Enclosed are files of a VituixCAD simulation of a notch filter and a Zobel element - I want to tame the breakup modes of an actively driven Purifi PTT6.5X04-NAA-08 6.5” aluminum midwoofer. Is my approach okay? Thanks for your contribution!
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If you've used the 0 degree axis measurement then it may be overdone in the bigger picture. Were you planning to listen on that axis?
Overdone in which respect? I the used 0° axis measurement provided by the manufacurer.The speakers are angled to the listening position, so more or less 0°.
It's difficult to see with the coarse polars shown, but the variations between the angles above 3k suggest the 0 degree axis doesn't agree with driver power. The 0 degree axis is relatively insignificant.
I would probably choose to keep it well down above 3k, but your decision might depend on what you cross to and how.
I would probably choose to keep it well down above 3k, but your decision might depend on what you cross to and how.
It may be that for me (no native English speaker) something is lost in translation ... I'm only interested in getting as little as possible of the break-up modes into the audible range. In my example I try to cut at 1.2KHz with 18dB acoustically resp. 12dB electrically.
I may be dealing with a less practical than academic problem here ...
I may be dealing with a less practical than academic problem here ...
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