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Old 21st July 2010, 02:21 PM   #11
jbell is offline jbell  United States
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yep, the typical 2 forward, 1 back array to get bass directionality.

TH's have that directionality in single cabinets.... and I happen to know a cabinet that does 38hz very well, single box.
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Old 21st July 2010, 04:32 PM   #12
Pyroibw is offline Pyroibw  United States
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Originally Posted by jbell View Post
yep, the typical 2 forward, 1 back array to get bass directionality.

TH's have that directionality in single cabinets.... and I happen to know a cabinet that does 38hz very well, single box.
your tapped horn mabey? lol.
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Old 21st July 2010, 05:43 PM   #13
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How about a couple o' homewreckers?
DECWARE's House Wrecker - High Output Subwoofer
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Old 21st July 2010, 05:55 PM   #14
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Hey Guys,
There's a little bit more to the Glastonbury sub array than meets the eye.
It's a broadside cardiod array that has Arc-delay added to it.
Each "cell" of 3 subs (2 forward one back) has incremental delay added, starting from the center and adding more delay as you move towards the ends, this has the effect of opening up the array coverage from the narrow beam typical of broadside arrays.
One thing about cardioid arrays is if driven out of their non-linear region they can suffer from "pattern-flip".
Given the fact that the OP said he had DJ's in his space this is likely to occur.
Another issue is the loss of efficency using these type of arrays, Glastonbury uses 54 cabinets, 36 forward 18 back, that's 1/3rd of the cabinets to reduce the back wave
I would suggest a broadside array with arc delay (incremental taps) to open up coverage using conventional reflex (2 x 18") cabinets if the artists onstage aren't upset by having the subs in front of them
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Old 21st July 2010, 07:47 PM   #15
jbell is offline jbell  United States
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your tapped horn mabey? lol.
you don't even have to go to the big cabinet. 16 of the cubes, stacked 2x8 in front of the stage would give you about all you could ask for from your required 38hz on up. At $200 per cube, that's some pretty cheap noise.

And yes, on anything 4 or more, you'll want to start delaying the outer boxes, or you'll end up with too narrow of a bass pattern.
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Old 21st July 2010, 07:55 PM   #16
Pyroibw is offline Pyroibw  United States
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would 8 large ones have around the same output? i need to take these out every once and a while, so id rather have fewer large cabs then a ton of small ones, lol.

also do you have a link to the plans for the large ones, i cant seem to find them.
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Old 21st July 2010, 08:21 PM   #17
jbell is offline jbell  United States
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would 8 large ones have around the same output? i need to take these out every once and a while, so id rather have fewer large cabs then a ton of small ones, lol.

also do you have a link to the plans for the large ones, i cant seem to find them.
Plans can be found early in my TH thread. However their big claim to fame is that they go low, and in a pack of 8, go REALLY low. You are xmax limited to 50v on the big cabinet.

Here is an eye opening comparison between the cube and the big cabinet.

And if I were really building in your situation, I'd probably build screamers cabinet, and not either of mine. (page 53 or 54 of the live sound only TH thread.)

The big cabinet is big, and in my opinion should be used install only. The cube is the polar opposite, doesn't go low, (barely makes it below 40hz) but is loud, portable, and was designed around using only a single sheet of plywood per box. Looks like you want something that is a good 'all around' cabinet -- that would be the furybox.
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Old 22nd July 2010, 08:20 PM   #18
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... stacked 2x8 in front of the stage ...
UNDER the stage Put that empty space to good use. Consider using a delay on the outer subs to control directionality of the horizontal array.

Or as stage extensions ->
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Old 22nd July 2010, 08:33 PM   #19
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Are those BFM's Autotubas?
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Old 22nd July 2010, 09:24 PM   #20
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Are those BFM's Autotubas?
Yes, it kicked a** with six loaded with the HL10c. 3600W and F3=36Hz for a bit greater than 134dB(SPL) max at 40Hz.
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