Aurasound NS18-992-4A 18" Subwoofer

Aurasound NS18-992-4A 18" Subwoofer
Click to enlarge

More images

Price: $789.00


Product is out of stock
Manufacturer: Aurasound
Product ID : ns18-992-4a
Weight: 68.00 lbs
Manufacturer: Aurasound
E-mail to a friend | Add To Wish List


Aurasound NS18-992-4A 18" Subwoofer 

The NS18-992-4A is one of the best subwoofers that we know of. The powerful NRT neodymium magnet system provides such a fast and long stroke that you feel like you're listening to a wall of woofers. The bass is tight, accurate and real. The picture and description simply cannot do this driver justice, it is truly incredible!

Recommended Enclosure:

F3 of 35Hz in 4.5 to 6 cubic feet sealed and stuffed for super tight and fast bass. The F6 in this box is 25Hz, so using a plate amplifier like the SpeakerPower SP1-700 with adjustable boost will get you down to 20Hz if you desire. It can effortlessley provide the lowest lows if that is what you are after.


  • Frequency Fo to 1.5kHz
  • Aluminum Cone - black
  • Underhung voice coil
  • NRT neodymium magnet system
  • Inherently shielded
  • Rubber surround


Comment on Facebook

Product Reviews

Login or Register to write a review.
Reviewed by
10/12/2017 - 01:04:51 PM
My experience with Aurasound NS18
I had an old Velodyne ULD 18 powered subwoofer, the amp stopped working after ten years and the surround rotted out, so I ordered a Speaker Power SP1-2400 plate amp, an Aurasound Ns18 driver, and the mini DSP DDRC-24 for the crossover, sub integration, and room correction. Turned out that the 6 cubic foot sealed box of my Velodyne subwoofer was a perfect match in terms of even the screw placement for the Aurasound subwoofer, so I did not need to construct a new cabinet! This subwoofer I thought may have been too powerful and slow to augment the lower end of my Sound Lab A4 electrostatic speakers, but after equalizing everything with the Dirac Live room correction software on the miniDSP DDRC-24, it appears to be a match made in heaven. The digital crossover on the DDRC-24 does not degrade the sound going into my electrostatics as the old electronic crossover on the Velodyne used to do to a minor extent. The dynamics of my electrostatic speakers have been significantly enhanced by the addition of this subwoofer and the lows can be delicate or room shaking depending on the source. Coherence of sound remains intact to my delight despite the switch from delicate electrostatic panel to massive subwoofer structure at 85 hz. I use a 24 db/octave high and low pass digital crossover at this frequency and this seems about right. I love having the high pass crossover in addition to a low pass crossover in the DDRC, as this keeps potentially damaging and distorting powerful low frequency information away from my electrostatics. Too many subwoofer electronics provide only a low pass crossover. The combination of this subwoofer with the miniDSP subwoofer integration software is going to be hard if not impossible to beat!
The Aurasound NS18 is therefore enthusiastically recommended based on my experience!
Reviewed by
07/25/2011 - 01:05:57 PM
Sub story
With the new price reduction Aura NS18 became directly competitive with some prestigious old timers like JBL and Electro-Voice. EV was my first choice, but Aura has way better specs. After reading their "White Paper" I was sold on the technology, so bravely handing over the big bucks for a pair of these 18" Monstros I began a few days of apprehension. Let me tell you, spending this kind of money on a pair of raw speakers can be scarey.
Built a pair of knock down 5.25cuft cabinets from somewhere and lashed the speakers up for a test flight. After careful break-in with various frequencies of sine waves (took ~45min) it was obvious that I had NOT wasted my money. In a sealed box they outperformed a ported 12" competitor I'll call 'Lusitania' by...well, a lot. And yes, I know this is not a fair comparison but it is not meant to be. Lusitanias are primarily home theater speakers. They represent the bass tones in music quite well but they do not provide a lot of definition. Bring the NS18 on stage and a whole world opens up before your ears. I dig classical organ. Some Virgil Fox CDs were unlistenable because he was just making a bunch of racket with the pedals. Now with the Aura subs you can hear melodies, ornamentation, you can hear the silence between the notes, for crying out loud! Another organist, James Johnson was always plain out boring. Now I admire him for his precision and clarity because that is what the NS18s offer, but there is nowhere on the data sheet for that.
Oh, there's more. Bob Dylan "Highway 61 Revisited" has about as much low frequency information as you would expect on a mid-60s recording yet these subs act to bring into focus everything from the midrange down. They are crossed over at 80hz, 48dboct. you will need at least 600w into 4ohms of clean, honest power down to the 20hz neighborhood in order to take advantage of the revealing qualities in these truly 'High Fidelity' loudspeakers.