Hello Tntate - I emailed them moments after my last post. No reply yet.
My stands are also filled with sand, but putting the speakers on them and tightening them down sharpens the sound rather than muting. In my case the speakers are bolted on with two screws but are also on 4 spikes between speaker and stand.
Suggestion: You could try placing some small hard items (ballbearings, etc., whatever you can find) between the stands and the speakers, then bolting them on but not tightly enough to mark the wood, or also placing a thin sheet of hard material (805's have steel plate) under the speaker to protect the wood from marking by whatever you place under them as "spikes"?
This should be similar in principle, me thimpks.
My stands are also filled with sand, but putting the speakers on them and tightening them down sharpens the sound rather than muting. In my case the speakers are bolted on with two screws but are also on 4 spikes between speaker and stand.
Suggestion: You could try placing some small hard items (ballbearings, etc., whatever you can find) between the stands and the speakers, then bolting them on but not tightly enough to mark the wood, or also placing a thin sheet of hard material (805's have steel plate) under the speaker to protect the wood from marking by whatever you place under them as "spikes"?
This should be similar in principle, me thimpks.