Does tapped horn behave same as bass reflex ports? |
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0krizia
Registered User Joined: 15 February 2016 Location: norway Status: Offline Points: 79 |
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Posted: 17 October 2022 at 10:26am |
So im interested in learning about tapped horns. From what I understand, the horn length is a quarter of the frequency they are designed to handle well. If the horn impact the sound waves just like a port in a bass reflex design, then the usable frequency response must me very narrow. Is horn different from ports? If so, what makes them different? What does a 1/4 wavelength do different than a small port, tuned to the same frequency?
Edited by 0krizia - 17 October 2022 at 10:26am |
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0krizia
Registered User Joined: 15 February 2016 Location: norway Status: Offline Points: 79 |
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Is the usable frequency response of tapped horn wider than the frequency response of a normal bassreflex port? I might be bad at googling, but I have yet to find any good Info on this matter, or.. well… I have found some articles about horns but once I see complex math equations I tend to back of and look for something simpler to read.
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carlosdelondres
Registered User Joined: 21 June 2012 Location: London Status: Offline Points: 243 |
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You could do worse than start with this thread: https://www.diyaudio.com/community/threads/evolution-of-the-tapped-horn.135879/ Note the author of post #5 Lots more stuff out there of course.
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toastyghost
The 10,000 Points Club Joined: 09 January 2007 Location: Manchester Status: Offline Points: 10919 |
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I'd first begin with the basics of designs based on quarter wave propagation:
http://quarter-wave.com/ Tons of stuff here which covers most bases, especially if you read it in order. |
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0krizia
Registered User Joined: 15 February 2016 Location: norway Status: Offline Points: 79 |
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Thank you guys.
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Augusts
Registered User Joined: 07 January 2017 Status: Offline Points: 180 |
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From my experience, tapped horns and bass reflex have different dispersion in smaller rooms - BR fills a smaller room nicely but TH has more of a "throw"
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0krizia
Registered User Joined: 15 February 2016 Location: norway Status: Offline Points: 79 |
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How can one soundsource make soundwaves behave differently than another soundsource? Soundwaves behavior should follow the laws of physics regardless of soundsource?
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Xoc1
Registered User Joined: 15 October 2012 Location: Devon UK Status: Offline Points: 397 |
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Generally for a chosen driver an optimal tapped horn will be bigger in volume than an optimal bass reflex cabinet.
Unsurprisingly the tapped horn being bigger is also louder - Being louder is often referred to as 'Throw'
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Jo bg
Young Croc Joined: 08 March 2017 Status: Offline Points: 552 |
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Danley patents are very enlightening.
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Augusts
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We tried playing different sine waves in about a 70m2 and the TH had more spots of cancellation that BR. I dono. just saying, thats my experience, maybe its an illusion...
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Augusts
Registered User Joined: 07 January 2017 Status: Offline Points: 180 |
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Horns usually also do not work well in small rooms. We had a party in a 30m2 rooms and we turned the FLH facing the wall, then it worked great
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Sypa
Young Croc Joined: 21 February 2013 Location: Croatia Status: Offline Points: 921 |
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Have they been volume matched ?
Maybe the TH excites the room modes more simply because of loudness. Also maybe it was peaky exactly in the room mode frequency . I mean I also witnessed this with reflex really filling up a room nicely like it's contained much more within it and pretty even response all around. |
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