Hi I have a couple of AuraSounds 50W bass shakers and am planning on hooking them up to a Sub Amp but I have a week to wait. So today I bought an old home theatre amplifier and am wondering if it's okay (safe for bass shakers) to power them through this. It's a Pioneer VSX-915. There are Sub Pre outs but I suppose these are not amp-ed and wouldn't be right..? Should I hook it up through the front speakers and maybe try change settings on the Amp? Thanks for your help if you can.