I have a 10W audio amp module that uses a TDA2050 IC operated at 12VDC. Being push'pull, the 10Vpp output is centered on the zero line. I would like to shift this up 5V so that the signal is entirely above the zero line. In other words, so it swings between 0 and +10V. I have a separate 5VDC supply that can provide the necessary current. How should I connect this to shift the signal as described above?