I'll start of with introducing my equipment, my skill, and my problem, just to make things easier for everyone. I'm a proper amateur when it comes to the audio scene. I have a slight difficulty to get the language, and my understanding of electronics and cables is definitely limited. So I will apologize in advance if I by any chance say something wrong or mix things up. I run a Logitech Z5500 as a base with a pair of Proson Libra 804 in the front. Just bought a Teac AG-D200 receiver to take it up a notch. This is all hooked up to a computer (I'm a poor student. A proper TV has to wait) that runs a Auzentech HDA Xplosion 7.1 audio card. So think I plugged everything in, and I did a speaker check and everything seems to be in place except for the subwoofer. That piece of black box is completely silent. I'm going to try and explain how I connected everything. From the computer I run a coaxial cable to the BD/DVD port of the receiver (for simplicity's sake). From there I run all satellites in each and every direction. Then we get to the sub, which is a piece of work in itself. To start with, for those who may not be familiar, the sub works (I guess) like a receiver of its own. In the vanilla setup, all satellites are connected through it. The control interface, which looks like a silvery monolith of pure angst, also handles input. From the monolith runs a fastened cable down to the sub, and the contact looks like a bit like a normal VGA cable (not sure if it is though). Alright, so I was out to buy a 3,5mm - > RCA cable, but the store I went to only had 3,5 -> 2 RCA, so I got that one and an 2:1 adapter, thinking it would work. So I run the RCA from the receiver's pre-out subwoofer port to the monolith panel, plugging it in the orange 3,5mm port that says center/sub. I test my sound but there's nothing from the box of boom. Help me internet! I'm not sure what I've done wrong. I will supply you with any information I can. If needed I can also take pictures.