I had the awesome opportunity of taking the EE423 Speaker Design class offered at USC while I was going to school there. The class is taught by engineers from JBL, with some help from people like Tom Holman (the TH in THX guy!), who happens to be a researcher at USC. I learned a lot about speaker design, and ended up with a pretty awesome pair of bookshelf monitor speakers. The speakers use Vifa TC14SG49-04 5.5″ midwoofers and Peerless 53 NDT Neodymium 1″ tweeters. The inital boxes were prototyped in cardboard. Despite looking absolutely terrible, using 3 layers of sandwiched cardboard actually works extremely well in terms of audio response. Here you can see a diagram showing the 200-10 khz response (tweeter is thin line, midwoofer is thicker…
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