6th ave has the Kenwood Excelon x-889 for $218 + $.06 (yes six cents) shipping. Deal of the century there, the only thing this HU cannot do is active crossovers, but the 2 high pass and low pass xovers it does have are very versatile and flexible with 10hz increments between 40 and 100 for low pass and high pass, plus 12, 18, and 24 db slopes. Then there is theTime aligment, SRS WOW, G analyzer (lol), and 24 bit burr brown D/As. It'd slap those alpines silly SQ wise.