Horn subwoofer vs ported - diyAudio
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Old 7th May 2013, 06:58 AM   #1
JanErik is offline JanErik  Finland
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Default Horn subwoofer vs ported

I am thinking of building a "small" (8") subwoofer mainly for music. The horn designs are somehow appealing (mainly thanks to their efficiency), but I am wondering, how does it compare to a normal ported enclosure, bandpass or even a sealed, both in terms of sound quality and efficiency?
Which will give the deepest response with a given element?
Does the horn enclosure put higher requirements on the element compared to a ported? (Of course, the sealed is the most forgiving).
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Old 7th May 2013, 08:18 AM   #2
AndrewT is offline AndrewT  Scotland
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The horn, not the tapped variety, will probably have ten times the volume and need one tenth of the power.
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Old 7th May 2013, 12:52 PM   #3
johnr66 is offline johnr66  United States
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Yes, horn designs can be finicky of driver/enclosure parameters. Horn Response is a good aid for designing them. Post up the T/S of the driver and I'm sure someone here will help you along.

It is fun to impress friends by connecting a 1 watt amplifier powered by a 9v transistor radio battery to my tapped horn to show off how much bass it can make, but I use sealed subs in my "serious" music listening systems.
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Old 7th May 2013, 03:37 PM   #4
JanErik is offline JanErik  Finland
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I dont have a driver yet, but the amp is nearing completion; it is around 25W, based on TPA3123d2.
Only have an old recycled home theater sub for now, iss enough for that (I live in an apartment so I am not going to make too much noise).
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Old 8th May 2013, 11:16 PM   #5
more10 is offline more10  Sweden
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I have built a ported, a tapped horn and a front loaded pipe (horn with too small throat area) using the same driver.

The ported is about 200 liter, the tapped horn is 400 liter, the "horn" is 600 liter. The ported sounds well for being a ported box, probably because of the driver. The tapped horn sounds ok, louder than the ported but with the same character. The "horn" is a completely different story, it is loud, clear and with a very nice kick.

They all go down to about 30 Hz. A true horn going down to 30 Hz would be about 1500 liters. The ported is useable to 170 Hz, the tapped and the horn to about 80. A true horn would be useable to about 250 Hz.
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Old 9th May 2013, 08:13 AM   #6
AndrewT is offline AndrewT  Scotland
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More,
your link takes me to a completely blank post.
I can see there is a dropbox address in the code, but my security prevents me from downloading anything from there due to security risk.
Any chance you could attach your pics in future?
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Old 9th May 2013, 08:19 AM   #7
Mooly is offline Mooly  United Kingdom
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Two of the three links take me to diyAudio threads (no problems there) and the middle one (tapped horn) links to an external forum (again no problem viewing).
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Old 9th May 2013, 08:22 AM   #8
AndrewT is offline AndrewT  Scotland
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Both the DIYaudio posts are blank.
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Old 9th May 2013, 08:24 AM   #9
Mooly is offline Mooly  United Kingdom
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This is the first,
JBL 2226 ported something I built from srx boxes

and third,
JBL 2226H 30 hz "horn" i built

Do those links work ?
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Old 9th May 2013, 08:47 AM   #10
more10 is offline more10  Sweden
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All links works for me in chrome and in internet exporer.

JBL 2226 ported something I built from srx boxes
HiFiForum.nu - DIY JBL 2226 tapped pipe
JBL 2226H 30 hz "horn" i built
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