Comparison of the compensated power spectra in different resolutions. At the top, velocity power spectra, and at the bottom, power spectra of the logarithm of the density. As indicated on the label, the solid black line refers to run A0 and the dashed lines refer to runs B0, A0_l10 and B0_l10. The vertical dotted lines show the mean ambipolar diffusion scale, ⟨ k_AD ⟩, the numerical dissipation scales, k_m,512 and k_m,1024 of the two resolutions and the sonic scale, k_s. Runs A0_l10 and B0_l10 are run at double spatial resolution compared to A0 and B0.