@cleeds, certainly an old Sota is not going to be the quietest turntable around but a record is at least one order of magnitude noisier than that old Sota. My new one, which will hopefully show up next month is as quiet as it gets.
I use a calibrated mic to "listen" to my system all the time. It's program has an oscilloscope function and I can plot a frequency response curve which for this purpose needs to be near field. Rumble is a constant. Record noise is not. It is also much louder than rumble. But, you do not even have to measure it. You can see it in the subwoofers excursions.
To be short, there is plenty of noise between 3 and 12 Hz. With a flat record it is true that between 0 and 12 Hz is relatively quiet. Relatively.
It is also true that a sub sonic filter will be useful particularly for the idler wheel drive people. For people like me who use subwoofers boosted to realistic levels subsonic filters are essential for vinyl users unless you never listen over 75 dB. Also if you do not want to rocket your subwoofer drivers into the next county a mute switch is a nice addition.
I use a calibrated mic to "listen" to my system all the time. It's program has an oscilloscope function and I can plot a frequency response curve which for this purpose needs to be near field. Rumble is a constant. Record noise is not. It is also much louder than rumble. But, you do not even have to measure it. You can see it in the subwoofers excursions.
To be short, there is plenty of noise between 3 and 12 Hz. With a flat record it is true that between 0 and 12 Hz is relatively quiet. Relatively.
It is also true that a sub sonic filter will be useful particularly for the idler wheel drive people. For people like me who use subwoofers boosted to realistic levels subsonic filters are essential for vinyl users unless you never listen over 75 dB. Also if you do not want to rocket your subwoofer drivers into the next county a mute switch is a nice addition.