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In the Forum: Horn-Loaded Speakers
In the Thread: If you were to start from scratch, what horn system would you build?
Post Subject: System topologyPosted by haralanov on: 2/12/2012
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Yes, the topic is really interesting, at least to me. There is one thing
for sure – the man who starts the development of his acoustic system with a blank
sheet of paper, must have a lot of experience in arranging different channels
in terms of psychoacoustic integration. If
I had to build a horn loaded system from scratch, then I will use my upper bass
channel very carefully in order to fool my brain there is no upper bass
channel. After a lot of experiments I came to the conclusion that the upper
bass channel should have 4 (!) drivers arranged symmetrically around the
main/midrange channel. This creates very interesting effect of having very big,
at least 50-60" midrange channel, but the interesting part comes from the fact
that the size of that channel can vary from psychoacoustic point of view (it is not fixed size) according to the reproduced
material. If the instruments are big, it recreates them with their real physical
size and authority, no matter how big and
massive they are, but when they are smaller, it does not make them artificially
big, but it uses its own programmed intelligence, smartly keeping their size correct.
Here is how I see it:
The 36 and 44” horns use slightly different sounding drivers (in order
to achieve more interesting tone). This "rule" applies also to the 28 and 30”
horns too. The 28” horn should use driver with slightly faster suspension. This
configuration achieves very high tonal complexity in the upper bass range and
at the same time the listener is completely fooled ALL of the sound is coming
from the midrange horn. It is possible only because the human brain is not
perfect computing device and it could be fooled quite easily, if one knows WHAT
to manipulate in sound.
Take a look at the next picture:
Do you see any blinking spots? Congratulations! :-)) Well, you reader just realized you can't trust your own eyes! Use this fact and find how you can fool your ears. It all up to you! That’s why one
needs more (strategically arranged) drivers for his upper bass/ lower midrange
channel.
All the best,
Haralanov
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