I have a similar problem. my Line 6 spider V 30W. There is no sound from the speaker. from the earpiece sound goes. but it only works on hearing aids. the speaker is dead.... I did update the software to version 2.0. I found the Phones mode menu in the setup. when the phone is over and then back to line mode, the sound works. when I turn off the power and then turn on the amp again, the sound doesn't work. it is always necessary to edit phones mode to phone and then to line to make the speaker work.
