Hi quick question here, I have a preference to use RCA cable for the above connection. The Fosi just has a normal (preamp) input, can I connect this to the (low level) line in RCA input on the sub., or do I need something with a specific Sub output? Newbie.....obliged
You need an output for connecting to the subThe Fosi just has a normal (preamp) input
If Your Sub has lowpass filters, then it should work right away. If not, You'll have to provide the lowpass filtering before the sub or You'll hear voices through the sub.