Elastic waves are not elastic enough, and the edge thickness is too thin, which leads to insufficient elasticity. In addition, yours should be a paper basin, a plastic pp basin or an aluminum basin made of glass fiber woven on the paper basin, which has a good bass effect. Add an elastic wave with better elasticity, or use two elastic waves to change into thick edges and thicken the edges. The thicker the edge, the better. It is recommended that the foam edge be super thick. The edge of one of my woofers is very thick.