Cons of using main XLR/Balanced outs for subwoofer?

Plan to use my Rowland Concerto integrated amp to drive my Salk Song3 mains full range and preamp output to a chain of 4 active subs in a Distributed Bass Array. Would like to do the Audiokinesis Swarm eventually but right now have to use existing subs from home theater system. The Rowland is fully balanced from inputs to outputs, with  2 sets of balanced XLR outputs, no unbalanced outputs. First option: balanced output A to a Jensen Transformer Iso-Max PC-2XR (2 Ch XLR in/RCA out), then RCA into L/R inputs of sub #1, then daisy chain to rest of subs somehow using either dual or mono RCA connections. Option 2: Rowland balanced out to balanced inputs of a Revel Performa3 B110 sub, then begin daisy chain using mono RCA output.  Already have the Revel sub and Jensen Transformer model, rather not have to buy the Jensen SUB-1RR unless that is truly better. The Revel sub also has mono XLR out but looks like XLR inputs are only found on hi-end/cost subs or pro gear, so likely just sticking to low cost good DBA subs with RCA inputs like the SVS-1000 Pro (already have a pair). Option 1 could use the summing circuit within any sub like the SB-1000 Pro to start the chain. Option 2 uses the Revel (maybe better circuitry?) and means I don't have to use the Jensen with its extra cost and cabling. Would really appreciate input on these options or others from Ralph @atmasphere and anyone else on XLR/RCA issues with multiple subs. Thanks

I'd use the Jensen transformers if I were you.
The problem you can run into is that of ground loops when interfacing single-ended and balanced equipment. The transformers sort that out by providing ground isolation. They won't rob you of any impact as they go down to nearly 1 Hz.

2 followup questions to your helpful response. The straight Rowland to Revel connection would be balanced. Are you thinking the balanced to single-ended interface inside the Revel might not provide ground isolation like the transformer so hum could show up downstream in the daisy chain? Second, any significance to fact my Jensen PC-2XR is rated flat to 10Hz vs the flat to 1Hz of the SUB-1RR?
Thanks 

@milarep Yes to both questions.
The 1Hz response will insure that you have no phase shift at all at 20Hz or even 16Hz. Phase shift in the bass will cause a lack of impact. The transformer rolling off at 10Hz will exhibit phase shift up to about 100Hz.

I am now way beyond my knowledge base and hearing the voice of common sense confusion- which could be just confusion, nothing more. You indicate that transformer roll-off will cause phase-shift up to about 100Hz and this is important to avoid. The frequency response of the Rowland's outputs is 5Hz-70kHz -3dB @ 8 ohms, so seems appropriate to output into the Jensen transformer (the SUB-1RR) with flatter F-R response. But immediately downstream from that transformer could be either a Dayton SA1000 amp which doesn't appear to have flat rating below 18 Hz ( its specs are hard for me to understand) or the first sub in a DBA chain (unlikely to have flat rating to less than 20 Hz for my system). Furthermore, setting up a "swarm" DBA usually involves intentionally producing a mix of different arrival times from the subs by adjusting position, phase, polarity, closing ports, etc. Duke always says the ear is very forgiving of small timing errors in the low frequencies such that the speakers + room = a minimum phase system. So I am unclear how a phase shift in the low (< 20Hz) bass is consequential. OTOH he also notes that the ear has exaggerated sensitivity to frequency response errors (non-flat curve below 20Hz) in the bass region, so maybe that is what you are trying to tell me. FWIW, Rowland recommended the 2 channel Jensen transformer for running subs off the balanced outputs in my Concerto (but that was 14 years ago). I again want to say I will be running my Salk mains (+/-3dB at 33 Hz) full range, no high pass crossover. I appreciate your efforts to understand my options.