What LS to the amplifier??

Hi, so at the moment I connected the sub to my amplifier (4 channel) via two channels. The other 2 channels go forward into the amatur board (Polo 6n BJ 97 44 KW). But I have bought 2 doorboards with two LS. Since there is no more space on the amplifier, I could connect 2 LS directly to the radio. Now my question: Should I rather connect the LS in the amatur board or the LS in the doorboards directly to the amplifier? Think, because I can control the amplifier, that on the amatur board If only high sounds should be played, does the connection of the AmaturenLS offer itself or? Does I call the doorboards directly to the radio?! Am I right with my assessment? Achso eine 2. ENdstufe nicht einbauten Ich mich mich nicht einbauen Danke