I have two AQ2200's that i wanna strap together. The 2200 only has one rca output/input for master/slave option. My question would be do i use rcas with y adapters or is there another cable that will work for this. tried searching and asked the local best buy guys. Their response was just use one plug off each side. I really didnt like that idea, any help suggestions on what cable to use would be helpful.