How to create large inductors (1H) for audio use?
The primary of a smallish power transformer is on the order of 1 H.

Magnetizing current for such a transformer is on the order of 0.35 A, which means that its inductive impedance is

$$Z = \frac{V}{I} = \frac{120\ \mathrm V}{0.35\ \mathrm A} = 343\ \mathrm{\Omega}$$

This means that the inductance must be

$$L = \frac{Z}{2\pi f} = \frac{343\ \mathrm{\Omega}}{6.2832 \cdot 60\ \mathrm{Hz}} = 0.909\ \mathrm H$$

Inductors in that range, for low frequencies, use the same construction techniques as transformers, but with just the one winding.