I'll jump in to comment only on an experience with air-borne interference with my turntable.
My listening room has a 5' wide alcove along one sidewall. Within that I constructed two full width shelves to place source components. This accommodates freestanding record storage boxes underneath.
Initially I placed my turntable at the far right end of the top shelf. Unconsidered at first was the result of the arm/cartridge being very near a corner as it's arc traced a record. One day I had reason to lean over the platter area while music was playing. I was startled to hear the amount of low frequency build-up in that corner.
Considering those air-borne vibrations were affecting my vinyl performance, I moved the turntable toward the left hand end of the shelf. Of course the table was still the same distance from the sidewall, but being close to the mid-point of the 5' shelf, the arm/cartridge now operated some distance from either corner.
The result was obvious with any music played at moderate to moderately high levels. It was overall much "cleaner", with greatly improved definition and reduce sonic smearing.
Just as we want to avoid corner placement for nearly all loudspeakers, I believe all component placements should follow the same guideline for best performance. And hey, it was free!
My listening room has a 5' wide alcove along one sidewall. Within that I constructed two full width shelves to place source components. This accommodates freestanding record storage boxes underneath.
Initially I placed my turntable at the far right end of the top shelf. Unconsidered at first was the result of the arm/cartridge being very near a corner as it's arc traced a record. One day I had reason to lean over the platter area while music was playing. I was startled to hear the amount of low frequency build-up in that corner.
Considering those air-borne vibrations were affecting my vinyl performance, I moved the turntable toward the left hand end of the shelf. Of course the table was still the same distance from the sidewall, but being close to the mid-point of the 5' shelf, the arm/cartridge now operated some distance from either corner.
The result was obvious with any music played at moderate to moderately high levels. It was overall much "cleaner", with greatly improved definition and reduce sonic smearing.
Just as we want to avoid corner placement for nearly all loudspeakers, I believe all component placements should follow the same guideline for best performance. And hey, it was free!