The other reason was, as I told you last time, that there are at least two different kinds of enclosures that - despite their design and functional differences – have been given that same name. One of the reasons for that was simply that there was so much other information that had to be delivered to put the transmission-line enclosure in perspective and to make it comprehensible both in terms of how it works and as relative to other speaker enclosure designs. In the course of that, I’ve mentioned – and even promised to write about – “transmission line” (“TL”) enclosures a number of times, but never yet actually done so. In the course of that, I’ve written about enclosure types ranging from just a simple (huge) board to sealed boxes (both of the previous being, if the board or the box are big enough, called “infinite baffles”) to small sealed boxes (“air” or “acoustic” suspension systems) to bass-reflex systems of various kinds (simple, “tuned-port” and “distributed port”) and “resistive port” systems that act more like leaky sealed boxes than bass-reflex systems. In the last several parts of this continuing series, I’ve written about why speakers need enclosures to make bass, instead of just for cosmetic appeal. SHARES Twitter 410 Facebook Email Print LinkedIn Pinterest SMS WhatsApp
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