I actually did a power test and was able to pull 3600 watts out of the 7k2e with my electrical sysytem (DC Power 300 amp alt, 1/0 Knukoncepts wire throughout, 1 Kinetik 2400 & 1 Kinetik 1400 batts). Ive never done any kind of personal Sub comparisons so I cant say if SMD subs meter better or worse than other brands.
The 3600 watts was pulled on a burp that lasted about 5 seconds, so daily I was probably getting far less than that. The SMD took my daily beatings like a champ. As soon as I get more cash im getting twins!!!