Built with high-grade plywood frames and 9 inches of 4 PCF Rockwool mineral wool insulation, our Bass Traps deliver deep low-frequency absorption starting at or below 60 Hz and near-total absorption from 125 Hz through the highest frequencies. Purpose-built for corners, wall mounts, and ceiling placements where bass energy accumulates most — the essential treatment for studios, control rooms, home theaters, and any space where low-end clarity matters.