Straddle with spring system under the subs. And spring directly atop the upright of the the straddle table/frame decoupling the stand mounts, would probably work very effectively.
Of course working out effective spring rates for >3 hz isolation would be the key. The straddle frame wouldn’t need to be too heavily built if you use the most rigid part of the structure, the uprights to hold the sprung mass of the speakers.
Ensuring the standmounts have ample outriggers to accomodate the movement of the center of gravity remains within it’s base., to prevent it toppling over.
Clearly defined budget, aesthetics, and goals should be considered before any design and serious implementation be undertaken.
For example you could put a Townshend poudium on a frame which straddles your sub, but similar results by springs under a frame/straddle structure. You’re going to want someone to weld something up. Perhaps heavy timber could do similar.
Straddle mentioned early on is a good option in my opinion.
Of course working out effective spring rates for >3 hz isolation would be the key. The straddle frame wouldn’t need to be too heavily built if you use the most rigid part of the structure, the uprights to hold the sprung mass of the speakers.
Ensuring the standmounts have ample outriggers to accomodate the movement of the center of gravity remains within it’s base., to prevent it toppling over.
Clearly defined budget, aesthetics, and goals should be considered before any design and serious implementation be undertaken.
For example you could put a Townshend poudium on a frame which straddles your sub, but similar results by springs under a frame/straddle structure. You’re going to want someone to weld something up. Perhaps heavy timber could do similar.
Straddle mentioned early on is a good option in my opinion.