I have a problem with my Intex IT 4650-Elegant 5.1 speakers.The problem is,my centre/subwoofer works but only applying the enhancement called 'speaker fill' but only one of them would work like if i check the option 'swap centre/subwoofer output' the subwoofer would be centre speaker and one speakers does not give any sound and if i uncheck that option that gives sound but now the subwoofer does not give sound and there is not bass.I test the speakers lenovo HD audio managers and all are running fine!I don't know what to do,please help.Thans in advance.