http://d66037.u21.hs.addix.net/en/manuals/user.html, strana 8
"Jacks for connection of the ELAC SUB 101 ESP to the pre-amp output of asurround amplifier, surround receiver, or any other signal source with line output.(e.g. CD-Player). With mono sources, please use the terminal marked “L.” If thebass is reproduced too weakly or the turn-on automatic does not react to quiettracks, please use a so-called Y-strand cable and connect both input terminals."
Daklem, činč u L ulaz. Ako je tiho Y račva u oba.