+1 @erik_squires You might try these under the center speaker that may reduce resonances and improve clarity, and they’re even adjustable for weight and sound. They’re only $23 for four, and if they don’t produce a meaningful improvement you can just return them. A lot of people here swear by using springs under audio equipment so probably at least worth a try for curiosity sake if nothing else.
https://www.amazon.com/Tertullus-Isolation-43mm%C3%9738-5mm-Aluminum-Turntable/dp/B09QC1DJXT/ref=sr_1_6?crid=3O9WPNIK3HIXK&=undefined&keywords=speaker%2Bisolation%2Bpad%2Bspring&qid=1680557813&s=electronics&sprefix=speaker%2Bisolation%2Bpad%2Bspring%2Celectronics%2C143&sr=1-6&th=1
