Do I REALLY need a cable labeled as a subwoofer interconnect, or can I simply use any old audi RCA cable witha Y-adapter for my SVS to my 45TX? Is there a real benfit to getting a cable supposedly "designed" for subwoofer use? Or am I a victim of marketing hype? I bought a 60$ cable from Ultimate (Monster brand) but would love to know if I can use something more practical...??? Must know TODAY!!! Please...help... Thanks in advance guys.