# matching impedance and maximize the speaker’s output

If I have a signal generator with 600 ohm output resistance and a 8 ohm speaker. The number of turns in primary coil is 50, so the turn ratio should be $$\frac{600}{8}=(\frac{N_2}{50})^2 \\N_2=433\\N_1:N_2=50:433$$ Furthermore, will there be any difference on maximizing the power output with applying different frequency output in the signal generator!? such as 1khz vs 5khz.