I'm designing a powered subwoofer for myself and I've been intending to use a toroidal power transformer I have (60Hz mains frequency). My plan is to have the PSU, amplifier, and speaker all in one box.
In theory a toroidal inductor shouldn't have a magnetic field outside of the toroid, but what about in practice? Suddenly I'm worried about the magnetic field of the power transformer affecting the speaker function, especially since it would be right in the middle of the frequency range of use.
In theory a toroidal inductor shouldn't have a magnetic field outside of the toroid, but what about in practice? Suddenly I'm worried about the magnetic field of the power transformer affecting the speaker function, especially since it would be right in the middle of the frequency range of use.