Set-up with two subs and an integrated amp

Yes call Svs they Have them Or can recommend the only thing you need is a 2 Pr of either spade or bananas crimp on and some awg 16 wire that plug in the speaker terminals   just Velcro’s 
to hold on I have a pair of Rca from there that plug into the sub.It’s also more accurate signal direct from speaker outputs

Call crutchfield for the subwoofer subwoofers adapter.
it has several small resistors under $30 ,you can buy 2 pair of
screw or crimp on bananas or spades you need to hookup
tp the loudspeaker terminals..