Suggested 1" Comp's for use 5khz-18khz |
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djkeet
Registered User Joined: 26 December 2011 Location: England Status: Offline Points: 462 |
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I've got the CD10'S but if I could afford them I would go for the Beyma cp380m still would need to sit above a good 2''
Edited by djkeet - 14 March 2017 at 7:16pm |
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Earplug
Old Croc Joined: 03 January 2012 Location: Europe Status: Offline Points: 7216 |
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I did a lot of tests with a carpenter here who wanted to build a waveguide. Needless to say, it´s not simple. Unless you have the patience - and resourses, I´d go with 2 x 90º x 40º horns arrayed vertically as you say. Drivers - not sure. Beyma make some very nice drivers, as do BMS. A matter of budget and taste, really. |
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Earplugs Are For Wimps!
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MarjanM
Old Croc Joined: 10 February 2005 Location: Macedonia Status: Offline Points: 7816 |
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Vertical arraying of 90x40 degree horns is just a bad compromise.
You need proper line array wgs. No other way around it. Now i am not sure what your idea is here, and how you plan on using the rest of the components, but that will largely determine what you actually need. I dont find many line array boxes where hf drivers are cut so high. Even if they are 3 way the hf is the part that is the most crucial. The box you have heard, the D&B V8 has two 2.5 inch vc hf drivers cut at around 1khz.
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Marjan Milosevic
MM-Acoustics www.mm-acoustics.com https://www.facebook.com/pages/MM-Acoustics/608901282527713 |
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toastyghost
The 10,000 Points Club Joined: 09 January 2007 Location: Manchester Status: Offline Points: 10919 |
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Are you going to be using an actual array? Like more than four boxes in a flown hang?
If not what you need is wide dispersion point source. |
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nickyburnell
Old Croc Joined: 06 February 2005 Status: Offline Points: 4410 |
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Do they still make 380m? Bloody lovely driver |
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It's everything, not everythink!
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djkeet
Registered User Joined: 26 December 2011 Location: England Status: Offline Points: 462 |
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Yes Blue Aran and Thomanns still stock them and dia's as well
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Elliot Thompson
Old Croc Joined: 02 April 2004 Location: United States Status: Offline Points: 5175 |
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No matter how good of a compression driver you buy, it is the integration of the cone driver with the compression driver that offers the clarity of a line-array. That will be your biggest challenge for the majority of the cone drivers used in off the shelf designs are proprietary designed. Best Regards, |
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Elliot Thompson
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toastyghost
The 10,000 Points Club Joined: 09 January 2007 Location: Manchester Status: Offline Points: 10919 |
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And have a lot of time put into the design of the phase plates and physical integration with the waveguide exit. Getting pattern control consistent without severe lobing throughout the vocal range is not so easy - and a lot of it also comes down to having a highly skilled crossover design, both passive and active. Out of band EQ and small bits of FIR are common in most modern boxes, as is dynamic EQ or filter adjustment too. If you're not doing shows of over 1500 people, you don't need a line array. |
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levyte357-
Old Croc Joined: 27 July 2012 Location: UK, South East Status: Offline Points: 8128 |
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This and previous technical statements, has brought things back to reality.. So I guess we're now discussing, recommended 1" drivers and horns, for stacking vertically in a cab, above 2", for 8khz up. |
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MattStolton
Old Croc Joined: 04 September 2010 Location: Walthamstow Status: Offline Points: 4234 |
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For so many reasons... Put simply, to pay for a long enough hang to be put in place, to actually be effective (say 12 boxes per side minimum) requires enough tickets sales to pay for it, and enough height and space to hang that many boxes, as well as a big enough (wide enough) stage to put enough subs in to keep up! Line arrays of 6 boxes, or less, a side, are not line arrays. They are simply six boxes (of narrow vertical dispersion) stacked on top of each other. At high frequencies you will get some coupling and cylindrical wavefront effect (i.e. breaks inverse square law, which is the whole point), but at mid frequencies, you don't get cylindrical wavefront, so volume drops off as a function of inverse square law. So HF, 30m back from stack has reduced by 3dB per doubling of distance, whereas the MF and bass has reduced by 6dB per doubling of distance. (ignoring reverberant far field contributions)
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Matt Stolton - Technical Director (!!!) - Wilding Sound Ltd
"Sparkius metiretur vestra" - "Meter Your Mains" |
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wires
Young Croc Joined: 21 May 2009 Status: Offline Points: 1365 |
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If you are confident in designing line array boxes, Have you thought about synergy horns and the like? Multiple drivers in a source that wouldn't require a massive line. Still not an easy build. Danely reggae system :) |
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corell
Young Croc Joined: 19 August 2013 Location: Berlin Status: Offline Points: 1161 |
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Synergy horns still have one single HF, so not much more than ~117-120 dB max until 10%THD 8kHz up...
Whats the reason not to use BMS 4505 other than its price? |
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