Nothing I have heard combines the best dynamic range with a disappearing act. That said, I would look at omnis like Ohm, German Physiks, and MBL for the disappearing part. Subwoofers will help the dynamics on these. Dynamic range can be very good on some omnis, because they have a lot of radiating surface relative to driver size. For the best dynamics, high efficiency models like horn speakers excel, but few that I have heard can disappear. One exception to that which I have heard is the Volti Audio speakers. These are horn hybrids that offer the advantages of horns in terms of dynamics, but without many of the downsides of horns, such as beaming, the "cupped hands" effect, or sound that seems anchored to the cabinets.
