Hello I’m going to have my caddy with RNS 510 built into a nice caddy. Now the question: Should I run the 5channel Alpine power amplifier bi-amping and thus not install the Focal’s turnout? Or would you better use the turnout, you can adjust the tweeters 0 or -3db, and the midrange. The turnout is certainly good quality. By the way, the 5th channel goes to a closed bass box. That means channel 1-4 is only responsible for the Focal 165 FX. e Alpine can do that apparently, she has a bandpass filter. Oh yes, and the whole thing is spewed by the RNS 510 from VW. To do this you need a high/low level adapter. Which one do you take? I hope the signal from the RNS 510 is to some extent clean and usable. The rest is a dream for me. Top components. Thanks for your feedback.