I've finally gotten my Denon AVR-E300 hooked up today (had to run CAT5 under the crawlspace in my house, ugh) and the internet radio and standard radio has fantastic sound, great bass. However when I switch to Sirius XM or AirPlay (for iTunes) the subwoofer barely fires. I've cycled through as many of the setup screens as I can, but I cannot figure out what settings need to be adjusted in order to get some cranking bass on Sirius or AirPlay. Help! Thanks.
