I see two possible solutions for a 24½" wide center speaker.
Look closely at the photo of the Song3 Center. There are two stands under it
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The other solution is to buy one of those wider center speaker stands. With a 12" wide stand, there would be 6¼" overhang on either side. With an 18" wide stand
, there would be 3¼" overhang.
If you want, get a ½" thick piece of plywood or MDF, cut it to fit the footprint of the speaker cabinet, paint it black, and mount it on top of the speaker stand. In that Sanus 18" wide stand, I see 6 screws that attach the steel top plate to the two columns. Find longer screws with the same threads and use them to attach the plywood on top of the steel plate.
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