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line array projects

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MusicXtra View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote MusicXtra Quote  Post ReplyReply Direct Link To This Post Posted: 06 August 2009 at 2:24pm
With the first version of the wave guide the dispersion was 30 degrees vertical, after modification it is 15 degrees and that is narrow enough for me but it is not a real line source array.

This 'wish' list is the result of 6 years of thinkingBig smile:
The system must be small enough to handle alone, so the weight of one cabinet must be less than 25 kg.
The system must be usable for small cafe's also on festivals with 2000 persons of audience so a stack of 2 cabinets must have the same good quality as a flown stack of 8 cabinets.
It must be compatitive in sound and construction with the best systems on the market and it must be a new concept, so it was neccesary to use very good components.
It must be stackable and flyable because for 90% of the gigs I use it as a ground stack.
The rigging must be easy to produce and easy to handle with a safety factor of at least 10:1 for a stack of 12 cabinets.
The impedance of one cabinet must be 16 Ohm so that I can connect up to 6 cabinets parallel.

And here is the result of a lot of blood sweat and tearsWink.
The stack stands on a flight-case for four cabinets.


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MusicXtra View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote MusicXtra Quote  Post ReplyReply Direct Link To This Post Posted: 06 August 2009 at 2:26pm
Here a picture of the first gig with the system.

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Post Options Post Options   Thanks (0) Thanks(0)   Quote Shelfstacker Quote  Post ReplyReply Direct Link To This Post Posted: 06 August 2009 at 2:43pm
Wow, an amazing effort.  Looks a lot like the Logic Systems CA10 and CA20 we use.  Any ideas of what the cost per box to build this has set you back?
If you are at the circus and being attacked by clowns - go for the juggler
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Post Options Post Options   Thanks (1) Thanks(1)   Quote audioalliance Quote  Post ReplyReply Direct Link To This Post Posted: 06 August 2009 at 5:57pm
looks mean... great for anywhere, anytime... very impressive
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Tony Wilkes Quote  Post ReplyReply Direct Link To This Post Posted: 06 August 2009 at 7:08pm
Is the new fly hardware "Galvanised Steel" ?

Tony
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Jake_Fielder Quote  Post ReplyReply Direct Link To This Post Posted: 06 August 2009 at 7:16pm
Originally posted by MusicXtra MusicXtra wrote:



 
Clap
 
Impressive
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MusicXtra View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote MusicXtra Quote  Post ReplyReply Direct Link To This Post Posted: 06 August 2009 at 7:21pm
Originally posted by Tony Wilkes Tony Wilkes wrote:

Is the new fly hardware "Galvanised Steel" ?

Tony

Nope, it's the same fly-ware as in the other pics but now it's black anodised.
Here's a detail pictureBig smile

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Post Options Post Options   Thanks (0) Thanks(0)   Quote Tony Wilkes Quote  Post ReplyReply Direct Link To This Post Posted: 06 August 2009 at 7:26pm
OK thank you. I thought it would have been strange.

Tony
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Post Options Post Options   Thanks (0) Thanks(0)   Quote space-face Quote  Post ReplyReply Direct Link To This Post Posted: 06 August 2009 at 8:15pm

I'm very impressed!

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Post Options Post Options   Thanks (0) Thanks(0)   Quote Quantum Sounds Quote  Post ReplyReply Direct Link To This Post Posted: 06 August 2009 at 8:49pm
Clap excellent work that looks lovely

what program did you use to model the hi section?

and where can you get thiele small parameters for compression drives? or how did you model it?


Edited by Quantum Sounds - 06 August 2009 at 8:50pm
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MusicXtra View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote MusicXtra Quote  Post ReplyReply Direct Link To This Post Posted: 06 August 2009 at 8:50pm
The only 'problem' I have is which glue will work with the foam on the grilles.
Is there anybody here with a briljant solution?
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Post Options Post Options   Thanks (0) Thanks(0)   Quote MusicXtra Quote  Post ReplyReply Direct Link To This Post Posted: 06 August 2009 at 8:57pm
Originally posted by Quantum Sounds Quantum Sounds wrote:

Clap excellent work that looks lovely

what program did you use to model the hi section?

and where can you get thiele small parameters for compression drives? or how did you model it?

The hi section is a trail and error project.Embarrassed But the final result have no errorsStar
The most important issue is to make a, more or less, cilindrical wavefront of a sferical wavefront, important is the length of the waves from the highest frequenties and to mak the hornpath on every place of the horn mouth the same for all frequenties.
But, as I wrote in an earlyer reaction: This system is not a line source array but only a line-array. Line sourde array's have a vertical dispersion les than 5 degrees for one cabinet, this system 15.
The reason for this choice is that I want to use the system with 2 cabinets in small locations and I never had bigger gigs than 3000 people. The last reason is that with a real line source array you always need a good calculation program for calculate how tot fly or stack the array.



Edited by MusicXtra - 06 August 2009 at 9:01pm
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