I am looking to control a Helmholtz coil with a function generator but I need a waveform amplifier to increase the current and voltage from the function generator. The coil has to be run using low-frequency AC signals from 10 Hz to 100 Hz.
I've seen a few expensive waveform amplifiers but I was wondering if anyone has any experience using an audio amplifier to amplify a function generator and how they did it.
Edit 1: This is a coil setup I'm looking at using Helmholtz Coil. I would need a maximum field of 30 G so that would require a current of about 4 A and with the DC resistance of 2.6 Ω, as they would be run in parallel, a voltage of about 15 V (these values are actually higher than what would be needed I'm just trying to account for the worst-case). As these coils are designed for DC experiments and not AC their inductance and self-capacitance are unknown.
The reason why I am not certain about the coils I will be using is because I would like to optimize them as much as possible so I may need to create my own. However, I do expect to use a low winding, low resistance set up similar to the amazon coils so I will need an amplifier capable of output around 5 A with 20 V