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porn horns

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davey t View Drop Down
Young Croc
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Post Options Post Options   Thanks (0) Thanks(0)   Quote davey t Quote  Post ReplyReply Direct Link To This Post Topic: porn horns
    Posted: 21 October 2004 at 11:08am

haha, what a stupid name.

 

Anyways, has anyone qactually used these yet? More to the point, has anyone built and entire cabinet with the p-audio drivers and the 1.5" horn? did you just design a box around them?

I was wondering if anyone could explain the weird horn shape the 1.5" has. It svery narrow and small. Any reason for this?

I have 4 LAB horns and 4 HD15's. My current mid-yops struggle to keep up now. However, pat experience has always taught me that it takes 2 12" drivers to keep up with a 1.5" Compression driver. Do you think the porn horn would give enough increase to make things even iwth just 1 12"?

cheers guys

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davey t View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote davey t Quote  Post ReplyReply Direct Link To This Post Posted: 21 October 2004 at 11:10am
and this board REALLY needs a modify function. Sorry about the type-o's!
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loophole View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote loophole Quote  Post ReplyReply Direct Link To This Post Posted: 21 October 2004 at 11:12am
yes and yes, ill explain all of it....... but i gotta go to work now, so unfortunately you'll have to wait till im back ;)
safe..
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tb_mike View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote tb_mike Quote  Post ReplyReply Direct Link To This Post Posted: 21 October 2004 at 11:48am

<i>However, pat experience has always taught me that it takes 2 12" drivers to keep up with a 1.5" Compression driver</i>

Most definately. Compression horns with HF horn flare can result in typical sensitivities of ~109db/1watt! Many 12"s simply cant match this (Closer to 97db/1watt),and youl need to either Pad the HF horn down- or active filter and match the levels that way.

 

As another thread on this forum shows-theres more to making speakers than plonking drivers onto a box and seeing what happens..it may make some noise though.

Cheers!

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Timber_MG View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Timber_MG Quote  Post ReplyReply Direct Link To This Post Posted: 21 October 2004 at 12:05pm
However, assuming the 12 goes up well in that horn, using a single horn per side will result in a more relaxed sounding HF. JBLesque horn drivers are famous for their shout between 1-4k and some people have gotten used to it (personally I hate harsh HF like nothing else and thus am going for other drivers). The dual option will give you more useful output than just double the amp power, as it restricts the vertical dispersion to a lower frequency and adds a max 6dB towards the lower end (probably closer o 3dB at x-over, but most of the energy is lower down anyways). The double also allows you to operate the horn lower / or with less excursion and thus distortion.

The HF horn is a  conical horn(actually waveguide) if Rog is to be believed from days gone by (he also referred to the Selenium HL14-50 as a conical horn where the polar plots have a completely different take on this)

A conical horn has the advantage of having a very consistent dispersion and arrays very, very well. That horn is 8" in diameter about and even with a conical expansion should load the driver sufficiently. Apparently one has to pull down the driver a lot in that range, which would also help extending the HF well beyond 12k (of course one'd have to eq the horn). Modern drivers are very, very loud and don't need as much acoustical loading as in days gone by.

Martin

PS: When will we see some porn horn porn? Polar plots and more goodies. Surely the guys at Proaudio Parts must have measured them out and still have the plots somewhere? Perhaps Alex can post something along with the results of the shootout.
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davey t View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote davey t Quote  Post ReplyReply Direct Link To This Post Posted: 21 October 2004 at 3:24pm
So anyone actually built and used these yet?
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dubsuction View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote dubsuction Quote  Post ReplyReply Direct Link To This Post Posted: 21 October 2004 at 3:42pm

think master loophole or andrew may be the men....(sorry if its not!) i know someone on the forum haz got some...

...damn memory

peace+respect-always
**HIGH PRESSURE SOUND SYSTEM**
www.highpressuresound.co.uk
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whitehousejamie View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote whitehousejamie Quote  Post ReplyReply Direct Link To This Post Posted: 21 October 2004 at 3:44pm
Yes, loophole has some porn horns. He'll probrably be posting when he gets back from work.
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