As mentioned, the dedicated Sound Anchor stands will make the greatest improvement for your 2Cs.
The next change to make that will give you a very audible improvement is to bi-wire them: run two identical speaker cables from your amps to the separate inputs on the speaker (and remove the strapping between the inputs).
.
The next change to make that will give you a very audible improvement is to bi-wire them: run two identical speaker cables from your amps to the separate inputs on the speaker (and remove the strapping between the inputs).
.