Done quite a bit in my past.Alright I guess ill have to play around with some trial and error
i'm a relatively small guy...u know that...Keep your hands in sight big guy...//content.invisioncic.com/y282845/emoticons/nono.gif.eca61d170185779e0921b0faa9704973.gif
how do u calculate the reynolds number...the same way for an airfoil?Compression = impedance rise. Compression includes any kind of possible loadings such as corners or angles that would create turbulence. To lower the impedance rise, the enclosure must be designed more as a wave guide. On an aerodynamics standpoint, a low impedance rise box will have a Reynolds number of 2300 or lower. Just think about an aerodynamic car...low resistance, low impedance. Let me know if you need an even more detailed explanation.
Tuan
I did a tutorial for this a few years ago...I don't know where it is on my computer....but here:i'm a relatively small guy...u know that...
how do u calculate the reynolds number...the same way for an airfoil?
Alright I understand better now. Impedance rise is not everything and I am focusing to much on it. I thought it was alot more important than it really is. So basically high rise DOES NOT equal low output, its more a combination of rise and efficiency that determines a box's output characteristics.Your view of impedance rise is like many others who think that it will kill the performance and high rise equals low output. This is not true at all as these spots of high impedance are the resonant points of the system (the points of greatest efficiency). That is why a sealed box can have a flat response even with an impedance rise of more than 30ohms at certain frequencies and be back to 4 for others.
And if you want to make an enclosure with a very flat impedance curve, you have to build a correctly designed and tuned transmission line. Done correctly, they have very flat impedance curves but that doesn't mean that they're loud. It had much better benefits than that.
Output is more determined by the efficiency of the enclosure/sub combination and how effectively it couples with the environment. Power plays a very small role in that game but does matter.Alright I understand better now. Impedance rise is not everything and I am focusing to much on it. I thought it was alot more important than it really is. So basically high rise DOES NOT equal low output, its more a combination of rise and efficiency that determines a box's output characteristics.