I think I did not do a good job of asking this question.
If I add a sub to an SC-1, which used lets one try the Dunlavy sound for a few hundred bucks (and less than a hundred shipping), I am afraid that the area between 100 Hz and 300 Hz will still be deficient of bass, and so an SC-1 plus a sub will still be much more lacking in bass than an SC-II, III, or IV.
Maybe nobody is answering because they are embarrassed for me for asking such an easy question. :-)
If I add a sub to an SC-1, which used lets one try the Dunlavy sound for a few hundred bucks (and less than a hundred shipping), I am afraid that the area between 100 Hz and 300 Hz will still be deficient of bass, and so an SC-1 plus a sub will still be much more lacking in bass than an SC-II, III, or IV.
Maybe nobody is answering because they are embarrassed for me for asking such an easy question. :-)