Pairing of different JL Audio Subwoofers

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. 

I wonder if the D.A.R.O. would still work in this configuration.

Chief, I think you would be better served by getting three more E112's
With four of them you will not need DARO. 

Just read that the Fathom has to be set to MASTER and all others (up to 10) to SLAVE. Then to daisy chain each slave sub with XLR cables from the sub designated the master. When set up in this way all subs are measured and corrected as a single entity.

@mijostyn, you may have a valid point. Since the cabling configuration does not seem to support my vision of using F112 as the slave, I may just have to aggregate one or two more subs. Really don't want to go this route but seems like there is not other way.

the F112 has a XLR output and the E112 does not accept XLR input.

A xlr to rca adapter should get the job done.

A xlr to rca adapter should get the job done.

Indeed, I have an XLR-Y cable connected to the XLR output of the master f110.  One leg feeds the other f110 via an XLR cable.  The other leg feeds the e110 via an RCA cable.