With this project I wish to attain acceptable quality for low price.This page details the build of my Quatro 12 powered subwoofer. The point is, given the distortion of the TDA2003 amps, why using expensive speakers. Even with no baffle they were better than some supposedly "Hi-Fi" speakers. Despite the charts, I've tried these speakers with a temporary open baffle made of expanded polystyrene and they sounded good. Note: Please note that I'm aware that the efficiency of these particular speakers is low and that they "have no bass". Is there any particular diameter and length I should use to fine tune the frequency, or the port diameter doesn't affect at all, as long as the port has the matching length?
Plus, the software gave me several port lengths for several diameters, as such: Is there any website with examples on port alignments for ported designs? What are the main differences? I need someone too see if anything is wrong, or if I'm choosing the wrong design.Īlso, I don't know what SBB4, QB3 or SC4 means in terms of port alignment. I double checked this values using the basic car audio electronics website. So far, SC4 is the most adequate alignment. Besides SBB4 gave me a value of 3.14 litres, too small and QB3 gave me a value way too large. The box should be suitable for all kinds of music, and therefore should have the flattest response possible.
Indeed it enhances the bass, but only to the 0bD level (exacly what I want). This alignment gave me the flattest frequency response and a reasonable enclosure volume. Using the calculator (from ) I came to the volume of 6.31 litres for a SC4 alignment. I concluded that a ported enclosure would be better suited. The speakers I'm using are Visaton models, the FR10 4OHM models, and have the following characteristics: However I want to do this in a decent manner. I'm calculating a speaker enclosure for a multimedia speaker project of mine.
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