![]() ![]() It is intended as an implementation of Bob Brines' design procedure as outlined in the " Port placement in a straight MLTL" thread on DIY Audio and a first draft of a speaker design. It is aimed at the DIY speaker designer who is already familiar with MathCad and able to work with Martin J. This page is intended as a "Getting Started Guide" for MLTL design. ![]() For details, as well as other options for how to obtain MathCad, see Martin J. If you do not have access to MathCad, MathSoft makes a MathCad viewer available, which allows you to work with the programs and perform all the needed simulations. King, Mass Loaded Transmission Line (MLTL) speakers are now relatively straight-forword to design for the DIY audio enthusiast. Thanks to a collection of MathCad programs developed by Martin J. However, rather than engaging in a lengthy discussion on naming conventions, I will use the term MLTL to describe a ported quarter-wave enclosure. Now, some may argue that this is a bass reflex enclosure - and the line is indeed a bit blurry. Basically, an MLTL is a quarter-wave transmission line enclosure with a port. There are several types of transmission line enclosures and one of the more popular ones is the mass loaded transmission line (MLTL). Quarter-wave transmission line speakers employ enclosures that are tuned to provide low-frequency extension for the speaker driver. ![]() Purifi 1ET400A / Hypex NC500 Input Buffer ![]()
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