La Scalas with a subwoofer

[Paducah Home Theater]

Just as a side note since people are talking about SVS, basically the gain is pretty weak on them compared to Klipsch, which is no bueno sometimes because people like to use tube amps, and the subwoofer output is often a glorified splitter, meaning the output is pretty weak with no way to turn it up.  In other words, sometimes the SVS gain can be maxed out and you're left with wanting more if you are a bass head by any stretch of the imagination.  If this sounds like what you are trying to do, I would highly recommend either an active DSP like Xilica or MiniDSP where you can turn up the levels, or at least a preamp that lets you get more output such as the Halo P6.  At the minimum plan on using both inputs of the subwoofer, using a splitter if you have to, which gives it a boost, but even then it's just sometimes not enough.