Stevenson vs Baerwald Cartridge Alignment

What cartridge alignment means

Cartridge alignment sets where the stylus sits in relation to the record groove, and on a pivoting tonearm it is a compromise. Because the arm rotates around a single pivot, the stylus cannot stay perfectly tangent to the groove across the whole side. The difference between the ideal angle and the actual angle is called tracking error, and it changes as the arm moves from the outer grooves to the inner ones.

To manage that error, an alignment standard fixes two numbers: overhang, how far the stylus extends past the spindle when the arm points inward, and offset angle, the angle of the cartridge body relative to the arm tube. The combination creates a pair of null points, places on the record where the stylus is exactly tangent to the groove and tracking error is zero. Between and beyond the null points, some error remains, and different standards decide where to put that error.

If the basics of overhang and offset are unfamiliar, the tonearm geometry article covers them in more depth, and the tracking error article explains why the error exists in the first place.

Stevenson alignment

Stevenson alignment is named after the engineer who proposed it for broadcast use. The geometry pulls the inner null point close to the record's center, which concentrates the correction exactly where distortion is most audible. Most records end with long passages near the inner grooves, and the groove angle there is the hardest for a pivoting arm to track cleanly.

Because it addresses the area the ear notices first, Stevenson became a common factory default. Many turntables with pre-mounted cartridges arrive set to a Stevenson-style geometry, and the printed overhang gauge that ships in the box usually matches it.

• Inner null point sits near the final grooves on a side
• Low inner-groove distortion, at the cost of a little more error in the middle of the record
• Common factory setting on many turntables, especially direct-drive designs

Baerwald alignment

Baerwald alignment is named after the engineer who published the geometry decades ago. It places the two null points in the middle portion of the playing surface, spreading tracking error more evenly across the whole side. The result is lower average distortion, with a slightly higher error at the very inner grooves compared with Stevenson.

Baerwald is the standard most aftermarket protractors are printed for, and many hobbyists treat it as the audiophile default. If you set the cartridge yourself with a protractor, Baerwald is usually the target you will be aligning to.

Stevenson vs Baerwald: which is better for you

Choosing between the two is less about which is objectively correct and more about what you listen to and how the turntable is set up. When both are set accurately, the differences are subtle, and either standard will outperform a cartridge that is simply mounted by eye.

If the most demanding music on your records sits near the center, Stevenson's inner-groove correction helps. If you play many genres and pressings, Baerwald's even spread keeps the average error low. For a turntable that ships with a pre-mounted cartridge and a Stevenson gauge, sticking with that standard saves you from buying an aftermarket protractor. For a cartridge you are mounting yourself on an arm with a known geometry, Baerwald is the more commonly recommended setting.

The best practice is to align to the standard that matches your tonearm's documentation, or to the protractor you have. Switching from one to the other requires resetting both overhang and offset, so it is not a casual change. If you are unsure, Baerwald is the default for most aftermarket alignment tools.

How to switch between them

To move from Stevenson to Baerwald, you need a protractor that shows the null points for the target geometry. Most universal protractors have markings for both; some have separate arcs for each standard. You set overhang to the recommended distance for your arm, then rotate the cartridge in the headshell until the stylus sits on the null point lines at both outer and inner positions.

A two-point protractor is the practical tool for this. It shows two lines, one for the outer null point and one for the inner null point. You adjust the cartridge gently until the stylus aligns with both lines. The cartridge alignment protractor article walks through the process step by step, and how to align a turntable cartridge covers the full setup.

If your tonearm has a detachable headshell, you can do the alignment off the deck and then lock it back on. That makes it easier to see the markings, as long as you do not disturb the arm during installation.

What to pick for your use

Questions

Is Baerwald always better than Stevenson?

No. Both are correct when performed accurately. Baerwald gives lower average distortion, but Stevenson preserves the inner grooves better. The difference is small, and listeners who value inner-groove clarity may prefer Stevenson.

Can I switch my turntable from Stevenson to Baerwald?

Yes, if your tonearm allows enough adjustment. You need a protractor for the new standard and you must reset both overhang and offset. Some arms have a fixed overhang, so check the manufacturer's specifications before trying.

Does the cartridge brand affect which alignment to use?

Most modern cartridges are designed to work with standard alignment geometries. The cartridge itself does not dictate a standard, though some manufacturers include a specific protractor for their recommended geometry. Follow what your cartridge maker provides.

Why do some turntables ship with Stevenson alignment?

Stevenson is a common choice for pre-mounted cartridges because it is effective for typical listening and easier to set with a simple overhang gauge. It also keeps distortion lower on the inner grooves, where many records run their final tracks.

Do I need a protractor to align with either standard?

For Baerwald, a two-point protractor is the standard method. For Stevenson, a simple overhang gauge may be sufficient if your tonearm's pivot-to-spindle distance is fixed. A protractor that shows both standards gives you the most flexibility.