Two sets of speakers require two sets of stands. Make two (four). Or put the smaller set on the monkey coffin.
I used monkey coffin and small desktop speakers to illustrate the range of speakers I am/could be building, not that I'm directly comparing them against each other. The stands need to accommodate that range of sizes if possible.
This direction would be my first thought. T-slot extruded framing is incredibly useful stuff, and it's available in black which is nice. A single, rear column of the ~2x4 or ~1x6 profile would be sturdy, adjustable and attractive imo
How would you make the height adjustable?
@augerpro my initial thought would be to make the sliding portion of the same profile or at least the same width as the base post piece and use a flange on the two outside edges. The lower flange holes could, if necessary, be slotted to allow adjustable tilt.
The carriage/slider that holds the speaker could be made from T-slot extrusion, wood or whatever suits you.
If you'd like to avoid flanges on the sides, simply drill holes in the sliding piece aligned with the T-slotd in the face of the base post. If using a T-slot profile for the slider, holes would need to be drilled through within the slot.
That's off the top of my head. I haven't visited the 8020 site in a long time, but they carry a selection of connectors, hardware and linear bearings that you may find interesting. This gear is an erector set on steroids.
The carriage/slider that holds the speaker could be made from T-slot extrusion, wood or whatever suits you.
If you'd like to avoid flanges on the sides, simply drill holes in the sliding piece aligned with the T-slotd in the face of the base post. If using a T-slot profile for the slider, holes would need to be drilled through within the slot.
That's off the top of my head. I haven't visited the 8020 site in a long time, but they carry a selection of connectors, hardware and linear bearings that you may find interesting. This gear is an erector set on steroids.
I would also like to point out that while 8020.net seems to be the original T-slot framing system site, there are loads of other suppliers these days