Class A Amp test

Yes the voltmeter acts as an open circuit because in EC voltmeters have infinite resistance, so it doesn't provide any path to ground. Remember voltmeters in parallel ammeters in series. It doesn't work correctly because your impedance is not matched. Are you familiar with the term impedance. Impedance is basically the same as resistance but not for DC but for AC. It requires a different term because sometimes for AC the active resistance (ohm) is not all there is. The reactive resistance of coils and capacitors (Xl, Xc) is also added to the equation, and the end result is a complex number far different than the DC resistance. Especially for speakers. So i was saying, imagine this. You know what a voltage divider is, right. What will happen if your first resistor is 1k and your second resistor is 4ohm? The output voltage will be severely diminished, right? Well same applies here. To drive a 16ohm speaker without significant dampening you need to make your 700ohm resistor at least 16ohm too. Moreover you need to add a large capacitor (let's say 1mF) in series with the speaker, to filter out any DC and only pass AC through the speaker. DC may damage it. The capacitor serves exactly for that. It blocks DC, while it passes AC. Try to reconfigure it, and if you can't I'll give you some extra tips

Excuse me not 16ohm, 8ohm

Thanks thebugger, I'll work through what you've written and let you know how it goes