I've got the power supply going. I have the correct rail voltages but no switching. I've tried feeding it a sinewave and replaced the ir2113s chip and still no switching.
Are you saying that if you set the gain fully clockwise and you read only 1.5 ohms between the input and center pin that you still only have signal on the input terminal?
You previously stated that you were getting signal to the IC but you were driving 88Hz into the amp. That frequency won't change. The 55 and 130Hz are not from the input.