pretty cool. im still thinking of switching my subs, looks like somemething to consider

 

40.9 watts @ 133.0 dB
141.1 watts @ 137.8 dB
311.3 watts @ 140.7 dB
513.4 watts @ 142.7 dB
811.5 watts @ 144.5 dB
1731.2 watts @ 146.9 dB
2845 watts @ 148.1 dB
4505 watts @ 149.2 dB
7081 watts @ 151.2 dB -- Still gained 2 dB at this point, very little compression


/S Specs for 12" D1 model:

Qts = 0.403
Qms = 6.830
Qes = 0.428
Fs = 43 Hz (fresh without break-in)
VAS = 11.65 L (fresh without break-in)
Le = 1.41 mH (series)
Re = 1.59 ohms
Xmax = 20 mm
BL = 17.58 N/A

 

those are some pretty good numbers, it only requires 141.1 watts to match wat mine can do when wired at 800 watts

 

also its worth mentioning that the box used in testing was not optimized for spl.

testing was done with 4 1500D's strapped.

Oh! and im not postive, but im pretty sure this was done in a concrete reinforced vehicle, if im thinking about the same thread [&:]

 

kind of a low motor force for an SPL oriented sub. The MT is all the way up at 54, which is a number ive yet to see ANY sub come close to. But, on the other hand, that tight coil gap is what makes me hate reconing MT's...