I think because the hotter they get they lose some intensity in there magntic field. Also they are extremly powerful, and a magnet the size required for some subs could do some damage if it isn't handled properly....Here's a comparison s Neodymium magnet the size of a golf ball can wipe a credit card or send some metal things flying.

exactly. why have a 90lb ferrite magnet, if you could substitute a 10lb neo?

Because an equivalent neo magnet would make the sub way way way to expensive...

Neodymium is a rare element and cost about a $1 a gram. There are 453.6 grams in 1 pound.

pfft. so? :p

We have a meeting of the minds tomorrow. I will be inspecting the sub and help doing T/S Specs on it.

I know you got this going on you site Ryan but keep us posted here as well. I can't wait to see what it looks like.

:eek:

48 Hz Fs before break in...

We put it on the Dayton Woofer Tester 3 tonight...

:coolio:

Damn that thing is huge. 90 Lbs sub? I really hope you dont have to take it out to reach the spare tire :lol:

Spare tire is under the vehicle.