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A Big'un - the Audio Nirvana Super 15
A Big'un - the Audio Nirvana Super 15
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Old 14th August 2012, 02:51 AM   #1
Bigun is offline Bigun  Canada
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A Big'un - the Audio Nirvana Super 15
Default A Big'un - the Audio Nirvana Super 15

I decided it was time to open a thread to capture my experiences with this driver and the box I'm going to make for it.

It's a big driver. Until you have one in your hands, it's hard to imagine.

More about the driver here


Edit: this design eventually became an open back box with a light level of stuffing behind the driver. It's not an open baffle because the highs are mostly radiated from the front whizzer cone and the stuffing absorbs these frequencies behind the driver. The bass however is able to radiate backwards from what is essentially a U-frame so I would expect the rear wave will not by symmetrical to the front wave, i.e. some cardioid response is likely although not measured. It sounds much better than with a closed box.
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Last edited by Bigun; 16th May 2014 at 06:31 PM.
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Old 14th August 2012, 02:56 AM   #2
Bigun is offline Bigun  Canada
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A Big'un - the Audio Nirvana Super 15
A big driver deserves a big box. I requested plans for the 13.6 cu.ft. enclosure from the Common Sense Audio.

There will be no supporting woofers or tweeters, nothing other than a wire between the amplifier and the driver.

This is the real deal, a single full-range driver.

Sitting on the floor the driver has been gently breaking in and it sounds very promising.
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"The test of the machine is the satisfaction it gives you. There isn't any other test. If the machine produces tranquility it's right. If it disturbs you it's wrong until either the machine or your mind is changed." Robert M Pirsig.

Last edited by Bigun; 14th August 2012 at 03:05 AM.
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Old 14th August 2012, 03:49 AM   #3
Melon Head is offline Melon Head  Australia
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I am excited to see your results
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Old 14th August 2012, 04:27 AM   #4
phivates is offline phivates  United States
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Default big one

Me too. I note the 1 mm xmax and go directly to my ancestry (AR, TL) and hope for the best on the bottom end...could be great! Chances are the 17mm Matsushita Philcos I enjoy so much in my basement have about that much, or little, xmax. Big boxes. Make them kiosks for art, visual that is. Bigger is better they say. And sit in the middle.
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Old 14th August 2012, 11:16 AM   #5
norman bates is offline norman bates  United States
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baffle step ?

maybe a 10 band eq ?


Norman
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Old 14th August 2012, 11:47 AM   #6
Parasonic is offline Parasonic  United States
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Quote:
Originally Posted by Bigun View Post
no supporting woofers or tweeters, nothing other than a wire between the amplifier and the driver.
Sounds like heaven to me........can't wait for your impressions

cheers,
Terry
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Old 14th August 2012, 11:59 AM   #7
Scottmoose is offline Scottmoose  United Kingdom
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Out of interest, what vent dimensions will you be using on the 13.6?
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Old 14th August 2012, 12:19 PM   #8
Melon Head is offline Melon Head  Australia
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Originally Posted by Scottmoose View Post
Out of interest, what vent dimensions will you be using on the 13.6?
That is top secret. Haha
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Old 14th August 2012, 12:43 PM   #9
StevenZ is offline StevenZ  United States
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Old 14th August 2012, 01:15 PM   #10
mondogenerator is offline mondogenerator  England
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not normally my thing, but hatchback size boxes always get attention! Vent dims? Couldnt you reverse eng to guesstimate, scott? Im not sure there are any secrets any longer!
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