hey i have a set of infinity perfect 6.1 components and i am using a Hifonics nx600 to power it (150 watts x2). should i set the crossover on my alpine to OFF and use the crossover on the hifonics? i'm thinking about doing this because the lowest crossover point the deck can do is 80 hZ.. and my perfects frequency response starts at 75 hZ.. so basically i was thinking turn the x-over on the HU off and use the amp to fine-tune it. or would it just be a lot better to have my great Alpine 7995 to crossover the highs at 80 hZ?? if i use the head unit to do the crossing over then i should and could set the crossover to FULL right? any feedback will be greatly appreciated. thanks.