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In Reply to: RE: Magnepan 2.5R crossover help posted by neolith on April 23, 2015 at 10:36:31
The tweeter is more sensitive than the midbass panel - we guestimated a 5-6 db difference - so the Bode diagram understates the tweeter's contribution since despite the 2 ohm resistor its output should be at about the same level as the midbass panel.
So the lower XO from the higher val cap should be more pronounced than the Bode diagram shows.
Follow Ups:
I mentioned that the Bode diagram was probably not an accurate representation of the actual speaker output, but I fail to see why a change in the cap would be more apparent with a more sensitive speaker. The crossover point would be lower with a more sensitive speaker but the relative shift with a change in caps would be unaffected. Am I missing something?
BTW, I found a small error in my spreadsheet and in fact the output curve is shifted upward in the with the larger the cap. Mea culpa.
But it would make the difference more noticeable than the bode diagram would indicate. Hopefully it is just enough to partially fill the dip in his response so it would be a bit smoother.
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