I actually changed my original configuration slightly. The VTF-2 is not starting to ship until Friday, so I started doing some more looking(can't wait to get everything now that it's ordered). I ended up getting the SVS PCi 20-39 for a sub instead. In some of their specs it mentioned one of their power ratings at 4 ohms. Does anyone know if you need a 4 ohm capable receiver for this sub?