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Re: Vertical array vs trap arrays

Posted by Centauri (P) on December 9, 2004 at 07:11:52

In Reply to: Re: Vertical array vs trap arrays posted by DSM on December 9, 2004 at 06:36:44:

Dan, the Alpha6 experiments did steer towards a line array for a while, but I found that getting a wide dispersion was not as easy as it seemed. Due to requiring a vertical diffraction slot, the initial horn expansion to the slot was very steep, causing path length cancellations in this area. A trial split throat arrangement seemed to work better, but would neccessitate a complex fibreglass moulding to achieve in practise.

After re-reading various line array theory papers, and writings from Tony Andrews and others, plus taking into account the proposed line array would only cover 90 degrees horizontally, I am going back to the trap box idea. Currently working on confining dispersion to 40 degrees horizontal by as narrow as I can get vertical. If the box is built right, one inverted box on top of the first could give a psuedo line for extra spl in the top end in each direction. Still looking at the box running two 1" drivers, two Alpha 6 and maybe two Beta 8 or one Kappa 12 for low mids.

Lots of money certainly would make things easier - I would probably go Resolution 5s over EAW KF940 subs (dream, dream....) :)

Cheers
Graeme

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