What to do on a snow day? set up a bi-amped AMP rig AMP BH-420 w/ crossover set around 250 for the low freq. into the bottom firing 15 of the ampeg pr1528he AMP BH-250 sending the tope end into the 2x8 +horn section of the ampeg pr1528he. extra credit for putting different effects into the high freq section only (can you say no loss of bottom end!) Admittedly impractical (and takes a few patch cords!) but fun to try!