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In the Forum: Horn-Loaded Speakers
In the Thread: The Kato-san's Goto system
Post Subject: I do not think anybody needs it.Posted by Romy the Cat on: 5/23/2017
Josh, I do not have a
definitive answer to this question with witch I feel comfortable. I need to say
that I had a multiple experiments in multiple audio fields and I always felt
that excessive or too limited magnetic force is not always complimentary and it
should be a proper balance between magnetic force, suspension, moving mass, damping
methods, driver loading mechanically and electrically. So, if you take under consideration
and formulate an absolute perfect magnetic force per a given environment then
you very soon discover that this “absolute perfection” is achievable only for a
single point in frequency response. An octave upper or lower you are not in
ultimate magnetic force vs environment ratio. Well, it is very similar to many
other moments in audio.
Answering the question you
ask my speculation would be that here we have in place a phenomena of a moving
mass projected to minimum currents. To drive ultra-low mass HF diaphragm you
need a few mV and the diaphragm exert pretty much with no mechanical inertia.
To drive a bass driver with the same minimum voltage you face much larger
excursion of diaphragm and consequentially you face much heavier voltage rollback
from the diaphragm pulled back by suspension. So, we flood the bass driver with
more power (same voltage more current) to flood a driver with amp loading. To a
degree the effect goes away in you runs positive feedback in the amp and drive
the amp with a negative impedance, then you can magnetize the driver as much or
as little as you wish: the effect will me much less prevalent. Well, to a degree you can mitigate the effect of
overly-manganesed bass drivers by idling the driver loading (by the amp) but I personally
did not make those experiments and for me it is pure hypothetical presumption.
I think it should be difference between properly magnetized bass
drivers and over magnetized bass driver but idled loaded. It should be similar
to dropping VTF for .2g and changing at the same time VTA for a degree. But is
it impossible to foresee how it will be in case of a given compression driver. Unfortunately
I do not see any serious bass compression drivers users out there who would go
for sensible bass compression drivers experiments. I do not particularly blame
them as it is a hugely expensive and very time intensive labor of love that
will hardly bring any gratification besides the admiration of a few obscure audio
lunatics, like me.
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