You said you have components up front and rears, everything is being amplified right? Well components consists of tweeters and mids which makes it 4 speakers. Adding rears would be a total of 6 speakers. Each speaker has a set of wires, positive and negative. So looking at that pic, you have a positive and negative wire (= 1 speaker) going to each channel which = to 4 speakers being powered by the amp. So your amp isn't powering a set of speakers (most likely the rears)What do you mean? There are 4 speakers being powered and 4 outputs on the amp that are connected?
Ill do that BBB complaint now!
If it is wired this way (each channel of the amp powering the speakers up front...tweets...mids) and you have a HU capable of doing an active setup, then I'd just toss those passive xovers and run an active setup with the HU.