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In the Forum: Horn-Loaded Speakers
In the Thread: Impulse response, short notes and midbass horns.
Post Subject: How to test vibration vs. re-entry?Posted by Romy the Cat on: 6/20/2011
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 unicon wrote:
Bass FRQ have enough power to vibrate horn mouth and constructional area nearby them.
 use a chip contact Mic in your horn mouth n monitor how does it vibrate
Remember the time I insisted for having access to your midbass horn driver screws ?
I left a threat also with graphs showing how loosening to tightening the screws can change the impulse response ...

It is possible; I think it is unlikely but possible. Still, I do not have and you did not propose any methodology that would distinctly differentiate the prolong decay from vibration vs. a prolong decay from re-entry of the room reflections.

If you are right about the vibration nature then it might be so that loosening to tightening screws might affect something but unfortunately my horns do not have those proverbial screws. The whole idea of the construction techniques that I used eliminated the “screws” that hold anything. It is rather a bulk construction of layers of plywood and wood beams that are all glued in mass to create one more or less uniform assembly. The thing does has hundreds screws in itself but the screws do not hold anything but they rather the tight the surfaces temps unit glue take over. Many of those screws were removed after glue was solidified, so there in no main set of power scow or bolts that I might lose or tight.

The caT

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