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In Reply to: RE: Polarity reversed in 2.7 QR tweeter posted by Satie on June 14, 2015 at 15:40:54
Well, as mentioned in the other thread, this is one of those models they (Magnestand) alter from 3-way to 2-way. They simply wire the mid and tweet in parallel. That means the tweeter is driven nearly a full octave lower in frequency than it would have been otherwise. This is a QR tweeter so it will tolerate it from the power perspective, but it does create a rather different acoustic integration. How well it works in this case I'm not sure.
It seems to me PG's crossover guy never veers very far from textbook electrical alignments of the series networks. The schematics I've seen are all like that, but I haven't seen all of them.
Cheers,
Dave.
Follow Ups:
That is also something he also tried with the 3.6 using the mids and bass together into a 2 way and there was a particular angle in which it came together. Sweet spot was narrow. I think this makes the 3 ways have the same dispersion problem the 2 ways had as the tweeter is now far from the center of the mid (and now also bass) panel.
I guess the next logical step would be to just wire all three drivers in parallel to implement the full mechanical crossover. :)
I don't think there's any particular design discipline at work at the Magnestand factory. That's okay though and could be said of quite a few speaker manufacturers. This is not rocket science and many non-technical folks can achieve pretty good results.
Dave.
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