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In the Forum: Audio Discussions
In the Thread: Exceptional loudspeakers drivers
Post Subject: A good driver is a fragile driver…Posted by Romy the Cat on: 4/8/2007
Jessie, I do not know why I stuck with the Aura NRT18-8. The Aura NRT18-8 and Aura 1808 are very deferens drivers and I do not think I even mentioned the NRT18-8 as something that worth attention, and particularly in the “Exceptional Drivers” thread. The 1808 was papers driver. I do not know what grade of cellulose they use but it was as “paper” as it could be when you touch it. The cone was stiff, light and beautiful… however Aura had a low of problem with it. The Aura users were pro folks why ran Aura 1808 with 1000W Clowns and Crests at open air installations. Do not forget that Aura 1808 was 98dB sensitive driver and it had tremendous motor force. So, with those monster amps the motor obliterated the driver, yanking the coil of if cone of breaking the out suspension apart. In response Aura made the NRT18-8 where they socked the cone with epoxy, making it stronger. I never heard the NRT18-8. I generally hate any epoxy on cones and consider that it was very bad for sound. I have touched the NRT18-8 driver though with my hands and remember that it had completely different feel then Aura 1808 it felt more “plasticy” then paper. I did not research what else was done different in NRT18-8 as at the time when Aura begun to make their NRT series motors (NRT comes from the Neo-Radial Technology) they were already different company with very different objectives. Anyhow, it do not overload the Aura 1808 with powers (that never happens in listening rooms) then it fragility was not a big deal. In fact the more fragile driver is the better it is for sound…
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