Looking for help understanding Klipsch’s RW-10D subwoofer’s amplifier power and frequency response. The specifications read as: “FTC Rated Power: 260 watts continuous @ <2% THD / Dynamic Power*: 575 watts”. Does this mean the subwoofer is 260 watts or 575 watts? Does "28-120Hz +/-3dB" mean how “deep” and “high” the bass will sound? Thanks for the help!