I agree completely... LOL!.. in 1997 I put a pair of 95 db efficient 15 d2 Strokers on a pair of Audio Art 100 HC's... it got low and loud... even at events I went lower and louder than most other competitors... heck, after box rise I probably was only getting 700-800 watts to each... and tuning to 36 hz was LOW back then... today 32 hz seems normal to most and 1500-2000 watts is nothing financially when buying... those newer subs seem to be going to a lower efficiency/higher power handling... some have efficiency as well I'm sure... but it's 1997 again for that!... I paid $512 each in 1997 for mine... to get all 3 in your Iron law... it's gonna cost you...