Hello all, I want to connect an external speaker, a JBL Partybox, to my home audio system for karaoke purposes because I don’t want to damage or risk my good home audio speakers with screaming karaoke jackasses. I have a C8 preamp (new, not vintage) that I know can accept external equipment, I just don’t know what I am doing wrong to connect the JBL speaker. I got a 3.5 mm aux to RCA cable, connected the aux end to the speaker aux input, and connected the rca end to the C8 output RCAs and went through all the C8 selections to no avail. I even tried thenC8 RCA input RCAs out of curiosity. Not sure what I am missing. Any help appreciated!