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<blockquote data-quote="Mark Wilkinson" data-source="post: 209132" data-attributes="member: 8989">Hi Max,Art and David have forgotten more about speaker building than I&#039;ve learned yet, and the only reason I&#039;m chiming in is because i have a pair of 3TX.&nbsp; I&#039;d happily share picts and dimensions of the box, but since it is a current commercial product, I don&#039;t feel that information belongs to me to give away.What I do think is fair to say, is that the guys&#039; information on how shelf ports work is reflected by measurements I&#039;ve taken.(I tried setting up a 3TX with active x-overs for a learning exercise..... <a href="http://forums.prosoundweb.com/index.php/topic,164582.0.html" target="_blank">http://forums.prosoundweb.com/index.php/topic,164582.0.html</a> )I can also say I&#039;m not so sure when you call a design a ported box, or when you call it a transmission line.....I think it gets hazy based on the actual port geometry....</blockquote>

[QUOTE="Mark Wilkinson, post: 209132, member: 8989"] Hi Max, Art and David have forgotten more about speaker building than I've learned yet, and the only reason I'm chiming in is because i have a pair of 3TX. I'd happily share picts and dimensions of the box, but since it is a current commercial product, I don't feel that information belongs to me to give away. What I do think is fair to say, is that the guys' information on how shelf ports work is reflected by measurements I've taken. (I tried setting up a 3TX with active x-overs for a learning exercise..... [URL]http://forums.prosoundweb.com/index.php/topic,164582.0.html[/URL] ) I can also say I'm not so sure when you call a design a ported box, or when you call it a transmission line.....I think it gets hazy based on the actual port geometry.... [/QUOTE]

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