178 volts / 9.5 amps clamped peak... 9.4 ohms per amp calculated... 1691 watts.
Can't get any more juice than that at 50 Hz in my SPL box. The woofer was NOT showing any signs of mechanical strain @ the 50 Hz burp frequency in this box -- the sub has more in it and, for that matter, should probably be in a smaller box as this is my 15" woofer SPL box So I am very pleased with it.
145.2 dB score in the SPL box.
I kept playing it for a while at the same level... probably a few minutes. Still no issues with the sub.