Horn > all?

[pheint_1]

lol i know bro, i really appreciated their help nice of em to all chime in

[MickyMcD]

Hi mate,

Although your question has been answered, I thought I would just chime in quickly.

A horn in terms of low frequency is an acoustical impedance matching device that attempts to make use of an exponentially expanding airspace to maximise output over a set bandpass. Low frequency horn enclosures are not easily designed and are not usually designed to operate in single units. Multiples of two mouths are common with horn subwoofers often making appearances as two-a-side, four-a-side, eight-a-side etc.

The lower the low frequency cutoff for the system, the longer the horn path. One thing to remember is that a horn does have acoustic resistance, and that acoustic resistance can be measured electrically as resistance on the diaphragm. Some horn paths will offer as much as two times the impedance at some frequencies and going below the low frequency cutoff can result in a MASSIVE drop in impedance (cough Labsub cough), sometimes allowing your amplifier to drop a metric dicktonne of power into the low impedance on the cones below resonant frequency, tearing them apart.

Horn enclosures have a myth that they form the wave further out from the box than a normal front radiating speaker. Complete bullshit as the pressure difference that is sound begins at the incident, which would be the cone on the loudspeaker. They often do, however, show phase and time domain anomalies close to the loudspeaker that give the perception of decreased volume. Given a distance away from the cluster, the mouths sum cohesively and gain amplitude. Ed Lester has also very correctly pointed out that horn mouths do not want to be in a small environment, no smaller than 3π (3pie), although some do not even like 3pie!.

Cheers,

Mick

[J-Lane]

OK. I have only seen one Horn loaded design that fits well in a vehicle and unfortunately you will still need a fair amount of room for this thing. A friend of mine had a Suburban that he wanted to build a horn loaded design for and he found this design. It is actually not too hard to build if you have some box building experience. The thing that blew me away is that he had two Pioneer 10's that he was using for this box. I have never liked Pioneer subs because well if you have ever heard them you would know why. After we put this box in his car he played all kinds of music from Rap to Rock to Jazz and this thing hit so solid and still hit extreme lows I couldn't believe it. It was unreal how loud it could get while still producing excellent sound quality. The plans are free to download. Check it out. FYI don't do the smaller version. It doesn't sound good at all.

[STEvil]

hmm.. might have to try and build a WO32 (obviously will be changed...) to sqeeze some 18's into.. on 4KW... haha.

Edited August 24, 2010 by STEvil

[OrionStang]

My .02, I bought a horn design from PWK and it fucking sucks. This was supposed to be for an XL 12.

https://webmail.us.army.mil/attach/01.png?sid=&mbox=INBOX&uid=3390&number=4&filename=01.png

Paid $60 bucks for that shit.

Edited August 24, 2010 by OrionStang

[kirill007]

My .02, I bought a horn design from PWK and it fucking sucks. This was supposed to be for an XL 12.

https://webmail.us.army.mil/attach/01.png?sid=&mbox=INBOX&uid=3390&number=4&filename=01.png

Paid $60 bucks for that shit.

Link doesn't works. (and firefox says it's not a safe link.)

[OrionStang]

Link doesn't works. (and firefox says it's not a safe link.)

Works fine for me. Its a pic from a government email account, thats why you get the warning.

[OrionStang]

Here you go,

Edited August 24, 2010 by OrionStang

[bcpballer64]

Damn he is taking some people. He doesnt even give you any angle measurements or anything.

[OrionStang]

5 degrees on the angles. But yea, he's advertising extreme design engineering, but using a cookie cutter design and merely changing dimensions as needed.