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In the Forum: Horn-Loaded Speakers
In the Thread: It's might be another project...
Post Subject: It is kind of ridiculous but it is what it is.Posted by Romy the Cat on: 10/18/2024
Antonis, I disagree with you that Jensen has no unnecessary
bends. Take a look at my image below. From point A to point B the horn has a
band that acts as a resonant chamber. The paths between those two points always
have their harmonics which are ever present and there is no way to eliminate it
from the horn sound. Also, I am completely against the concept that
this type of horn should have multiple bends. The only benefit of the bends is
to have longer horns. It would make sense to have longer only if a month of
the horn is larger as a result of the longer horn. In this specific
configuration the response of the horn is restricted by the size of the mouse
and longevity of the horn doesn't give any benefits besides creating internal
permanent resonances.
On the right side, you see the schematic
of my new corner horn. As you see it is made extremely simple and the back
chamber radiates into the hole which hits a corner. There is a red plate in parallel to the mouse
exit which does not exist in my horn but exists in Vitavox CN191 corner horn
which uses the same topology. Initially, I was planning to put these
plates in there but frankly speaking, I'm OK with how it is. I just know that
to experiment with the size, profile and proximity of this plate behind just
behind the mouth will take years and I do not have in me a drive to “improve” anything
as it is not my main system.
I absolutely insist that you take very seriously this paragraph. Although I very much insist that many multiband horns that I heard
sounded like crap, I do not insist that they sound like this because of the
bends. There are so many variables in corner-loaded horns you know I have so
little personal experience playing with them that all my ideas are purely
hypotheticals. When I glanced inside my new corner horn I saw that there were
no extra bends, only that made me decide to buy it. The rest is purely
accidental my reportedly-positive result does not prove anything but just delivers
my own comfort with my hypothesis.
There is another interesting aspect that I always have in the back of my mind. A
corner-loaded horn has theoretically unlimited mouse size and as a result, this
horn is perfectly topologically suitable to work with tone control. Not equalization,
which is horrible because you are closing your slope, but pure tone control, which
does not introduce facial distortions. You choose some kind of arbitrary
frequency, let's say 150 Hertz and you with a capacitor and two resistors
introduce anything under it let's say +2 decibels. Since the mouth of the horn
is “unlimited”, or effectively the size of your corner, then increment of your
horn output as a specific frequency perfectly makes sense, particularly with
a horn that is made with a driver of resonance 20-25 Hertz.
I would love to learn what constitutes
the quality of my current sound that is coming from direct radiator versus
corner loading. Of course, I did an experiment plugging direct radiation
and listening just corner loading results, exactly what Vitavox CN191 does. I hated
what I heard. The Vitavox uses a driver with 45Hz resonance, and I use a driver
with 25Hz resonance. I feel that Vitavox 15” driver is an order of magnitude more
interesting then this crappy Altec but when I put it into my corner corn I get
better sound from a driver but less interesting sound from my room. I was
thinking about it a lot trying to identify why and then failed to catch it and
decided to keep Altecs. The whole idea of my corner horn installation is that I
would like to drop it in the corner and not worry about anything else. I got
much more interesting results than I hoped for. I would like more people to
hear my corner horn and tell me why it is so peaceful. It is very interesting
as if I introduce better amplification or front end it does not sound
interesting. It sounds the best when I drive it from an objectively crappy sound
front end with five dollars integrated amplifier. It is kind of ridiculous but
it is what it is.
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