hi there, i recently bought a "home theater in a box" sony HT-4800DP which comes with a STR-K4800P receiver. the whole setup and cabling thing is done and ok, however i have some concerns that i wasnt expecting. 1. i found the volume to be really low. at acceptable listening volume, the volume knob is all the way up close to max (50 out of 70 max) 2. when i do the "test tone" to check if all the channels are ok, i sometime (not always) get the sound from the front left speaker coming out in the right surround speaker as well. is this normal?