Line array - maybe baby?

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Line array - maybe baby?

Postby soundbrigade » Sat Jul 07, 2012 2:48 am

Got some inspiration from a guy over here who had purchased a box of small 3 inch fullrange chassis and started to wonder if should try the same trick.
So here's the speakers:
http://www.madisoundspeakerstore.com/approx-3-fullrange/aurasound-ns3-194-16a-3-paper-cone-16-ohm/
A box of 50 of those little thingies will cost med 75 buckweats and an extra 90 pesetas for shipping (and some extra 35 dollares for VAT in Sweden :/ ).

As I have very little space left in my corner and something tall and slim would work very good.

Right now I am trying to study the principles of line arrays and bi/di-poles.

Then, when I start exercising my brane cells, I recall some theories, found in papers from either Motorola or a synth-place. The idea looked something like this:

Left >--O--O--O--O--O--O--O--O--O--O--O--O--O--O--O--O--O--< Right

The 'O's' are the chassis, connected with some kind of filter/time delay in between in a way that the channels got more and more mixed. However this constructions also means that speaker is mounter horizontall.
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Postby battradio » Sat Jul 07, 2012 11:14 am

Auratone the company that made those speakers used to sell Bose 901 Knock off 5" speakers .

.Take a small satelite dish and mount 9 drivers on it and make a parabolic array ;)

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Postby soundbrigade » Sat Jul 07, 2012 11:26 am

Here's my problem ...

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Postby battradio » Sat Jul 07, 2012 11:57 am

You could allway mount them around the perimiter of the celing lamp lamp . O:)
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Postby soundbrigade » Sat Jul 07, 2012 12:03 pm

Very funny! NOT
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Postby EWBrown » Sat Jul 07, 2012 12:56 pm

I was thinking of something similar, but in a vertical column, these little 3 inchers would work nice with a PVC 4 inch (100mm) square fence post, for a real cheapie tower.

For USA, the only fly in the ointment, is that 76.5 mm frontal diameter is about an RCH larger than the standard 3 inch rould hole drill (76.2 mm). but then, just a tad of "wobble"
from my cheap made in Chinastan drill press would probably add the extra 0.3-.04 mm necessary. ;) (lol)

Probably wouldn't need any fancy delay / phasing tricks, just hook them up in series / parallel in order to get your desired load impedance.

Use the bass and treble controls to compensate for the weaker SPL response at the lower and higher extremes.

At a buck and a half each in qtys of 50, this is almost tempting.... =:o [:) O:)

/ed B
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Postby soundbrigade » Sat Jul 07, 2012 1:39 pm

I guess I could make a column with closed back (infinite baffle). But what about di- or bipoles?
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Postby soundbrigade » Mon Jul 09, 2012 4:47 am

More thinking, how about 16 drivers of this kind in each channel:
http://www.fountek.net/products.asp?id=48.
The total cost will be slightly higher than ordering the 50 units from madisound, but I guess the quality is higher.
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Postby EWBrown » Mon Jul 09, 2012 1:01 pm

Those Founteks look suspiciously like the "Tang Band" speakers from Part Sexpress :/ :)) [:)

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Postby soundbrigade » Mon Jul 09, 2012 1:22 pm

Fountak has a ribbon tweeter that I find interesting (and cheap):
http://www.fountek.net/products.asp?id=46
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Postby mesherm » Mon Jul 09, 2012 4:34 pm

Mike's N-1 Rule: When looking for N number of components to finish a job, you have a 95% chance of only finding N-1 of them.
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Postby EWBrown » Mon Jul 16, 2012 4:09 pm

The local Lowe's store has these same fenceposts, no expensive shipping of 4 foot long packages...

BTW, the box of 50 3 inch 16 ohm Aura speakers just arrived.... :/ [:) :))

/ed B in NC
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Postby soundbrigade » Tue Jul 17, 2012 1:10 am

I still haven't decided if I will sell my old speakers, which I must do before I by the speakers from Germany ... (???)
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