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Mnaylo3 6th October 2010 02:44 AM

Budget PA Subwoofer for tailgating
Greeting all,
My quest started over on DIYMA as I used to be very much into car sound, and my searches have led me here. A buddy of mine recently purchased a pair of cheap 2-way 12" behringer powered speakers for our modest college football tailgate. I really had no idea what to expect as this is my first foray into pro audio, but was not very happy with the complete lack of low end. I suppose I should not have been surprised given the price and size of the cabs. Anyway, now we are looking into a subwoofer. Being on a budget, I immediately thought diy. I have tools and the necessary skills to build pretty much anything, I just have no idea on designs. I've been reading and reading, but the discussions here are way over my head and I have no frame of reference on which to judge the measurements and graphs you all post of your builds. Basically, I need something portable, loud, and able to be crossed fairly high to blend in outside with the anemic cabs we currently have (which will scream in the amount of space we generally occupy). I would still like it to extend fairly low though. I would prefer a single driver enclosure. I have about 800 watts to work with and would like to maximize output/$ (preferably at or under $300 for driver and wood). It will probably mostly play rap, and pure volume trumps sound quality (though *I* would prefer something other than a one-noter for when we play other things). Portability is also second to loudness, but it has to fit in the back of an SUV along with a few other things like an ice chest or two. The first recommendation I received was for the 1850 folded horns, which look promising to my untrained eye. But the pd1850 is not readily available in the US, so could you all recommend a suitable replacement driver? Also, I've become interested in tapped horns since discovering this site as they seem to play fairly high. Any specific plans you can recommend? As a reference, my buddy is beginning to get his mind set on buying the behringer b1800x-pro to match his behringer cabs, so as long as I can exceed the performance of that I'll be happy.
P.S. available processing/eq'ing is at a very minimum...basically a high-pass and a low-pass built into the amp.


djk 6th October 2010 07:58 AM

Build a couple of TH from the one sheet challenge, cross at 120hz to the Behringers.

nac134 14th October 2010 09:59 PM

If you live near a big city, try craigs list. There are often stupendous deals on pro audio, as budding musicians struggle to pay their rent. Search under musical instruments.

djk 15th October 2010 07:40 AM

Two of the one sheet challenge TH can be built for what his budget is, and would be a good match for his power.

It would take a couple of double 18 boxes to better them, I don't think you will find them on CL for $300.

Mnaylo3 15th October 2010 05:49 PM

Thanks for the input guys. I've decided to go with jbell's single sheet design as it should easily keep up with my tops, come in well under budget, and be easy to transport. I'll build one now and another later if I feel the need. Thanks again

lazzer408 16th October 2010 03:52 AM

The 18" "PA style" box I just built is pretty chest-slamming loud. $10.50 in wood (3 2'x4' sheets @$3.50ea). Could probably be built including driver, handles, carpet, and terminals for ~$150.

Maybe get away with a speaker like this.

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