Multiple arms, multiple cartridges and geometry?


I have read the debates regarding the benefits of different tonearm geometries......Lofgren A and B, Baerwald, Stevenson etc....and I appreciate the benefits of choosing where, on the vinyl record, one wishes to have the least spread of distortion.
I also have read where certain arms seem to perform better with one or other of these geometries?

I have two turntables with three different arms on each one and I have a total of over twenty five different cartridges.
Four of those arms have removable headshells and twenty of my cartridges are mounted on their own headshells ready for installation into any of those four tonearms.
How then.......can I have different geometries for each arm if I don't wish to re-align a cartridge within its headshell depending on the arm in which its installed?
Surely......I must select a single geometry for all my arms so that the cartridges fixed to their headshells....are truly interchangeable?
128x128halcro
SO the big question...how does it all sound? How do you choose which setup to use when playing a record? Was it all worth it?
Dear Halcro: Why not align all the removable headshell tonearm designs at 225-227mm according Löfgren A or B calculations?

You could try that: same tonearm effective length, this means same overhang and same offset angle with different tonearm spindle to tonearm bearing mount distance.

Regards and enjoy the music,
R.
Great efforts Halcro and I appreciate your sharing the experience with us. But I
can't fathom the sheer number of choices you have each time you sit down to
relax and listen to music. I sometimes have trouble just deciding which LP to
pull out. How do you do it?
Dear Raul,
Why not align all tonearm designs at 225-227mm?
THE REASON
It ain't a pretty sight huh??.....and most arms should sound their best at their Manufacturers recommended specifications?
But apart from all that......I would then not be able to use cartridges with fixed headshells such as the FR-7f and the Technics EPC100Mk3?

Regards
H
Good questions Mapman and Peter......
In one way I agree with both of you. There really are too many choices BEFORE I even choose a record to play?!

On the other hand......for 30 years.....I listened to one turntable with one arm and one cartridge (although that cartridge might change every 2-3 years?).
And yes....it was very enjoyable.
But each time a new cartridge was inserted.....a different perspective was given to all my cherished records. Sometimes....this different perspective seemed a step backwards....or at least....gave less satisfaction?
Only when a new cartridge gave a keener insight into the listening experience.....did it stay for the course.
But the sheer fact that every cartridge DID sound differently should have raised some important questions.......is there a 'correct' sound to a cartridge?......ie-the ABSOLUTE sound?
The answer of course...as we all know....is NO.
That is why we all have different systems with different sounds....and I won't venture into the preferences for valves vs solid state, belt-drive vs DD, MCs vs MM, planars vs horns vs dynamic vs sealed vs ported??

If every cartridge offers a different perspective....and every arm and turntable likewise......aren't there some benefits to being able to instantly sample those perspectives on a daily basis?

And that's precisely what I do!
Sometimes I'm entranced with the sound of a particular cartridge on a particular arm I'm using....and will listen to records for day after day until suddenly.........I will hear something on a track that triggers a desire for a 'different' perspective?
This may entail the 'radical' shift to my other turntable with a totally different arm and cartridge 'type'?

Most audiophiles don't use 'tone-controls' or equalisers and need to change a component or cable to effect a change in sound to their set-up?
Imagine being able to do that every hour of the day...every day of the week?

Yes...my choices are now vast compared to most audiophiles....but the increase in my knowledge and listening experiences allows for a greater appreciation of the variations and diversities which make up this intriguing hobby?
Anyway....that's my story and I'm sticking to it?! :-)

Cheers
Henry