Mirage M1 Speakers

Check out Herbie's Audio Lab threaded gliders. They would be in the similar price range to the Sound O' City outriggers. You just need to know the thread pitch of the inserts in the base of the M-1s. Great speakers by the way. They do like a lot of quality power and need some room around them as mentioned above.

I would use a stone or raised wood platform but the stone will work wonders the raised wood platform will be harder to achieve but you can tailor the amount of absorption based on what you fill the platform with.

You can get decent adjustable outriggers for under $300

Appreciate all the suggestions.

Cheapest way to get those 185 lb beasts up off the floor with some isolation factor.   8 x $1.37
tilt / tuck / tilt / tuck.

https://www.supplyhouse.com/DiversiTech-MP-3E-E-V-A-Anti-Vibration-Pad-3-x-3-x-7-8