Pro-Ject Debut overhang at the published 200 mm pivot.
Pro-Ject's Align it PRO sheet states that 8.6 inch Pro-Ject arms use a pivot-to-spindle distance of 200 mm. The Debut Carbon EVO manual prints an effective length of 218.5 mm and a factory overhang of 18.5 mm. 200 plus 18.5 is 218.5. Pro-Ject also says that 18.5 mm factory alignment is not the Baerwald curve. The table is Baerwald, Lofgren B, and Stevenson for 200 mm. The same Pro-Ject sheet lists 212 mm, 238 mm, and 291.6 mm for the longer arms; type one of those if your deck is not the 8.6 inch Debut arm.
Published mounting distance: 200 mm.
Pro-Ject prints 200 mm as the pivot-to-spindle distance of its 8.6 inch tonearms.
Factory overhang published for the Debut Carbon EVO is 18.5 mm, with 218.5 mm effective length. Pro-Ject's Align it PRO note says this factory alignment is not Baerwald. An offset angle is not printed on the Debut Carbon EVO specification page cited here, so this page does not invent one.
- Pivot to spindle
- 200.0 mm
- Effective length
- 218.5 mm
- Factory overhang
- 18.5 mm
Baerwald, Lofgren B, and Stevenson.
The studio clamps this distance to 150 mm through 400 mm. Null radii stay on the IEC groove. Overhang, offset, and effective length follow the distance.
| Curve | Overhang | Offset | Inner null | Outer null | Effective length |
|---|---|---|---|---|---|
| Baerwald (IEC) | 19.04 mm | 25.25 deg | 66.00 mm | 120.89 mm | 219.04 mm |
| Lofgren B | 19.44 mm | 25.13 deg | 70.16 mm | 116.19 mm | 219.44 mm |
| Stevenson | 16.99 mm | 24.18 deg | 60.33 mm | 117.42 mm | 216.99 mm |
Sources
Questions about this arm
Where does 200 mm come from?
Pro-Ject's Align it PRO sheet states 200 mm as the pivot-to-spindle distance used on Pro-Ject 8.6 inch tonearms. The Debut Carbon EVO manual prints an effective length of 218.5 mm and a factory overhang of 18.5 mm. 200 plus 18.5 is 218.5. The same sheet lists other Pro-Ject arms at 212 mm (9 inch), 238 mm (10 inch), and 291.6 mm (12 inch). This page defaults to the Debut 8.6 inch arm. Enter another published distance if that is the arm you own.
Why is the factory overhang 18.5 mm while Baerwald is different?
Pro-Ject says the Debut Carbon EVO leaves the factory at 18.5 mm overhang, and that this factory alignment is not the Baerwald method. The Align it PRO sheet says a fresh deck will not match its Baerwald protractor for that reason. The table on this page is Baerwald, Lofgren B, and Stevenson for a 200 mm pivot. 18.5 mm stays in the factory row, separate from that table.
Will the null radii move if I type a different pivot distance?
No. Null radii come from the IEC 60098 inner groove at 60.325 mm and the outer groove at 146.05 mm, which are the radii StrobeHz uses. With those radii the table reads 66.00 mm and 120.89 mm for Baerwald, 70.16 mm and 116.19 mm for Lofgren B, and 60.33 mm and 117.42 mm for Stevenson. Overhang, effective length, and offset angle are the quantities that move when the pivot distance changes.