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Recently my brother was visiting (he's from out of town) and he asked for an opinion regarding how he could improve the sound from his flat screen TV. I'm always ready for a new project, so his question sent me in search of a small bookshelf type speaker that would fit into his home entertainment shelving system. Seeing the wide popularity of Paul Carmody's Overnight Sensations, I decided to build a pair for my brother, and while I'm at it, a pair for me.
My brother's speakers will reside inside a cubical cavity, open only in the front, with some sort of grille covering the opening. The frame for the grille leaves only a 13 1/2 X 7 1/2 opening, and that is covered by grille cloth.
From all that I have found to read on the topic, port placement generally isn't critical. I have also read a front port could emit low level, unwanted mid-range sound. Maybe audible, maybe not. As I recall, the bottom line was that a port could be in front, but there existed a very small risk of the mid-range sound causing a difference. That slight possibility would be enough to make be stick to the rear port if there isn't any good reason to place it in the front, because I've learned the hard way that small things can accumulate with other small things, and together, well you get the idea.
And that leads me to my question: Is there any benefit to a front port in this situation? Is the closed cubicle likely to produce a bit of annoying booming bass? Which arrangement would you go with?
Looks like the drawing didn't convert to a jpeg very well. The gradients turned into weird stripes. Unless you like it of course, then it was intentional...
My brother's speakers will reside inside a cubical cavity, open only in the front, with some sort of grille covering the opening. The frame for the grille leaves only a 13 1/2 X 7 1/2 opening, and that is covered by grille cloth.
From all that I have found to read on the topic, port placement generally isn't critical. I have also read a front port could emit low level, unwanted mid-range sound. Maybe audible, maybe not. As I recall, the bottom line was that a port could be in front, but there existed a very small risk of the mid-range sound causing a difference. That slight possibility would be enough to make be stick to the rear port if there isn't any good reason to place it in the front, because I've learned the hard way that small things can accumulate with other small things, and together, well you get the idea.
And that leads me to my question: Is there any benefit to a front port in this situation? Is the closed cubicle likely to produce a bit of annoying booming bass? Which arrangement would you go with?
Looks like the drawing didn't convert to a jpeg very well. The gradients turned into weird stripes. Unless you like it of course, then it was intentional...
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