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T-Line 101?

BKr0n

Senior Member
Joined
Sep 6, 2023
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I've been watching Hexibase again recently. Very cool designs with varying orders/degrees of acoustic suspension and t-lines. I see things like fluid-dynamics, mechanical inductance/impedance, and wave guides, and while I know a little about each, I still think I'm missing a lot here, enough that I don't even know the right questions to ask. Where would be a good place to start learning how to design things like this? Also, apparently hornresp is the predominant tool to use when designing one. Is this just because its free or does it do something better than software like matlab?
 
Oh, and speaking of Martin J. King, but not TLs... here's another kind of interesting site:

Apropos of (almost) nothing, I have been listening quite a bit lately to some folded, tapered, mass-loaded TQWTs that I had built, over 20 years ago now, for a pair of cheap but beguiling Radio Shack speakers.



 
Also, apparently hornresp is the predominant tool to use when designing one. Is this just because its free or does it do something better than software like matlab?
I don't know but you'd need the algorithms for MATLAB.
 
Oh, and speaking of Martin J. King, but not TLs... here's another kind of interesting site:

Apropos of (almost) nothing, I have been listening quite a bit lately to some folded, tapered, mass-loaded TQWTs that I had built, over 20 years ago now, for a pair of cheap but beguiling Radio Shack speakers.



My current one will (may at this point honestly) use one of those dayton epique drivers. I have a few sitting around from a project I never finished. I want to do a small enclosure so I figured a smallish speaker like that would be good, but I'm just kind of wondering if I covered all my bases. If there's a way to use the driver in such a way that it can exceed its spec then I'm all for it (short of just getting new drivers of course). I just kind of have a hard time believing there's nothing I can really do with them short of just a 2-way with a tweeter with low sensitivity.

Unrelated, I did get some cool BMR stuff recently from Tectonic which I do want to use in this build as well. Shout out to them by the by. Good customer service.
I don't know but you'd need the algorithms for MATLAB.
True. That and, unless you're using it in a professional capacity, it just isn't really practical. I'm always reading companies using software to simulate the functions, but they're all an arm and a leg.
 
Over on Audioholics' forum there is a member called TLSGuy who has been doing the TL thing for a while and might be a great source for you.
 
Over on Audioholics' forum there is a member called TLSGuy who has been doing the TL thing for a while and might be a great source for you.
Thank you I'll go check it out :)
 
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