Low impedance single coils & hum

[peskywinnets]

I often hear it said that low impedance single coils don't suffer from hum beucause they don't have as many windings - but what gives here? If they don't have as many windings then the signal will be smaller, if the signal is smaller, then that puits it down towards the noise floor (which will still have some hum in it)....meaning more amplification needed = more noise.

Anyone conducted pickup experiments to find the optimum 'least windings for best SN ratio & lowest hum pickup" ??

[Mike Sulzer]

I often hear it said that low impedance single coils don't suffer from hum beucause they don't have as many windings - but what gives here? If they don't have as many windings then the signal will be smaller, if the signal is smaller, then that puits it down towards the noise floor (which will still have some hum in it)....meaning more amplification needed = more noise.

Anyone conducted pickup experiments to find the optimum 'least windings for best SN ratio & lowest hum pickup" ??

Low impedance is generally better for pickup from electric fields.

But for magnetic fields, it works as you say: the extra amplification puts you back where you were. You still need magnetic hum cancellation for low impedance pickups.