Dear all,
I've ventured into building a crossover for a two-way speaker system. I acquired capacitors and inductors from Mundorf, but now I'm scratching my head with the task of soldering all together. The inductors are made out of something that look like copper foil and I have never soldered something like this. Is there are right way of doing it? Do I need to somehow fix the foil before soldering? Or it should hang free off the inductor?
I've ventured into building a crossover for a two-way speaker system. I acquired capacitors and inductors from Mundorf, but now I'm scratching my head with the task of soldering all together. The inductors are made out of something that look like copper foil and I have never soldered something like this. Is there are right way of doing it? Do I need to somehow fix the foil before soldering? Or it should hang free off the inductor?
Copper foil should solder as easily as copper wire would. The only issue I could see is that the foil might conduct heat away rapidly enough such that your soldering iron might not be able to get the foil hot enough to melt the solder. A higher wattage iron would be called for, and the soldering should be done quickly so as not to conduct enough heat into the coil to damage it. An issue I see with foil inductors is that the self-resonance frequency could be quite low due the large amount of interwinding capacitance that the flat high surface area foil would have. Be sure you are using the inductor well below that frequency.
Thank you for quick reply @egellings. I'll give it a go over the weekend.
Regarding the self-resonance frequency, I am building a simple High-Pass filter in front of a tweeter. All audio frequencies that will be able to pass through the capacitor, i.e. pretty much everything except DC, will reach the inductor. Therefore I don't see that I have a choice in which frequencies it will be used.
Regarding the self-resonance frequency, I am building a simple High-Pass filter in front of a tweeter. All audio frequencies that will be able to pass through the capacitor, i.e. pretty much everything except DC, will reach the inductor. Therefore I don't see that I have a choice in which frequencies it will be used.
