The lowest fundamental tone a string bass plays is at 41hz per second.
The treatment of overtones is not relevant to your question but remember the difference tones. A difference tone could be called an "undertone". A fundadmental of 41 will generate a difference tone of 20.5,which will generate a difference tone of 10.25 and so forth. These later tones are felt as much as heard and are responsible for the visceral ambience in a live performace that is(for me) outrageously expensive to recreate.
A poster above mentions an elaborate array of subwoofers and based upon the quality of his posts,I believe he has recreated that ambience.
I'm not a subwoofer guy(which is my problem,of course) and am happy if enough of the fundamentalsin the forties and fifties are present to represent the harmonies involved.
Hope your friend finds speakers he likes.
The treatment of overtones is not relevant to your question but remember the difference tones. A difference tone could be called an "undertone". A fundadmental of 41 will generate a difference tone of 20.5,which will generate a difference tone of 10.25 and so forth. These later tones are felt as much as heard and are responsible for the visceral ambience in a live performace that is(for me) outrageously expensive to recreate.
A poster above mentions an elaborate array of subwoofers and based upon the quality of his posts,I believe he has recreated that ambience.
I'm not a subwoofer guy(which is my problem,of course) and am happy if enough of the fundamentalsin the forties and fifties are present to represent the harmonies involved.
Hope your friend finds speakers he likes.