I put one in the JL stealth box. So much better than the JL, and actually better than most all I have heard and I have been into car stereo installs and competitions since 1975. Only 300 watt capacity though on the 10" I had. It finally blew one voice coil after about two years running 800 watt RMS, US AMPS 400. I am going to get another one. They do sound good. More than just a vibration or monotone, Actual bass music, accurate and pleasant sound.