8x Aura NS3-193-4a subwoofer (Worth my time?) - diyAudio
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Old Yesterday, 03:20 PM   #1
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Join Date: Dec 2012
Location: Pontiac, MI
Default 8x Aura NS3-193-4a subwoofer (Worth my time?)

I have (8) Aura NS3-193-4a's [planning on] being fed 75 watts RMS.

1.5 cu ft, (1) 3" port @ 2.4" long
52 hz tuning
F3 of 45 hz
F10 of 39hz

I have access to a CNC table;
Any suggestions otherwise?
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Old Yesterday, 06:59 PM   #2
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You could get away with a tapped horn with very high compression ratio. Have a play with Hornresp and see what you get.

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Old Yesterday, 08:41 PM   #3
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Join Date: Dec 2012
Location: Pontiac, MI
I have no idea how to even use hornresp; completely over my head.

I've read Danly's white paper...meh.
I've played with hornresp, read a few tutorials, and I still don't understand.
I'll have to sit down keep reading some more I suppose.

Thanks for the reply.
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Old Yesterday, 08:57 PM   #4
xrk971 is offline xrk971  United States
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You want to stick 8 of these 3in drivers in series-parallel to make equivalent of a larger driver for a tapped horn? That is about same Sd as an 8in driver. Look for a HR script for the MCM 55-2421 8in sub driver and put 8 of these in as a starting point. Kind of a waste of money as these are circa $20 drivers and for $30 you can get the MCM which will probably work better.
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Old Yesterday, 10:36 PM   #5
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Well I already have these; which I paid $9 a piece for them. I don't have the MCM driver.

I think of it as informational. Also, I'm not totally SET on a tapped horn, that was just one guy's suggestion and I don't even know how to design it; doubt ill go that route.

I've seen TL plans online which I requested my CNC guy to cut for me, as well as the box I proposed so I can try both.
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Old Today, 12:08 AM   #6
sine143 is offline sine143  United States
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if you've got a little bit of space, this flh looks decent for extension down to 45hz at 250 liters.

it will only take 10 volts to exceed xmax of 4.5mm one way.
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