As shown in the attached files, I created an amplifer circuit using an inverting amplifier as the pre amp and a class AB circuit for the power amp. I used a voltage divider to supply 4.5V. My pre amp works fine. But the amplitude of the output of the power amp is very much lower than i want it to be. I can fix this upto a certain extent using low resistor values for the voltage divider but then those resistors get immensely heated up and also, the phase shift alters. So can someone please provide me a solution as to how i can modify my circuit to get a well amplified and less noise distorted output. The IC used is LM324 and the resistance of the output speaker is 8 ohms. The pspice schematic and simulation are attached below. Thank you very much
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