Hello I'am newbie and I'm sorry for my bad english. I'wont connect hi-power out of my Amplifier Pioneer VSX-D510 directly un subwoofer terminals. I wish use preout RCA and filter managment (cross freq., level of output, special filter...)of my Amplifier. The crossover integrated on my RM6000 is a passive filter, right? It's work only if I use hi-power input but if I use low levev pre input doesn't have any effect... or low pass will be still active in this configuration?