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Old 21st March 2014, 07:26 PM   #1
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Default On passive radiators regarding linearity

I am familiar with non linearity issues in piston drivers which I understand is due to inconsistencies in the magnetic field. Passive radiators which have no such motor structures would then be immune to such non linearities? Or perhaps does some such undesired artifacts still occur due to the suspensions?

If so, would push pull or opposing isobaric be a beneficial passive radiator alignment?

If not, could one design a 4th or 6th order band pass alignment with dual motors in push pull to mitigate distortion, then traditionally aligned radiators and be golden?
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Old 21st March 2014, 08:23 PM   #2
sreten is offline sreten  United Kingdom
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Hi,

Suspensions can be nonlinear and assymetric, just like drive systems.

So yes in theory, perhaps not in practice, hard to say.

rgds, sreten.
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Old 23rd March 2014, 04:55 AM   #3
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(It's not "If not")
Yes, traditionally that is done by manufacturers and DIY.
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Old 23rd March 2014, 05:53 AM   #4
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Quote:
Originally Posted by sreten View Post
Hi,

Suspensions can be nonlinear and assymetric, just like drive systems.

So yes in theory, perhaps not in practice, hard to say.

rgds, sreten.
Interesting, I would love to experiment. I'll start dreaming about my next PR system now.

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(It's not "If not")
Yes, traditionally that is done by manufacturers and DIY.
I was entertaining myself the other day in thought about speaker systems and put those pieces together. I have never seen or heard that specific combination being done before. Are you familiar with this particular alignment?
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Old 23rd March 2014, 10:21 AM   #5
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Originally Posted by Thetwinmeister View Post
I have never seen or heard that specific combination being done before. Are you familiar with this particular alignment?
...What particular alignment?!

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Old 23rd March 2014, 10:25 AM   #6
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Old 26th March 2014, 01:29 AM   #7
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Originally Posted by Inductor View Post
...What particular alignment?!
Hehe, I'm going to have to take a little more time going through all those references. I wish my free time was a little more abundant like it used to be.

Specifically I meant 4th or 6th order band pass with dual drivers configured in push-pull. Something about this strikes me as intriguing.
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Old 26th March 2014, 01:58 AM   #8
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Default 4th or 6th order band pass or push-pull

Well, but that has nothing in common with passive radiators (PR).
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Old 26th March 2014, 02:31 AM   #9
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Ah you are correct, I guess that was the original intent of this thread. Ultimately I wanted to know more about the linearity of PRs purely so I could imagine up interesting designs in my head focused on minimal distortion.

Maybe I should ask a more related question, which would have less distortion: A traditionally aligned PR or a port?
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Old 26th March 2014, 02:34 AM   #10
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I've read PPSL to reduce even ordered distortion combined with horn loading to reduce odd order may be the very best in the world of minimal distortion, but push-pull band pass is like a shiny light in a corner, me being a cat.
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