03-09-13: DbphdIt comes down to semantics. It is incorrect to say that DSD does not convey information for bass management since that implies that there are codes in it to guide the application of bass management. That is not true. All that is contained in it is the music information as apportioned by the producer. By the same token, neither do PCM sources convey information for bass management.
As I understand it, DSD does not convey information for bass management; you need to convert to LPCM if you want bass management.
Bass management is applied by the user and, in the current state of the art, consumer products are limited to applying bass management to PCM signals (although it is possible to do this in DSD). If you apply bass management to PCM (or to PCM converted from DSD), you are re-allocating the signals to each channel differently than they were and you might say these arrangements are bass-managed but there is still no information for bass management.