Hello, my setup is next:
Precision power ppi 640.5
JBL GT5-1204br subwoofer
4 JBL gt7-68 speakers
https://www.rockvilleaudio.com/rwk4cu/
I had installed the subwoofer.I am splitting one of the two channels to another 2 channels in order to have 3 rca inputs for my amp, 1 for the channel 1...