Another inductor question

[Rbrockman]

I have a question concerning inductors and cross-over wiring. I'm quite familiar with inductor to inductor placement guidelines, but am now wondering about their affect
on any wires running within the magnetic field produced.

Example: An air-core inductor is oriented horizontally on the crossover board, so that the magnetic field runs primarily vertically. Wiring connections are run under the crossover board and some wires happen to run within the magnetic field of the inductors.

Is the effect of any induced voltages so small not to be concerned with or should the crossover board be re-wired to avoid this entirely? I would have just re-routed wires to begin with if I had questioned this before four crossovers were soldered, hot glued, and mounted.... ops:

Thanks for any guidance - hindsight seems so much more intelligent :roll:

[JonMarsh]

Some folks have measured significant voltages that way, by using a loop of wire that is open circuit, but with a real world situation, you have at worst a step down transformer (the ratio of the inductor turns your one piece of wire) with a REALLY lousy coupling coefficient! So if you run that loop of wire, and terminate it with an 8 Ohm resistor, then look at it with a scope, you'll get some idea of the actual cross talk. It's best to run wires that have to be near it at 90 degrees-then the coupling drops to essentially zero. So, my thoughts are, don't lose sleep at night over it.

[Rbrockman]

Thank you for the response. Silly little things like this create untold concerns for those of us paranoid with the details..... I'll sleep much better now

[dsrviola]

While I wouldn't worry about it in a budget or super compact speaker, I do make an effort not to have any caps (or to a much lesser degree: resistors) in line with the magnetic field of air core inductors. It's a subtle difference in sound, but it's noticeable.