![]() He is already hard on work on his next article.īesides this site, there are 2 other web-sites that are required reading for anyone interested in building a TL. He is slowly publishing easy-to-design alignment tables for subsets of QW space - his 1st is the alphaTL, published in audioXpress, and in the queue for his section here. *(Bert Doppenburg's BD-Pipes are an example of a successful ML-TQWT developed in a true cut-and-listen path - an independent validation of the design IMM)Įxolinear is Rick playing around with Augspurger's model in the fringes of this space. These designs are a rich new breed of QW designs. Martin's software can model modestly complex lines from tapered TLs to tapered pipes - most of the projects on the net* that have their basis in martin's software are actually ML-TQWTs or ML-TLs (ML = mass-loaded). Martin has also made some quick alignment tables available. There are a number of very detailed papers with practical examples, and a downloadable MathCad TL model. ![]() Martin makes versions of his software accessible for the hobbiest. Anything along one of these axis can now be modeled fairly accurately, and there is all the space in between that is largely unexplored. Think of t-lines, horns, & TQWTs (aka TQW or Voigt Pipes) as (some of) the axis for a space of possible designs. Martin King 's & Auspurger's computer models for 1/4 wave speakers have opened up a huge amount of space for exploration. Rick Schultz (Exolinear) uses Augspurger's software for his designs (the Rhino pre-dates this) and working with Martin King they have shown that Augspuger's model and King's model are in close agreement. I find it confidence inspiring that two guys independently, with two different analogs, at the same time come up with software models that generates the same lines under the same conditions. Before i attended this conference, Martin King had contacted me about his work on modeling TLs.Īugspurger's electrical TL model generates lines that are in VERY close agreement with Martin J. George's work can be seen in his original AES paper, the revision of that in a later AES Journal article (my pick if i could only have 1), and in his 3-part audioXpress article. I was present at the AES seminar when Augspurger let the world know what he has found out. The result of this is that there are a cooresponding range of opinions and assertions about the performance of TLs. Up until the recent work of Augspurger & King, there were no models that came close to describing the behavior of the TL and it took a lot of cut & try, luck, and refinement to get a good TL. I currently support myself recycling hifi on eBay, servicing & selling Macintoshes, doing websites & graphics, and building a few custom speakers. After that i went to work in hifi, then computers, now i'm back doing a mix of stuff. I built my 1st tline in 1975 inspired by the Radford S90 when i was finishing up an honours degree in Mathematics. there are many projects and articles sitting in my queue - enuff to at least double the size of this site. ![]() ![]() I am always way behind getting stuff up on this site, because i just don't have the time i'd like to devote to it. It's prime theme is T-Lines but i'll put up anything (hifi related) that i am interested in. It sort of marks my return to serious interest in HiFi after a 15 year absence (i spent 9 years in the hifi business in the 70s & 80s). It started out as a question to the basslist with a single page and has grown beyond my wildest dreams. The T-Line Speakers site is my hobby site.
0 Comments
Leave a Reply. |