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-   -   The Supernova! (a full range flooder line source) (http://www.diyaudio.com/forums/full-range/224222-supernova-full-range-flooder-line-source.html)

Melo theory 24th November 2012 10:18 PM

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.

http://i167.photobucket.com/albums/u...Untitled21.jpg

Melo theory 24th November 2012 10:19 PM

Lots o' holes!
This is the back of the baffle....chamfered.

http://i167.photobucket.com/albums/u...124_165558.jpg

norman bates 25th November 2012 02:12 PM

:D

CLS 26th November 2012 01:03 AM

You're hooked, aren't you?

I mean the array. :D

Melo theory 26th November 2012 03:10 AM

Well, I'm hooked on experimentation!
:)

solhaga 26th November 2012 06:40 AM

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?

Melo theory 26th November 2012 04:05 PM

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 :)

solhaga 26th November 2012 10:22 PM

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?

Melo theory 26th November 2012 11:25 PM

I don't quite understand what you are describing.

CLS 27th November 2012 02:53 AM

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? :D

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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