AuraSound NS18-992-4A 18" Subwoofer
Here's the writeup on PE:
"Output, fidelity, and extension… Usually you have to sacrifice one in order to improve the other two. The 4 ohm 18" NS18-992-4A from AuraSound is one of the few drivers that can do it all.
AuraSound has designed the NS18-992-4A from the motor up. They started by combining a massive version of the patented Neo-Radial Technology (NRT) motor with an underhung 4" diameter high temperature voice coil to give this driver a particularly long stroke. Then, they mated the coil to an extremely rigid aluminum cone for minimum distortion. For suspension, this driver uses an injection molded rubber surround and dual opposed spiders to keep the cone and voice coil linear up to 3" of peak-to-peak mechanical excursion. To hold it all together AuraSound has developed a cast aluminum frame, which is remarkably solid while allowing maximum airflow for the back side of the cone and ample ventilation to keep the voice coil cool.
For moving excessive amounts of air while maintaining a hi-fidelity sound it will be hard, maybe impossible, to beat the AuraSound NS18-992-4A 18".
I ordered these as part of a Group Buy where some fellas changed their mind and I admittedly jumped the gun on placing the order too soon. The day after I ordered they PM'd and said they couldn't do it right now... So, here we are.
Brand new in box (except for the one I took pictures of).
MSRP is $790/each.
I'm asking $640/each, shipped CONUS. Payment via Paypal.
If you want to pay with paypal gift, I can do $620/each, shipped.
That's about $140 off the current MSRP.
If you can meet in person and pay in cash, I can do $580/each.
PM or email at hardisj(at)gmail(dot)com.