My hommade Eminence Omega pro cab sounds a bit muddy on the open E up to the F# on 4-stringed bass. Might have something to do with the not so great group delay at these frequencies. The cab is tuned to 40 Hz and is about 35-40 liters big (SBB4) Would it hurt the driver to put it in a sealed cab? What would I gain loose? I tried it in Winamp and the groop delay disapered almoust completely. So, how will a driver designed for a vented cab work in a sealed cab? Will it hurt the driver?