OP,
So, positive polarity means a + voltage causes the driver to move towards the listener and away from the cabinet.
A speaker designer may need to flip the polarity of individual drivers to get the correct frequency and phase alignment across the crossover region. It is rather rare for a flat baffle, multi-way speaker to get the drivers all lined up in positive polarity.
When this happens the convention is to wire the largest driver, the woofer, in positive phase, and then flip drivers going upwards as needed to align with the next driver down.
For instance, almost all 2-way speakers end up with the tweet reversed. My LM-1 however happen to have aligned in positive phase.
https://speakermakersjourney.blogspot.com/2016/02/the-lm-1-bookshelf-version.html
But this was a result of a great deal of luck with driver sizes, location, and crossover design.
Best,
E
So, positive polarity means a + voltage causes the driver to move towards the listener and away from the cabinet.
A speaker designer may need to flip the polarity of individual drivers to get the correct frequency and phase alignment across the crossover region. It is rather rare for a flat baffle, multi-way speaker to get the drivers all lined up in positive polarity.
When this happens the convention is to wire the largest driver, the woofer, in positive phase, and then flip drivers going upwards as needed to align with the next driver down.
For instance, almost all 2-way speakers end up with the tweet reversed. My LM-1 however happen to have aligned in positive phase.
https://speakermakersjourney.blogspot.com/2016/02/the-lm-1-bookshelf-version.html
But this was a result of a great deal of luck with driver sizes, location, and crossover design.
Best,
E