I'm trying to bias the following circuit to power an 8 ohm speaker with an 8Vptp output. The following are the calculations I've done to get this current setup but the output is only good up to 1Vptp before it starts to lose gain and get crossover distortion. What am I overlooking here?
Taking power output as 1W, V=sqrt(P*R)=sqrt(1*8)=2.82. sqrt(2)*2.82=3.99V so this should give me an 8Vptp output.
Taking hfe of 100 then Ib should be 5mA
12V-1.4 for the diode drop =10.6 and dividing by 2 to bias equally =5.3V
5.3V/5mA = 1060 ohms
What can be done to eliminate this clipping in the practical circuit?