Disregarding math from published specs and spice model techniques. So in practice, at the breadboard using physical components. Would a cheap impedance meter be a good way to actually measure reflected impedance? Here is a link to a popular meter the TOA. It seems to work fine at measuring the impedance of a coil at 1000Hz. I have several used OPT that I acquired at swap meets, many of which have multiple secondaries. Unclear markings, etc. I understand that when a OPT has multiple secondaries you can mix and match them in series or parallel to make the most use. But when you do that you need to then know what your reflected impedance becomes. Since I'm not a spice wiz, nor a math wiz, I thought there must be a way to simply empirically measure my resulting primary impedance at 1000Hz? I know about turns ratios and the base formulas involved and that is great if you know the specs of your OPT and you are not using multiple secondary windings, etc. I don't currently own an impedance meter, but I think I need one now. Seems like it will make life much easier. My objective is to do this all from an empirical, physical, measurable way, free of spice or specs followed by a little match. How do I actually measure reflected impedance? Basically hook up my secondaries to intended speakers, then measure. Here is the TOA video, will this do it or any of the other inexpensive handheld impedance meters used by audio installers?

YouTube

YouTube

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