Hi Brax,
If you look back not too far the Dedicated Sub was just that. Before the 626
R, the
QSO626 (which actually was an MTM design with two 6" woofers and a 2" tweeter) had a sub "dedicated to it".
See the "original 626 below:

Here is the look of the now discontinued Dedicated Sub:

That sub was designed to be the correct height to use as a stand for the QSO626, making a very formidible and affordable system.
The new 626R stand and OXO:

The present stands (which can also be ordered as an OXO) do not have the internal volume to be VMPS subs. That is with Passive Radiators and putty.
I asked Brian about this a couple years ago when we first started using them. I thought we coul make them side firing 10"ers, but he said they didn't have the cubic inches.
We also have the Pedestals as below for those who want that type of look

And a pair for the LRC or a RM30C
