Cartridge Alignment Tools for 10 Inch Records

Cartridge Alignment Tool for 10 Inch Records

Reduce average tracing error by 36 percent!

Collectors of 10 Inch EPs and 78 RPM records will want to set up their rigs to play their music with the most accurate playback possible, while doing the least damage to their collection.  Converting a 9 inch tonearm with a 12 inch Baerwald alignment setup to play 10 inch records would involve moving the cartridge back in the headshell by a distance of 0.129 inches for a new effective length of 8.871 inches, and also twisting the cartridge outwards from an offset angle of 24.128 degrees to 21.685 degrees. This would reduce the overhang length by 18 percent, from 0.715 to 0.587 inches. Average angular error is reduced from 0.731 degrees to 0.468 degrees, or about 36 percent. Maximum angular error at the end of the playing band comes down from 1.312 degrees to 0.547 – a reduction of 58 percent..If you’re not crazy enough to have a separate turntable for your 78s and EPs, then you should consider running a separate headshell and cartridge with a 10 inch alignment setup.  There should be enough travel in a standard interchangeable headshell to accommodate the difference in cartridge position without having to re-mount the tonearm.  But if you do want to re-mount the tonearm to maximize effective length, have a look at our Tonearm Mounting Data Charts.This chart should illustrate the reduction in angular error achieved from customizing your playback system for 10 inch records.

Angular Errors on 10 Inch Records, 10 Inch and 12 Inch Baerwald Setups
Angular Errors on 10 Inch Records, 10 Inch and 12 Inch Baerwald Setups

Also, our 10 inch alignment tools available in Baerwald and Löfgren-B geometries.  Here are some numbers to help you choose between them:

10 Inch Setup Baerwald 10 Inch Setup Löfgren-B
10 Inch Record Mean Average Angular Error 0.46805864 deg 0.41474634 deg
10 Inch Record RMS Average Angular Error 0.53009837 deg 0.49469743 deg
10 Inch Record Max Error at Playing Band Start 1.07693572 deg 1.22387468 deg
10 Inch Record Max Error at Playing Band Middle 0.71419281 deg 0.49798389 deg
10 Inch Record Max Error at Playing Band End 0.54652712 deg 0.85436690 deg

This chart of angular errors across the playing band of a 10 inch record should also shed some light on the difference between Baerwald and Löfgren-B setup models.  The Löfgren-B model provides a lower average angular error, and lower error in the middle of the playing band, at the cost of greater maximum errors at the beginning and end of the playing band.  The Baerwald model provides the lowest maximum error.

Angular Errors on 10 Inch Records, Baerwald and Löfgren-B Setups
Angular Errors on 10 Inch Records, Baerwald and Löfgren-B Setups

Alignment tools for 10 inch records are in stock and ready to ship.  Within each geometry model, there are two versions: Standard Spindle Hole, for most turntables.  Its spindle hole has a diameter of .282 inches.  The Oversized Spindle Hole version has a spindle hole diameter of .288 inches, and is necessary for a few brands of turntable: Empire, Thorens, VPI, Systemdek, Luxman and Well Tempered.

10 Inch Alignment Tools – Baerwald Geometry

Phono Cartridge Alignment Tool for 10 Inch Records – Baerwald Geometry

Spindle Size




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10 Inch Alignment Tools – Löfgren-B Geometry

Phono Cartridge Alignment Tool for 10 Inch Records – Löfgren-B Geometry

Spindle Size




Shopping Cart Supports Paypal, Visa, MasterCard, American Express and Mail-In Orders