Hello all! I have an Arcam a19 used as a preamp with an Arcam p25 driving a pair of kef ls50 metas. All is running smoothly except I feel these need the help of a sub to complete the low end. I am looking to purchase a pair of Rhythmik L12's, but after looking at the connections of the Arcams, im unsure as to how to properly integrate them into my system. Thank you for any help I can get.