the above song (bass i love you) is a <40hz song at 21 seconds it drops to lower than 25hz if your not feeling that drop then your LPF is capping it at 80hz (not bass 🙂)
i just listened to the woofer cooker thru my headset lots of 80-140hz action need to test it in the car to see if its worthy of subsonic 🙂
forgot to add i have 5.1 dolby dts in the car hehe makes films great in the car
google -> alpine mra d550
then click shopping and see how much it is 🙂
it took 6 weeks to be made and get shipped from alpine it was the 1st in the UK