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 1 
 on: Today at 08:03:54 pm 
Started by Justice C. Bigler - Last post by Tim McCulloch
My primary lighting guy teaches AutoCad, Solid Works and Catia to aviation manufacturing students. He has a license for AutoCad from school but owns a license for VectorWorks with Spotlight.  Vw will import AutoCad files.

 2 
 on: Today at 08:03:03 pm 
Started by Justice C. Bigler - Last post by Jeff Lelko
Auto Desk tends to be the popular choice, but it really depends on what your clients or potential employers like.  I happen to be "very familiar" with a certain space agency near Cape Canaveral, and PTC Creo is the CAD program of choice.  As far as learning them goes, I like to have at least one good textbook with examples and tutorials to go off of, but Youtube videos are a nice free alternative.  Good luck! 

 3 
 on: Today at 07:52:54 pm 
Started by Gordon Brinton - Last post by Tim McCulloch
70 feet?  Think about what frequency that represents... About 16 Hz.  Coupling and combing would be around 32Hz.

IOW you won't have a power alley problem in all likelihood.

 4 
 on: Today at 07:47:30 pm 
Started by Justice C. Bigler - Last post by Justice C. Bigler
I need to jump into the deep end of the CAD software game. I'm pretty good with Sketchup. But I need a real CAD program now.

Not sure how I'm going to pay for it yet, but what should I be looking at? Working on system designs in buildings with architects, engineers, and I.T. guys; I feel like some form of something by Auto Desk is the appropriate answer. But I have access to Vectorworks through the building. The architects are using either Rhino or Revit depending on what they are doing.


But god damn these program are fucking expensive. And only available as subscriptions now.


And then I need to learn how to really use it effectively to interface with them.

 5 
 on: Today at 07:45:38 pm 
Started by Peter Hvedstrup - Last post by Arthur Wnuk
Hello Peter,

Here is an image of the xover info I got from Tannoy before the MG takeover. Hope it helps.

-Arthur

 6 
 on: Today at 06:52:18 pm 
Started by Ivan Beaver - Last post by Ivan Beaver
But subs have a 360 radiation pattern, right?
No.

It depends on the particular sub and the freq.

As with other loudspeakers, they get narrower as they go higher.

Yes, most are "generally" omni, but not always.

Some are VERY directional-without the use of electronics

 7 
 on: Today at 06:49:40 pm 
Started by Lance Hallmark - Last post by Ivan Beaver
I agree with contacting Jeff-he knows more about the products than others.

But I will add that the idea of "splitting up the bass" is generally NOT a good idea.

This is because of multiple problems.

One is because the freq ranges "desired" are very narrow-so the use of filters that are not to sweep cause lots of overlapping.

Using steep filters causes ringing.

Most subs are not flat-and some very far from flat.

So the "desired" acoustical xover is often very different than the "assumed" electrical xovers.

Different delays associated with the filters are not taken into account.

It takes careful measurement and understanding to get it to work properly.

This does not mean that it can't be done, but should be approached with caution.

The "idea" is nice, but the reality is often far from that

 8 
 on: Today at 06:39:52 pm 
Started by Gordon Brinton - Last post by Gordon Brinton
Well, three replies all for splitting the subs on each side of the stage with the tops. That's fairly convincing. I will indeed ponder it.

The stage is 70 feet wide, so there may not be much power alley if I keep their levels down. As Stu suggested, there may not be much content in the subs anyway. It's a musical play. The focus should be primarily on vocals and melody instruments, not kick drum and bass.

I ran a few plots to see my room coverage. (I could not plot low frequencies because my sub specs are not in the software yet.) For shits and giggles, I plotted at 400Hz, 1000Hz, 5000Hz, and 10000Hz. The room dimensions are not entirely accurate, but close enough to get a peek at what's going on.

I never plotted a room before, so I don't know if this is good or horrible. The first problem I see is that my highs are not getting to the back. They aren't expecting a full house, though.

 9 
 on: Today at 06:23:45 pm 
Started by Gary Green - Last post by Len Zenith Jr
I upgraded to a netgear ac1750, works great with all my gear (driverack venue 360,  laptop for dmx software, etc). I wouldn't bother with the built in interface.

 10 
 on: Today at 05:50:06 pm 
Started by jesseweiss - Last post by Tim McCulloch
My only complaint with Yamaha pres is when you hit it a little to hard it sounds like someone cutting wood...

Then don't do that. 👏

Quote
Other than that the difference between tonality in  preamps is completely subjective, chances are the rest of the console and system has more effect on tone.

Absolutely this ^^^^

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