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In the Forum: Horn-Loaded Speakers
In the Thread: The tapped horns: cons, pros and Sound
Post Subject: What is going on with tapped horns...Posted by Romy the Cat on: 4/30/2009
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 Kcct82 wrote:

I didn't use John Hasquin's tapped horn design, I modeled my own in hornresp for my TAD woofer. I knew I would only need it up to ~55Hz so I was happy to have it flat from 23Hz-70Hz.
The lowest crossover point for Behringer DCX 2496 is 20Hz, I can try it either with or without a filter at 20Hz.  

Keith, this experiment must NOT be done blindly as it will absolutely defeat the purpose if it done methodology incorrect. You will have the “change” in sound but you will not know if this change was due to the high-pass filter truncated response itself or because it unloaded the unused bass. You need to run very high resolution of RTA at the bottom knee of your tapped horn and to see if your high-pass does not cut the tail of the natural response. Theoretically the filter must kick in right after then but who knows what happenes in the case of the tapped horn…
 decoud wrote:
Romy, I know you despise DIY, but isn't this so obscenely simple to build one may as well try it? Presumably, all one needs is a length of large diameter cylindrical pipe, with a partition running down the middle? If one uses two pipes of slightly different diameter, with sand poured between them, even the material the pipes are made of would not matter, no?

Oh, No! It is very much not on my horizons. If I do it then I certainly would not do it myself but commission right people to do the job and manage the project but to do it I would need some reasoning: theoretical or empirical.  Empirically I have no data as I never heard properly made tapped horns. I do not have problem with my bass and I never had any of my visitors pointed out in my bass the specific shortcomings that they feel need to be addressed. It is not that I do not recognize in my current bass specific idiosyncrasies that I would like to be doe different but I have no evidences that tapped horn or even conventional bass horn would address them. Theoretically I as well see justifications why tapped horn would be a more advance option. This is why I am asking what is going on with tapped horns…

The Cat

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