Go with that sort of sub. The lower frequencies are the ones that travel. If you had a sub that did 20Hz your neighbors would shoot you or get you evicted.
38Hz is a figure. The sub DOES reproduce notes below that, but at less volume. 38Hz is likely the 3Db down mark, a standard measurement.
Even with a sub that goes only to 38Hz you should be careful in placement, as the resonances could get ugly in a neighbors apt. I am in an apt in a 'over 55' building, so I cannot make ANY noise or be evicted. So I have my sub on a 2" thick concrete patio slab on rubber feet. It really keeps the vibration in my apt instead of my downstairs neighbors.
I like a small sub because it gives a normal bass sound at low volumes. So in a Jazz quartet, you get a true bass note from the bass. Nice.
38Hz is a figure. The sub DOES reproduce notes below that, but at less volume. 38Hz is likely the 3Db down mark, a standard measurement.
Even with a sub that goes only to 38Hz you should be careful in placement, as the resonances could get ugly in a neighbors apt. I am in an apt in a 'over 55' building, so I cannot make ANY noise or be evicted. So I have my sub on a 2" thick concrete patio slab on rubber feet. It really keeps the vibration in my apt instead of my downstairs neighbors.
I like a small sub because it gives a normal bass sound at low volumes. So in a Jazz quartet, you get a true bass note from the bass. Nice.