Printable View
Hi Guys
I want to upgrade the inductors in my ML speakers, I know the inductance 2.5mH but I have no idea of the DCR. Having done some research I understand that the DCR is crucial. However, it is not available. There are no markings on the installed inductors so I have drawn a blank there.
I would appriciate your thoughts please.
Many thanks
Regards
Bill
If you know the wire gauge, then you can measure the inductor cross section and core size, then look online for the length of that wire required to produce a 2.5 mH inductor of those dimensions. I'm supposing that info is available. If it is, then see if you can find the DCR for that length of wire somewhere, I reckon it should be available, probably on one of the speaker building sites.
You can measure it with a standard multimeter, but not to great accuracy if it is fractions of an ohm.
A more accurate method would be to put a known current through the inductor, say 1 amp, then measure the voltage across the inductor with the millivolt range on the multimeter.
For every millivolt on the reading that is a milliohm of resistance.
if your feeling flush treat yourself to the dats v2 software,it has built in capacitor,inductor and resistor measuring software.