drum key or crescent wrench
Lay down the bass drum on kick drum head.
Use the drum key to remove the clamps.
Lift the round metal rim and set it aside.
Lift the drum head and set it aside.
Now your bass drum is open.
Place your pillow inside as shown in the picture.
Reassemble in reverse order. When tightening the clamps start by placing them all on first then hand tightening like with a tire. Use you tool to tighten them firm, but don't over tighten.
Enjoy a better sound.
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