The Supernova! (a full range flooder line source) - diyAudio
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Old 24th November 2012, 09:18 PM   #1
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Default The Supernova! (a full range flooder line source)

This is the design.
vifa tc9 x 50
45 degree flooder.
On wall.
Both channels are in 1 box.
This is an ambiopole.
I will be using the mini-ambio RACE algorithm.

Click the image to open in full size.
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Old 24th November 2012, 09:19 PM   #2
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Lots o' holes!
This is the back of the baffle....chamfered.

Click the image to open in full size.
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Old 25th November 2012, 01:12 PM   #3
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Old 26th November 2012, 12:03 AM   #4
CLS is offline CLS  Taiwan
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You're hooked, aren't you?

I mean the array.
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Old 26th November 2012, 02:10 AM   #5
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Well, I'm hooked on experimentation!
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Old 26th November 2012, 05:40 AM   #6
solhaga is offline solhaga  Sweden
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Great ideas Melo!

"on the Wall" means that there´s no need for BSC, but what about CTC combing?
Are you going to address that with EQ only?
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Old 26th November 2012, 03:05 PM   #7
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Hey thanx solhaga!
As far as CTC comb filtering, I don't see it being much of a problem with this configuration because the listener is 45 degrees off axis so CTC combing will only be audible coming off the reflected sidewall, and buy the time it reaches the ears it will be more diffused and also the driver beaming will have a greater distance to sum. Also the signal will be down 3db in amplitude.
It will need eq never the less. All line sources have comb filtering regardless of CTC spacing or even a continuous line (like a ribbon or planar)
There is just more combing at a closer distance with larger CTC spacing.
But, this is just an experiment.....we will see how it goes
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Old 26th November 2012, 09:22 PM   #8
solhaga is offline solhaga  Sweden
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So what about having two narrower of'em as a stereo pair, perhaps standalone with a little bit of wall/baffle?
Couldn't the advantages that you mentioned still be enjoyed?
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Old 26th November 2012, 10:25 PM   #9
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I don't quite understand what you are describing.
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Old 27th November 2012, 01:53 AM   #10
CLS is offline CLS  Taiwan
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It's unecessary to worry too much about the comb filtering. Some people seem like scaring other away from array speaker by this.

See it this way, in an ordanary stereo system, 2 tweeters are separated by more than 2 meters in most cases. And they are playing the same signal in a mono (or almost mono) situation, which is very commonly seen in any central images - pop vocal, solo instrument... etc. So, how about that? Is anyone worrying about comb filtering here?

Comb filtering effect does exist and detectable in vertical array, if CTC is large enough, if operating frequency is high enough. But, it can be cured to an extent which is more than acceptable.

And other (strong) benefits of arrays can easily justify that (little) trouble. No big deal. Trade-offs are unavoidable in everything, everywhere. This is a good one.
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