My dealer told me to use the y-adapter and put one leg on left and the other on lfe in. seems to work fine, dont understand why he told me this though.
AFTER PURCHASING MY KSW-15 MY DEALER TOLD ME TO COME OUT OF THE RECEIVER SUB OUT, TO A Y AND HOOK ON LEG TO LFE IN ON THE SUB WOOFER AND THE OTHER LEG TO RIGHT IN (OR LEFT).
THIS WORKS FINE, BUT IM CURIOUS AS TO WHY THIS IS THE RECOMMENDED HOOKUP.