When combined with proprietary range limiter membrane system, the 244 Bass Trap with FlexRange Technology absorbs up to 50% more low end (below 60 Hz) and retains 75% more high end (from 400 Hz and above) versus the broadband full range option. Compared to other commercially available products which are simple, fabric-wrapped, DIY-type panels, the 244 Bass Trap with FlexRange Technology is precision engineered and manufactured to exacting standards. We begin with our patented two-frame system that allows low end to be absorbed from the sides and back while the professionally constructed frame maintains a crisp, sharp edge. GIK Acoustics uses high-quality fabrics as standard options as opposed to cheap burlap or micro suede.