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Multi-Way Conventional loudspeakers with crossovers

Turning a 2-way into a 3-way
Turning a 2-way into a 3-way
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Old 21st July 2019, 10:38 AM   #41
Mario Pankov is offline Mario Pankov  Europe
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Turning a 2-way into a 3-way
I don`t like parallel notches in general. I think they degrade the sound too much.

There is another solution but will likely cost me like EUR 50 if it fails The phase shield is added to prevent an acoustic null at around the same frequency typical for hard domes. I think that if I cut it off it might solve the problem, or create another one.
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Old 21st July 2019, 10:53 AM   #42
Zvu is offline Zvu  Serbia
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If you can measure up to 30-40kHz feel free to take the phase shield of. You can always add a small series notch to tame the tweeter resonance.
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Last edited by Zvu; 21st July 2019 at 10:55 AM.
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Old 21st July 2019, 12:26 PM   #43
Mario Pankov is offline Mario Pankov  Europe
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Turning a 2-way into a 3-way
The phase shield is not there to prevent the dome resonance. Sound travels at much higher speed in aluminium than in air. The outskirts of the dome radiate in opposite polarity to the center of the dome at some high frequency, for this one I think its around 14-15Khz and this causes a deep dip (null) in its response. The phase shield solves this but in this case it may be unnecessary. Until I cut it off, I won`t know unfortunately...
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Old 21st July 2019, 01:23 PM   #44
Zvu is offline Zvu  Serbia
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Not only to mitigate some of the effects of a dome resinances, but in Seas it does some of that as well. My post was meant if the resonance becomes visible or worse when you remove the phase shield. Other positive sides of removing the phase shield and treating the dome resonances are also explained. Check the Tafal loudspeaker and its writeup. Measurements of Seas before and after the removal of it.

Tonfeile Tafal - Selbstbau Lautsprecher - Visaton Al 130 - Seas TAF 27 - Frank-Landmesser.de
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