I bought a BEOCENTER 2000 stereo system (Made in Japan) with the intention of further developing my idea of replacing the B&O cartridge(s) with an Ortofon OM series cartridge. Compared to the MMC20, the OM series specifications (stylus pressure, compliance, etc.) and generator size are somewhat similar, so a replacement might be possible. And the generator can be removed from the plastic part of the OM cartridge by simply pressing.
I made a quick 3D model of the new cartridge holder (it does not have the exact offsets, angles etc):
This actually turned out to be looking quite ok.
BUT: this modification would be irreversible, so you would have to break or replace the whole original tonearm tube. And I had the (positive) problem that the cartridge and stylus that came with the system I bought turned out to be still in good condition, so I didn't feel like continuing with the cartridge replacement.
So this is more of an idea that someone else could continue with...
I made a quick 3D model of the new cartridge holder (it does not have the exact offsets, angles etc):
This actually turned out to be looking quite ok.
BUT: this modification would be irreversible, so you would have to break or replace the whole original tonearm tube. And I had the (positive) problem that the cartridge and stylus that came with the system I bought turned out to be still in good condition, so I didn't feel like continuing with the cartridge replacement.
So this is more of an idea that someone else could continue with...
I now further modified the 3D model with the specs which, according to my measurements, are suitable for this B&O tonearm:
Pivot to spindle distance: 210 mm
Tonearm effective length 227 mm
Overhang: 17 deg
Offset angle: 24 deg
Cartdrige vertical tilt: 20 deg
I have posted 3D print STL files to Thingverse, so the brave ones could try this themselves: https://www.thingiverse.com/thing:6927914
One version for the original 5.15 mm diameter tonearm tube and another for 6.0 mm aluminium tube you should be able to obtain from your local hardware store.
Pivot to spindle distance: 210 mm
Tonearm effective length 227 mm
Overhang: 17 deg
Offset angle: 24 deg
Cartdrige vertical tilt: 20 deg
I have posted 3D print STL files to Thingverse, so the brave ones could try this themselves: https://www.thingiverse.com/thing:6927914
One version for the original 5.15 mm diameter tonearm tube and another for 6.0 mm aluminium tube you should be able to obtain from your local hardware store.