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In the Forum: Horn-Loaded Speakers
In the Thread: Macondo’s Midbass Project – the grown up time.
Post Subject: If everything goes as I planed....Posted by Romy the Cat on: 9/16/2010
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Robert, I understand what you say. Unfortunately this boat had sailed. I did not think about it from beginning and if I did then I would put into the design some decoupling provisions. At this point there is no time and there is not design margins what I would be able to squeeze any reasonable decoupling mechanism. I might devise something but it would dearly the hoisting the horns up. I would like not to delay as I would like to get over with it already. This one I have screw up. Bad for me, a lesson for someone who go after me.
You wrote: “I don’t think the mechanical vibration of your horns will be a significant problem.” I receive a number of emails when people expressed similar sentiments. It is possible that you are right and considering the mass of everything (horns, frames etc…) the bone-transmitted vibration will not be a problem at all. At this point it is hard to guess. My only hope that the SUSPENDED floor in my listening room will be the one that might decouple me from the house frame. Will see how it goes.
In the end – your example of airborne bass from that boom box on wheels is not accurate. I wrote much time about the subject of acoustic pressure vs. tonal pressure. Bass section with large amount of distortions (many of them have 60%-90% of distortions do produce airborne vibrations, something that I call “chest pressure”. The bass that I am looking for has absolutely no resemblance with chest pressure bass. If everything goes as I am planing then even at extra 6dB-9dB of additional tonal pressure I will not have elevated airborne chest pressure.
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