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Multi-Way Conventional loudspeakers with crossovers

Dayton Audio PA380-8 15" Pro Woofer impedance spike at 40hz
Dayton Audio PA380-8 15" Pro Woofer impedance spike at 40hz
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Old 16th September 2019, 02:09 AM   #1
awdtalon21 is offline awdtalon21  United States
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Default Dayton Audio PA380-8 15" Pro Woofer impedance spike at 40hz

Why does this Dayton Audio PA380-8 15" Pro Woofer have an impedance spike of 300 around 40hz? When designing the crossover is there a way to get the spike down, or does it even matter?

thank you.
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Old 16th September 2019, 02:22 AM   #2
Pano is offline Pano  United States
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Dayton Audio PA380-8 15" Pro Woofer impedance spike at 40hz
It doesn't matter. All woofers have a peak at their Fs. Put it in a bass reflex box and you'll have two peaks.

The peak won't effect your crossover unless you are crossing very, very low. You aren't, are you?
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Old 16th September 2019, 07:26 PM   #3
daemonsgr is offline daemonsgr  United Kingdom
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maybe read these: (`I did too as I was gathering knowledge)

The Crossover Design Cookbook Chapter 3: Speaker Motors and Crossovers

TA Speaker Topics - Neutralizing L(e) with a Zobel

Of course following what Pano said.
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Old 16th September 2019, 11:23 PM   #4
GM is offline GM  United States
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Quote:
Originally Posted by Pano View Post
The peak won't effect your crossover unless you are crossing very, very low.
In which case one needs a series notch filter : Series Notch Filter Designer / Calculator

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Old 17th September 2019, 12:49 AM   #5
John Busch is offline John Busch  United States
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Actually, the resonance peak is around 32 Hz. Nothing to worry about. Have purchase quite a few and they, so far, have been very consistent and very close to spec.

The peak is of little or no concern when properly used in either a vented or sealed box. Can even be used in an open baffle. How do you intend to use this driver?
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