I am getting into the world of analog electronics, although it is much more challenging it is much more interesting. Im dabbling into audio and would like to build an op-amp amplifier followed with a class ab amplifier. But while toying around with the circuit the output voltage dropped significantly when the load went from 1k ohm to 8ohm and the phase shifts more. From my knowledge of AB amps there is only supposed to be a slight drop on each peak due to the diodes and shouldn't shift too much. 
Can someone explain to me the effect of the load on the output? (Also if someone could point me to helpful resources that involve the mathematics and theory regarding analog electronics that would be greatly appreciated.
Best Answer
"10 uF" is far too small for a coupling cap into 8 ohms ... try 1000uF here.
And simulate a voltage source via both caps into both loads. You'll see the difference clearly.
Resources? Basic AC circuit theory, covering the impedance of capacitors versus frequency.