"Yes, both Primares have XLR input/output connectivity option. I don't know exactly whether it refers to true balanced design or not, but this should not affect the volume issue itself.."
Yes it will. Fully balanced components will output at a different level than when run single ended.
"As I said in the initial post, I use balanced (XLR) connections - which naturally means I use balanced cable."
Not true. Having xlr connectors doesn't mean the cable is balanced. There's plenty of SE cables that have xlr connectors on them. For a cable to be balanced, it must have 3 separate conductors, or 2 conductors and a drain wire.
Yes it will. Fully balanced components will output at a different level than when run single ended.
"As I said in the initial post, I use balanced (XLR) connections - which naturally means I use balanced cable."
Not true. Having xlr connectors doesn't mean the cable is balanced. There's plenty of SE cables that have xlr connectors on them. For a cable to be balanced, it must have 3 separate conductors, or 2 conductors and a drain wire.