This SPL orientated sub seems to get VERY loud. Its rated at 800rms, but without a doubt screams for more then that. FOREMAN on here can attest to that. I started with 1000rms and she loved it and seemed to ask for more so I let her loose with roughly 1500rms and that seems to be ideal. Again if your looking for a solid distinct HARD HITTING woofer for the cash take a look at these babies. Hands down it has to be one of the most well built woofers for its price range.