Tall Roll Foam Surround
Double Pressed Composite Paper cone
Rubber Wrap around Gasket
Progressive spider with ABS supporting rings
Air Force Cooling Technology
Woven Tinsel Leads
12 Spoke Cast Aluminum Basket
12 Spoke Cast Aluminum Heat Sink Magnet cover
70mm peak to peak suspension
Dual 3" voice coil on aluminum former
Extended Pole piece for Extreme X-Max
180 Oz. Double stack Motor
Dual 3" Voice coil
400 watts minimum power
1000 watts rms
3000 watts peak power
6000 watts for 5 second tone burst
70 mm peak to peak suspension
Dual 2
fs: 35
QMS: 7.36
Qes: 0.365
Qts: 0.348
Vas (L): 35
SPL (db) 87
thats straight from the manual