Currently Being ModeratedDec 27, 2012 6:19 PM (in response to Jvivona)
Are you completely sure the guitar is being bussed to the usb?
Did you select the mixer in garageband > preferences?
Unless the guitar has a XLR output and is able to be powered by a phantom source you don't need the phantom power on.
Currently Being ModeratedDec 28, 2012 12:50 AM (in response to isteveus)
isteveus: Thanks, I will try it without phantom power, I will look at the mixer in preferences-could it be the vloume was not turned up, I htought the volume was controlled by the board? The buttons are depressed selecting the USB output for the guitar channel and the board send. I'm pretty sure its correct. I followed the line diagram as well, there doesn't seem to be anything unselected, its a very straight forward board. anything is possible. I'll let you know.
Currently Being ModeratedDec 28, 2012 4:39 PM (in response to Jvivona)
The guitar input is via a Hi Z FET preamp and is not effected by the phantom power which only goes to the XLR.
On the mixer, make sure the guitar input is routed to the record bus and that this, in turn, is routed to the USB output.
Its most likely that the problem is with the input level setting in the computer. Try setting this at max to begin with.