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In the Forum: Audio Discussions
In the Thread: Macondo’s MiniMe or about Pilot Acoustic Systems
Post Subject: Port-O-GuessPosted by Lbjefferies7 on: 9/15/2008
The least offensive result I have gotten from a ported speaker was closest to the yellow option. I built a pair of small monitors with ports on the top purely because it was the only way they would fit. I cannot reasonably explain why the result was better, but they had the least "ported" sound while still gaining the extension of the ported design. They integrated themselves into the room better than other speakers I have tried. The new speakers that I built just recently ("teardrop" MTM's, paper cones, silk HF, 1st order crossovers) I built with replaceable backs. The first ported backs just did not work out, so now I have them sealed.
I would beware of the Red option. Ports act as filters and as the diameter goes up, you are more likely to encounter noise from higher frequencies. With your 4" mid-woofers, one or two ports of 1.5-2 inches would probably be better.
If you go for the Green option, you might consider putting a 90 degree bend in them so that they point either upwards or downwards in the enclosure. This is in hopes to eliminate direct higher frequencies from the drivers.
Hope this helps.
Sincerely,
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