How to choose resistors for a multiple resistor voltage divider circuit?

I am trying to create a voltage divider circuit to off offsset two BJT input voltage is for a push pull amplifier configuration, and I am having trouble choosing the proper resistor values for my circuit. My source voltage is 12V Vcc and I need to create something like below. I know the basic theory behind voltage divider but I’m having trouble making it. Also, the solution has unlimited solutions so what are the best range of resistors to use? I will be powering an 8 ohm speaker with my amplifier. Thank you kindly.

• You pick them based on current consumption/heat since there is always current flowing through the divider from power to ground. – DKNguyen Feb 25 at 20:22
• How much bias current does your circuit require? – Dwayne Reid Feb 25 at 20:25
• You may wish to show your whole circuit. Do keep in mind that if your "12V" source is a car electrical system, you should plan on it ranging from 12V to 14V or so in "normal" use, and you should withstand excursions to +60V and -40V or so (Google "automotive load dump" -- you'll learn more than I know). If you're aiming for one diode drop across the transistors' BE junctions, then this circuit will be problematic. – TimWescott Feb 25 at 20:28
• This kind of biasing is not usually done using resistors. The usual technique is to use diodes or diode-connected BJTs to get the 0.6V drops. – Elliot Alderson Feb 25 at 20:28
• It is simple to calculate a divider if it is unloaded. As soon as you load the output (take current from them) the simple scheme collapses. To work around this you can pass a lot of current through the divider and take only a fraction out. But that is very inefficient. So we need to know a lot more about your circuit (To quote No5 : need input) – Oldfart Feb 25 at 20:32