This might be a problem as the F112 has a XLR output and the E112 does not accept XLR input. I would have to use the RCA output of the E112 to input it into the F112.@chief_trojan Jensen Transformers makes a transformer that is optimized for subs that will do the conversion from balanced to single-ended or the other way. It has bandwidth down to a fraction of a Hz so it won't interfere with bass impact. I'm using a pair of them in my system.