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Multi-Way Conventional loudspeakers with crossovers

Is it possible to cover the whole spectrum, high spl, low distortion with a 2-way?
Is it possible to cover the whole spectrum, high spl, low distortion with a 2-way?
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Old 17th September 2019, 06:33 AM   #3071
Ro808 is offline Ro808  Netherlands
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Old 17th September 2019, 06:45 AM   #3072
cdm is offline cdm
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Originally Posted by Ro808 View Post
Woofer is indeed TAD 1601, Horn is JBL 2386a and the 2" compression driver is a Sony SUP T-11, at least in the original version.
Thank you very much, Ro808. You´re better than Wikipedia! Do you happen to know (heard) the Strauss? And if yes, is this a sound, that camplo should seek for his endeavour?
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Old 17th September 2019, 07:10 AM   #3073
docali is offline docali  Germany
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@whg and @mabat probably talk of different things?

If we look at the situation of water in a rotating glass then we have the boundary potential of a cylinder like this:

M-60 | Zentripetalkraft: Rotiere... | Vorlesungssammlung Physik

We can see that the water will run over out of the glass at a certain rotational speed and a paraboloid is formed. So, it does not approach a cylinder. But if the potential is infinite (a glass with infinite height, the whole fluid approaches a cylinder for infinite rotational speed. But then we do not have a "simple" paraboloid equation anymore.

The best thing would be that you agree to echother of having talked about different things
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Old 17th September 2019, 07:28 AM   #3074
mabat is offline mabat  Czech Republic
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Ro808
Please bear in mind how all these curves (i.e. circle, ellipse, parabola, hyperbola) originate. They are not called "conic sections" for nothing: Conic section - Wikipedia
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Old 17th September 2019, 07:39 AM   #3075
GM is offline GM  United States
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Finally! Something that gives me a clue what this sub-thread is all about! Thanks!

Sheesh! Ya'll had me feeling dumber than a box of rocks.

GM
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Old 17th September 2019, 08:14 AM   #3076
David McBean is offline David McBean  Australia
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Originally Posted by mabat View Post
That is the definition of "approaching" to something, it must converge in total. The limit of the rate of change itself is not enough.
As in the attached simple example, which plots the expression y = x / (1 + x). The value of y approaches the asymptotic limit of 1 as x is increased, and y can never exceed 1.

A parabolic curve does not exhibit this limiting behaviour.
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Old 17th September 2019, 08:27 AM   #3077
mabat is offline mabat  Czech Republic
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David, as you may have read, "What becomes limited is slope, and radius of curvature. So, the limit on y criteria, is a bogus argument against the cylindrical limit claim." - You have to be better than that
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Old 17th September 2019, 08:30 AM   #3078
David McBean is offline David McBean  Australia
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Finally! Something that gives me a clue what this sub-thread is all about! Thanks!

Sheesh! Ya'll had me feeling dumber than a box of rocks.

GM
It has indeed morphed into a very interesting philosophical discussion.

I am now somewhat regretting having innocently raised the subject of parabolic horns in the first place... :-).

Is it possible to cover the whole spectrum, high spl, low distortion with a 2-way?
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Old 17th September 2019, 08:38 AM   #3079
David McBean is offline David McBean  Australia
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Originally Posted by mabat View Post
You have to be better than that
I give up - I have run out of ideas :-).

Besides, I think that we have probably just about beaten the subject to death by now. I am starting to feel quite sorry for all those genuine cylindrical parabolas out there...
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Old 17th September 2019, 09:34 AM   #3080
whgeiger is offline whgeiger  United States
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Originally Posted by mabat View Post
Actualy, no. For a cone the area grows much faster, with the square of distance. This is really the parabolic expansion
You guys are addressing the obvious increase in y but do not want to address the unintuitive fact that slope and curvature are approaching zero in the limit for a paraboloid. Anyway, we are leaving the casino now, $13,800 richer than when we came. So despite the unpleasant experience I have had here, I can say goodbye with a smile on my face, anyway. WHG

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