I re-purposed an existing hole when I changed from a 9" arm (hole I re-purposed), to a 12.5" arm.
I made a plug, and left the plug recessed a bit below the armboard surface, so it fit a nice metal 45 adapter, looked like a factory designed recess..
Selecting Between Vintage Denon and Microseiki Tonearms
As I work through the build on the DP 80 project, I know the Dynavector DV505 tonearm is going on that table. That means I need one more arm for the DP75 on the DK110 plinth. My preference it to keep the factory armboard and retain as much as the vintage vibe as I can. This will be my casual table.
While I cannot confirm it, I imagine this armboard is drilled for a Denon tonearm. I have roughed the measurements out, but cannot know for certain until the Dynavector is pulled off it.
In doing a bit of research, there are a handful of Denon arms that are worth exploring. But it looks like the Microseiki arms use the same mounting distance, and I could use one of them.
For Denon I have the choices of DA 307, 309, and 401. I will use medium compliance moving coil cartridges.
With Microseiki I have seen the MA505, 705, 303, and 707 available at various price points.
Anyone have insights on which arms are preferable? I am afraid i do not have a lot of experience with these generations of vintage arms. .