Designing a tapped horn - Realm of Excursion



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Old 11-20-2012   #1 (permalink)
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Default Designing a tapped horn

A tapped horn is similar to a rear loaded horn. However the sub is mounted inside the horn. This gives us more control of the response. It is also convenient because it can be much easier to construct than a rear loaded horn.

Anyways please read this excellent post before we continue
www.hometheatershack.com/forums/diy-subwoofers-general-discussion/36532-hornresp-dum-hmm-everyone.html

Because there are a several 1/4 wave resonances at play, this box ends up having a response similar to a bandpass. However there will also be output at multiples of the 1/4 wave resonances, but this output is not useful. For all intents and purposes only the first 2 to 3 octaves are useful.
Advantages:
  • Efficiency
  • Bandwidth
  • Cone control
  • No port noise
Disadvantages:
  • Size
  • Mounting the subs inverted is almost always necessary.

Because the tapped horn is only effective down to its 1/4 wave path length, they end up being massive boxes. There is no free lunch. If you want a box that plays low, and is efficient at doing it, it'll be huge. It's Hoffman's Iron law. Efficiency, LF extension, Large box, choose 2.

In the next couple posts I'll take you through my process for designing tapped horns.
Cheers,
-Jud



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Old 11-20-2012   #2 (permalink)
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Default Re: Designing a tapped horn

nooooooooooooooooo

how will we ever stay popular if all of our secrets are goneeeeeeeee
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Old 11-20-2012   #3 (permalink)
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Default Re: Designing a tapped horn

Link doesn't work
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Old 11-20-2012   #4 (permalink)
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Default Re: Designing a tapped horn

yeah it does.

Hornresp for Dum... hmm... Everyone - Home Theater Forum and Systems - HomeTheaterShack.com
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Old 11-20-2012   #5 (permalink)
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Default Re: Designing a tapped horn

Quote:
Originally Posted by cxa0897 View Post
nooooooooooooooooo

how will we ever stay popular if all of our secrets are goneeeeeeeee
lol average person wouldn't know what the hell he's talking about. And I can honestly say I don't know what the hell he is talking about
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Old 11-21-2012   #6 (permalink)
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Default Re: Designing a tapped horn

One of my eyeballs popped out of my head trying to comprehend that....
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Old 11-21-2012   #7 (permalink)
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Default Re: Designing a tapped horn

I kept it super simple....

Any who obviously there's more to come.
Let me know which parts don't make sense to you and I'll elaborate.



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Old 11-21-2012   #8 (permalink)
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Default Re: Designing a tapped horn

Quote:
Originally Posted by Fallen View Post
I kept it super simple....
Let me know which parts don't make sense to you and I'll elaborate.
See Fallen's sig
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Old 12-02-2012   #9 (permalink)
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Default Re: Designing a tapped horn

Quote:
Originally Posted by Fallen View Post
I kept it super simple....

Any who obviously there's more to come.
Let me know which parts don't make sense to you and I'll elaborate.
I guess telling them about T-TQWT and TQWP is out of the question,

Tapped Horn = positive flare, more efficient, bigger enclosure, SPL.
Tapped Quarter Wave Pipe = straight flare, easy build!
Tapped-Tapered Quarter Wave Tube = negative flare, less efficient, smaller enclosure, SQ.
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Old 12-03-2012   #10 (permalink)
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Default Re: Designing a tapped horn

98% of people who read that will have not a clue what the author is saying. 1% is lying that says they understood and the other 1% are just mythical unicorns. This is when you just pay someone and hope and pray they really know what they are doing when they send you a design.
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Old 12-03-2012   #11 (permalink)
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Default Re: Designing a tapped horn

Lol!
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