I have read here that it is best to use both inputs on the subwoofer, by means of using a Y jack. I am waiting on the sub to arrive, and want to buy this Y jack before it gets here. My problem is that I do not know the configuration of the jack itself. Are there 3 male adapters, or 2 male 1 female? Is there a best kind to buy i.e. gold connectors, wire type etc.? The dummy at best buy sold me 2 Yjacks that connect to each other, for a total of 40 bucks, is he correct?