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Directivity of TH115/118

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Frederik Rosenkjśr:
I'm curious about the directivity of, say, a cluster of 4 x Danley Sound Labs TH115 or TH118 (I guess they are more or less identical in this respect) placed on the ground standing up like normal with the exits near the ground, all cabinets placed right up against each other.

I hear it said that the flanges that are made up by "the rest" of the cabinets give it some directivity, but I'm curious as to how much this is.

I'm not sure exactly what I'm looking for - but what have you got? :) Measurements, subjective experience (eg. compared to a cluster of less tall, frontloaded subs?), theory...anything would be appreciated!

Keith Broughton:
I have used an array of TH115's in an 8 x wide 2 x high (16 cabs) across the front of the stage and the directivity was quite narrow. Ended up "steering" with delay.
Very little "on stage" low end compared to a bunch of front loaded 18's. Gotta say it was pretty punchy too!
I have no measurements to provide.

Frederik Rosenkjśr:

--- Quote from: keith broughton on January 27, 2011, 08:21:19 AM ---I have used an array of TH115's in an 8 x wide 2 x high (16 cabs) across the front of the stage and the directivity was quite narrow. Ended up "steering" with delay.
Very little "on stage" low end compared to a bunch of front loaded 18's. Gotta say it was pretty punchy too!
I have no measurements to provide.

--- End quote ---

Ok - were they lying down on their side? Wouldn't they be be quite high if standing up?

John Halliburton:
Keith,

How large an event were you covering with the sixteen 115?  I'm trying to get a friend interested in the used cabinets on the west coast, and wondering how large a concert eight would cover for rock n roll.

Best regards,

John

Josh Bennett:
I've used 4 side by side in the center, compared to direct radiating 18"s they do have a little more directivity, but I haven't done any measurements yet.

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