Re: I've done the seaching, yet still have questions
Originally posted by splitz
Ok, I'm almost done with the aquisition phase of the system; now to the planning, I am trying to build my first ported box and need a few tips.
1. How far away from the inside wall should the opening of the port be ?
A: as much as the diamter of the port for minimal turbulence.
2. Does it matter what side of the box the port goes? (same side as the sub, out the side of the box, out the top of the box)
A: This point has been debated about a number of times. SOme people say that it sounds a whole lot better when the port is on the same side as the cones. I say put it where you thiink looks best.
3. On WinISD the smaller the diamater of the port, the shorter the length...why?
More air pressure, I'd imagine. Remember, too small a diamter, you'll get port turbulence. 35~40m/s is the max, I think.
4. Is there an advantage/disadvantage in using 2 ports vs. 1?
Less port noise (turbulence) but the port will have to be considerably longer.
One more thing, I understand that rounding the edges of the port cuts down on the noise, so is this worth the money?
A: For slot port, you can easily do this with a dremel (hand grinder) or rough sandpaper. If circular, then you're talking about flared ports. These are supposed to reduce it somewhat, and I suggest it.. it won't cost you an arm and a leg.
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