Originally Posted by audioarsonal
Just build it. Then test. That is the only real way to know what will work and how it performs.
I have a ported clam similar to Frankie's that plays consistant from 25-55hz. small port with a large chamber.
That is completely incorrect. If everyone just built and tested, there would be so many people out there that would have to keep building it over and over. Granted, a few lucky ones will actually like the sound, but I guarantee some of those are oblivious to what real sound sounds like and will not notice that something is not right.
Argue with me all day on this if you like....I will win the convo, trust me, but the point is, do not just build and test without some sort of goal that you try to aquire in the process. There are many ways to calculate now days, actual accuracy of a design well before any wood is cut, and Im not just talking about making sure its loud enough...Im talking about every bit of needed info on a design: excursion control, acoustical to electrical power efficiency for amplifier operation, response curve optimization, proper cutoff point, low level output for efficiency levels, resonance optimization for either specific frequencies or to control peaks and nulls in a response, environmental factor control within the response, proper placement and positioning of the enclosure output, phase correlation between the driver and port or mouth (depending on the type of design), smooth response control for correct timing, proper or acceptable impulse response again for smooth sound and timing accuracy, and many other factors not mentioned. Do you see how just building it and testing it is not acceptable?
These are the type of comments that I am trying to fix in this forum among the many threads in here. The fact that so many people here just rely on simple calculations of port characteristics and enclosure volume/displacement makes me upset. Not to mention that the "port characteristics" take no consideration to the driver parameters installed or the environmental factors that I have mentioned in a few threads already. So, please.....do not just build it a test it blind. if you want help....I can help you here.
We have already determined that you want a specific type of design, now lets figure out how to optimize it for you, ok?
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"Looks do not determine if the box will perform well, but a well performing box does make it look good"