I heartily recommend that everyone make their own recordings in high fidelity. A nice tape machine and a good set of microphones are required. Find a nice-sounding venue and make a recording of something that you can stand to listen to over and over. Then have it mastered and pressed onto LP. A test is fine- you don't have to make a full run.
At least then you have a reference; you were there, you have the master tapes, you know what it sounds like.
Or you could use a mirror mounted on the item under test, a laser and a sound source to demonstrate how a separate arm pod will not vibrate the same as the plinth onto which the platter is mounted, even if both use the same construction techniques!
In the case of the first you have a subjective means to winnowing out how a separate arm pod is a failed concept; in the latter you have a means of measuring it.
I do agree with Halcro on one thing:
A plinth that has low mass can't also be rigid and dead (IOW damped with no ringing). In this it appears that Halcro has realized that some of what I've said is true- so my challenge to him is to go ahead and finish the job- build a plinth that has the weight and mass, that is 'dead' and provides a means of mounting the arm **directly** to it. So far what I've seen of his efforts appear artistically wonderful, but lack a bit of science. If you're going to go through all that work, why not try both principles? Of course the same construction techniques should be used so as to minimize variables, otherwise its apples and oranges!
At least then you have a reference; you were there, you have the master tapes, you know what it sounds like.
Or you could use a mirror mounted on the item under test, a laser and a sound source to demonstrate how a separate arm pod will not vibrate the same as the plinth onto which the platter is mounted, even if both use the same construction techniques!
In the case of the first you have a subjective means to winnowing out how a separate arm pod is a failed concept; in the latter you have a means of measuring it.
I do agree with Halcro on one thing:
What I DIDN'T appreciate at the time....was that the same principle of weight/mass applies to the TURNTABLE PLINTH 🥴
A plinth that has low mass can't also be rigid and dead (IOW damped with no ringing). In this it appears that Halcro has realized that some of what I've said is true- so my challenge to him is to go ahead and finish the job- build a plinth that has the weight and mass, that is 'dead' and provides a means of mounting the arm **directly** to it. So far what I've seen of his efforts appear artistically wonderful, but lack a bit of science. If you're going to go through all that work, why not try both principles? Of course the same construction techniques should be used so as to minimize variables, otherwise its apples and oranges!