! As always, if you have any questions please feel free to e-mail them to me.

Click here for cartridge alignment tool. Click here to view the two point protractor in action. Y ou’ll find an Excel file at the link located below this article.

This weighted curve bawrwald more emphasis on tracking error for inner grooves than for outer grooves, which is representative of the actual distortion caused by tracking error. Okay, so how does the spreadsheet work? The calculator has three yellow input cells and six green output cells.


Free Turntable Cartridge Alignment Protractor And Speed Discs

Inputs are effective length, innermost groove, and outermost groove. Outputs are angular offset, linear offset, stylus overhang, pivot-to-spindle mounting distance, inner null-point, and baerwsld null-point. The default or initial input values are The output values change in accordance with the equations listed in the instruction area below the graph when prltractor numbers are entered into any of the yellow input cells.

The graph is a visual representation of the columns of numbers on the left, which are a function of three specific tonearm parameters, effective length, angular offset, and stylus overhang as displayed in the tan colored cells, A3, B3, and C3.

These are also spreadsheet input cells, but initially they are linked to the corresponding calculator cells, I3, O3, and Q3 so the calculator controls the entire spreadsheet. However, the tan colored cells may easily be unlinked from the calculator simply by entering numbers into them.

If this is done, the calculator operates autonomously from the rest of the spreadsheet. The baerwalv and the rest of the spreadsheet are controlled by inputs to cells A3, B3, and C3 only. One reason for unlinking the calculator might be to evaluate a tonearm’s geometry by inputting effective length, angular offset, and stylus overhang protracfor into cells Bafrwald, B3, and C3, respectively.

For advanced spreadsheet users, the Excel “Solver” function is a very powerful tool that can be used advantageously with this spreadsheet.


For example, suppose you wish to evaluate Steven Rochlin’s alignment tool, which has alignment null-points at approximately 70mm and mm. You could ask “Solver” to find new innermost and outermost groove radii that would yield Steven’s alignment baerwqld, and you would also get a graphical representation of Steven’s tracking error and distortion curves.

There are many ways “Solver” can be used to enhance and expand the capabilities of complex spreadsheets. As a word of caution, only six cells on the spreadsheet should be used for entering numbers.

They are the three yellow cells, I3, J3, and K3 in the calculator at vaerwald top of each page, and the three tan cells, A3, B3, and C3, which control the graph and the rest of the spreadsheet. Please do not enter numbers into any other cells; otherwise you may destroy important equations that enable the spreadsheet to function properly.

As an additional precaution, I recommend you archive a copy of the spreadsheet and always use a different working copy, just in case something goes wrong and you want to return to the original. Other than that, have fun calculating.

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