I have a speaker question that I'm struggling with. I have a pair of Yamaha NS-A636s that I've been working on. You guys gave me some great advice on these units a few years ago and the speakers sound worlds better. The mods you suggested transformed them into entirely different speakers.
My question is this... The speaker is a three-way unit, rated at 8 ohms nominal. All three drivers are listed as 8 ohms. When I took the speakers apart, I could see how they were wired. They were not wired in series. Each speaker was wired, separately, to the speaker connector that attached to the outside back of the cabinet. So, that would mean a parallel wiring. According to my understanding of how ohms work, how could this wiring arrangement lead to 8 ohms total for the speaker? My calculation shows the speaker should be 2.66 ohms. If I were to wire the speaker in series, I should have a 24 ohm speaker. So, how can the speaker be rated at 8 ohms nominal with three drivers in parallel?
My guess is the caps used for the tweeter and midrange? How much do the caps change things up, if they do? The tweeter uses a 1.5uf cap and the mid uses a 5.2uf cap. Are those caps playing a role in raising the ohms from 2.66 to something closer to 8 ohms? Or am I missing something?