Imbalance wrote:Thought i might try this out, but i seem to get a bit disorientated with the inner and outergroove options, DIN, IEC, and Typical
This can be a little confusing, but it's a useful tweak. Basically the IEC option will optimise the arc/null points for 12" records with inner and outer grooves within normal limits. Older arms (usually Japanese) are often optimised for the DIN inner groove which results in an alignment optimised for the runout groove on most records... If in doubt I'd set to IEC as this means you can double check using another universal Baerwald /Stevenson protractor, such as the two-point versions on this site.
i only focused on the overhang before with either using Løfgren A or Stevensen, as both carts i use dont fit the Baerwald on a Rega arm, but as i get a shorter overhang that could be used with Baerwald and the DIN norm, i dunno what is correct now?
Unless you have an unusual stylus tip to mounting hole distance on your cartridge you should be able to align to Baerwald IEC null points - simply move the cartridge forward to follow the arc, then skew it in the headshell to match the grids (then recheck the arc).
However, Rega's standard alignment is closer to Stevenson IEC so printing an arc for this will place the cartridge close to centre of the slots for troublesome cartridges, and it should end up fairly square in the headshell.