I am about to order Brinkmann 12.1 for my Clearaudio Master Solution. Unfortunately, I have to organise a custom made tonearm base for the arm. I know where to have it machined, I just need to come up with a design.
Here’s a prototype (not in the correct angle), built highly professionaly with a pencil, a length of thread, a satay stick (unused), piece of cardboard, scissors and a short ruler with a picture of Snoopy
The drilling instructions for the arm base are in page 25-26 of the Brinkmann analogue manual:
What concerns me is the three M3 holes 120 degrees from each other. My understanding is that one attaches the mounting socked to those holes, and then the arm goes to the mounting socket. The arm can be rotated in the mounting socket and locked in place once exactly right. Therefore, the M3 holes are not critical relative to the direction to the arm as long as they are a correct distance from each other and from the hole to which the mounting socket is installed.
Is anybody here able to confirm that?