Computer Speaker Mount

I wanted to mount my computer speaker on the bottom of the cabinet above my computer monitor. I bought the speaker on Amazon, USB Computer Speakers for Desktop Pc (https://www.amazon.com/dp/B0CKHPP3N8?ref=ppx_yo2ov_dt_b_fed_asin_title&th=1) . The right bracket is fixed and the left is in two parts to make it easy to put the speaker in. You could just use two left side brackets.