I added large rubber wheels my TV rack. My audio system solid steel vertical rack being roughly 19 x 19 was too unstable. I recently replaced it with a solid maple table top 5 x 2 x 2", it rests on 2 @ 20 x 20 end tables under each is a large harbor freight dolley. The improvement in all 3 dimensions, as well as bass, puts a huge smile on my face every time I play a CD
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