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In the Forum: Horn-Loaded Speakers
In the Thread: Macondo’s lowest channel.
Post Subject: There are many key points….Posted by Romy the Cat on: 9/21/2010
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 jessie.dazzle wrote:
Romy wrote:
"...I think the key factor would be the degree to which the driver is able to decimate the LF pitches..."

Pitch: The property of sound that varies with variation in the frequency of vibration.... I decided to look it up and double check my understanding of the word.

Ironically my misspelling and use the word “decimate” instead of “discriminate” (the automated check speller always do it to me) did not change the meaning of my statement too much. We all undusted that a large cone diameter and high exertion imply high pressure at LF. Still there are other considerations that I find are superbly important to me. The discrimination of pitches is one of them for instance. Most of the woofers do not have high discrimination (recognition of differences) between similar notes. If you have an upper bass in your hands then you hardly will be able to take two notes that would have the same character. Many woofers however do not discriminate those characters and   play all notes as some kind of generic LF note.  All ported speakers sound this way and many other topologies, particularly badly implemented. My Sunfire cube sun that might literally destroy my house with acoustic pressure is always produces just one single LF note – it is not a generic note – it is literally one single LF tone – no matter what was given to it. Another of many factors that are superbly important to me is an ability of the bass driver to demonstrate bass contrast while the driver is stressed. Many drivers produce OK slam from silence but very few of them can do the same from elevated sustained tone. Let for instance an orchestra to hold high volume sustained tone (pedal point) and then you have a bass event. The contrast and texture with wish this superimposed bass event is presented by bass channel says a LOT about the driver and its enclosure.  The way how the driver plays at very low dynamic levels is also is very important. Many big powerful bass drivers with very powerful motors have very strong own outer suspension to assure that the driver will be able to handle this motor’s force. This super strong outer suspension make the driver do not comply well to an excitement by low currents…. I mean I can go on, there are many key factors but I still think that the decimations of bass event encompassed a LOT. In some cases it is not a driver it but the way how it used: enclosure, damping, amplification….
 jessie.dazzle wrote:
To Southeast Michigan (a suburb north of Detroit); you know, a crisis is a terrible thing to waste!

Yes, driving a Peugeot for a couple years would do it to a person... :-)

The Cat

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